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FM

Frequency modulation (FM) is a method of impressing onto a high-frequency carrier signal by varying the instantaneous frequency of the carrier while keeping its constant, enabling efficient transmission of audio, , or other with inherent resistance to and interference. Developed by American electrical engineer in 1933 as wide-band FM, the technique addressed limitations of (AM) by providing clearer reception through narrower efficiency and better immunity to atmospheric disturbances, marking a pivotal advance in radio technology. Commercial emerged during the late 1930s, initially allocated to the 42–50 MHz band before regulatory shifts to the current 88–108 MHz VHF in to avoid and accommodate growth. Its defining characteristics include superior audio fidelity for music and voice—often described as "hi-fi" due to reduced —and applications extending beyond to two-way radios, , and early communications, though Armstrong faced protracted patent disputes with rivals like that delayed widespread adoption and contributed to his personal and financial ruin.

Frequency modulation

Principles of operation

(FM) encodes information onto a by varying its instantaneous in proportion to the instantaneous of the modulating signal, while maintaining constant carrier . This contrasts with (AM), where the carrier varies with the modulating signal and the frequency remains constant. The modulating signal m(t), typically with zero mean and bandwidth f_m, causes the carrier frequency f_c to deviate by a maximum amount \Delta f, yielding the modulated signal s(t) = A_c \cos\left(2\pi f_c t + 2\pi k_f \int_{-\infty}^t m(\tau) \, d\tau \right), where k_f is the frequency deviation constant in Hz per volt and A_c is the constant . FM relates to (PM) through , as instantaneous equals the time of phase; thus, FM implements PM on the integral of m(t), with \beta = \Delta f / f_m. For narrowband FM (\beta \ll 1), the approximates AM with sidebands at f_c \pm f_m, but wideband FM (\beta \gg 1) produces multiple sidebands governed by of the first kind, J_n(\beta), extending the . approximates the containing 98% of the signal as B \approx 2(\Delta f + f_m), derived from the significant sideband extent where |n| \leq \beta + 1, ensuring efficient spectrum use while bounding deviation for given . Empirically, FM's constant envelope confers noise immunity, as additive noise primarily perturbs rather than frequency; receivers employ limiters to clip fluctuations before frequency discrimination, preserving signal fidelity against that dominates in . This causal separation—frequency encoding decoupled from —yields a improvement of approximately $3\beta over AM for high \beta, verified in threshold-limited conditions where affects jitter but not overall carrier power.

Historical development

Edwin Howard Armstrong developed wideband (FM) as a means to transmit radio signals with significantly reduced static and noise compared to (AM), which suffered from susceptibility to atmospheric interference and man-made electrical disturbances. Armstrong filed patents for FM between 1930 and 1933, receiving U.S. Patent 1,941,182 on December 26, 1933, for a modulation system that varied carrier frequency over a wide to achieve higher fidelity and reliability. He publicly demonstrated FM's superiority in 1935 at the in , broadcasting clear signals from , over 30 miles away, even during thunderstorms that disrupted AM reception. The U.S. (FCC) initially allocated the 42–50 MHz band for experimental in 1939, enabling the launch of the first commercial FM station, W2XDA (later KEH), in on July 18, 1939. Commercial operations began January 1, 1941, in this band, but concerns over interference with planned television services prompted the FCC to reallocate FM to 88–108 MHz on June 27, 1945, requiring stations to transition and effectively delaying widespread adoption until after . Postwar commercialization faced resistance from AM broadcasters and manufacturers like , whose leader prioritized AM and television; RCA licensed Armstrong's patents without royalties initially but later contested their validity in court, draining Armstrong's resources through prolonged litigation. Amid these battles, which centered on FM's empirical advantages in signal quality, Armstrong died by suicide on January 31, 1954, after jumping from his New York apartment window, leaving his wife to continue the legal fights that eventually affirmed his patents' value. FM adoption accelerated in the U.S. during the as receiver sales grew, with the FCC approving a compatible stereo multiplexing standard on April 20, 1961, allowing simultaneous mono and stereo transmission to ensure backward compatibility with existing monaural sets. The first FM stereo broadcast occurred on June 1, 1961, via WGFM in , spurring equipment upgrades and station conversions. Globally, lagged due to postwar reconstruction and regulatory conservatism; initiated FM services in the late 1940s, but widespread rollout followed the 1948 Copenhagen Wavelength Plan, with many countries standardizing the 87.5–108 MHz band only in the and amid debates over spectrum efficiency versus AM infrastructure. By the , FM dominated music broadcasting worldwide for its audio fidelity, though initial delays in regions like stemmed from entrenched AM networks and slower regulatory shifts.

Applications in radio broadcasting

Frequency modulation (FM) serves as the primary modulation technique for commercial in the VHF band, enabling high-fidelity audio transmission with reduced susceptibility to noise compared to (AM). In the United States, the FM broadcast band spans 88 to 108 MHz, divided into 100 channels with 200 kHz spacing to accommodate wideband signals supporting audio frequencies up to 15 kHz. Typical peak frequency deviation is ±75 kHz, which allows for a modulation index that captures the full dynamic range of music and speech while fitting within allocated channel bandwidths. FM stereo broadcasting employs a compatible multiplexing scheme to transmit left and right audio channels. A 19 kHz pilot tone signals the presence of stereo information to receivers, while the difference signal (L-R) modulates a suppressed 38 kHz subcarrier, the second of the pilot, ensuring phase-locked and with mono receivers that ignore subcarrier components. This system extends the to approximately 53 kHz, preserving spatial audio cues essential for reproduction. Additionally, the (RDS), standardized in Europe by 1984 and adopted globally, overlays a 57 kHz subcarrier to transmit station identification, program type, and traffic data without audibly degrading the main audio. The superior noise rejection and of FM have causally driven its predominance in music-oriented , particularly since the when stations leveraged its fidelity for album-oriented formats, contrasting with AM's narrower suited to talk and . In non-digital markets, FM remains dominant, with over 3.2 billion global listeners projected by 2025, many in regions where terrestrial FM constitutes the main audio platform for music consumption ahead of streaming. In the U.S., AM/FM radio captures 69% of ad-supported audio time, underscoring FM's role in delivering high-quality music to vehicles and homes where digital alternatives are limited.

Technical advantages and comparisons

(FM) demonstrates superior rejection compared to (AM) primarily because information is encoded in frequency deviations rather than variations, allowing FM receivers to employ limiters that suppress -based and interference. This results in a (SNR) improvement of approximately 20–30 over AM in practical broadcast scenarios, with FM achieving effective SNR levels exceeding 60 dB under good conditions due to the suppression inherent in FM (via Carson's rule, where SNR gain scales with the squared). In mobile reception, FM benefits from the , where a stronger direct signal overrides weaker multipath or components, providing greater immunity to than AM, which suffers proportional degradation. Compared to AM, FM's wider bandwidth allocation—standard 200 kHz per channel in VHF broadcasting—enables higher audio fidelity for music and speech, accommodating frequency responses up to 15 kHz with stereo multiplexing, whereas AM's narrowband 10 kHz channels limit high-frequency content and dynamic range, rendering it inefficient for high-quality audio. Against digital alternatives like Digital Audio Broadcasting (DAB), FM's analog simplicity avoids encoding/decoding delays (typically <1 ms latency versus DAB's 50–150 ms processing lag), preserving real-time synchronization for live events, though it consumes more spectrum per service (200 kHz/channel versus DAB's multiplexing of 8–12 channels in a 1.5 MHz ensemble via compression). DAB offers greater spectrum efficiency and robustness to low SNR via error correction, but FM provides artifact-free high-fidelity reproduction without digital compression losses, achieving coverage reliability in line-of-sight VHF propagation comparable to DAB in urban tests per ITU field evaluations. Despite these strengths, FM remains susceptible to multipath distortion in environments with reflections (e.g., urban or mountainous areas), where phase differences between direct and reflected signals cause frequency shifts and audible "picket fencing" noise, a vulnerability less pronounced in AM's lower frequencies or digital systems' equalization. Overall, FM's empirical advantages in SNR and fidelity stem from its frequency-domain encoding, enabling hi-fi broadcasting without digital intermediaries, though at the cost of higher bandwidth demands relative to compressed digital formats.

Criticisms and limitations

FM radio's wider bandwidth requirements, typically 200-300 kHz per channel compared to AM's 10 kHz, contribute to spectrum inefficiency by crowding the VHF band and limiting the number of available stations in a given area. This allocation traces to the FCC's 1941 decision to assign FM to 88-108 MHz, a shift critics argue inefficiently favored established AM incumbents and overlooked long-term capacity constraints, as subsequent rigid licensing perpetuated underutilization. Audio quality in FM broadcasting has degraded due to aggressive dynamic range compression in processing chains, a phenomenon exacerbated by the "loudness wars" where stations prioritize perceived volume over fidelity, often reducing effective dynamic range to 7-9 dB in modern transmissions versus FM's original hi-fi potential. The 1996 Telecommunications Act accelerated corporate consolidation, enabling entities like Clear Channel to acquire thousands of stations, which homogenized playlists and diminished format diversity—local independent stations dropped from over 10,000 pre-1996 owners to a handful of conglomerates controlling 90% of the market by 2000, eroding the eclectic programming of FM's early decades. The Fairness Doctrine, enforced from 1949 to 1987, required broadcasters including FM stations to present balanced viewpoints on controversial issues, which detractors contend suppressed innovation and commercial speech by imposing regulatory burdens that chilled risk-taking formats and editorial freedom. Its repeal correlated with audience expansion—U.S. radio listenership rose from 95% weekly reach in 1987 to peaks near 92% by the early 2000s—undermining claims that deregulation induced informational chaos. FM signals remain vulnerable to multipath interference in urban environments, where reflections from buildings cause rapid fading and distortion up to 30 dB, degrading stereo reception and audio clarity without the error correction available in digital alternatives. Compared to streaming services, FM avoids data caps and bandwidth throttling but faces unmitigated over-the-air disruptions, while critiques of streaming often overlook FM's resilience to internet piracy and dependency on cellular infrastructure.

Recent developments and future prospects

In the 2000s, iBiquity Digital Corporation developed , which overlays digital signals on analog FM carriers using orthogonal frequency-division multiplexing (OFDM) sidebands to enable higher audio quality, error correction, and multicasting of additional channels without interfering with the primary analog signal. Empirical tests have demonstrated 's superior signal-to-noise ratio (SNR) in multipath environments compared to pure analog FM, with digital sidebands providing up to 20 dB improvement in audio fidelity under noisy conditions. By 2024, approximately 21% of U.S. commercial FM stations broadcast in HD, and over 70% of new vehicles in North America include receivers, though overall listener penetration remains limited due to legacy receiver prevalence and incremental upgrade costs. Beyond broadcasting, frequency modulation techniques have advanced in non-communication domains, such as power grid stability amid rising renewable energy integration. Recent 2024-2025 studies propose FM-based control strategies for inverter-dominated grids, where rapid frequency adjustments via modulated power outputs from wind and solar inverters mitigate nadir and steady-state deviations, outperforming traditional droop control in high-penetration scenarios (e.g., >50% renewables). In communications, FM-OFDM hybrids are under proposal for enhancements and , combining FM's robustness to Doppler shifts with OFDM's to support high-mobility applications like vehicular networks, potentially reducing emissions by 10-15 in dynamic channels. FM's future prospects emphasize hybrid over obsolescence, bolstered by its empirical in crises; during the 2023 Maui wildfires, FM stations sustained broadcasts when cellular and failed, serving as primary sources for evacuations and updates. U.S. listening data from Edison Research indicates AM/FM radio commands 67-71% of daily ad-supported audio time as of , with 89% occurring via traditional tuners, underscoring sustained demand despite digital alternatives. In , FM's low-complexity modulation suits battery-constrained sensors, with Gaussian FM shift keying (GFSK) variants enabling sub-GHz transmissions at microwatt power levels for extended lifetimes in remote monitoring. These trends suggest FM's evolution toward augmented roles in resilient, efficient systems rather than wholesale replacement by digital natives.

Other scientific and technical uses

In physics and chemistry

(Fm) is a synthetic in the series with 100. It was discovered in late 1952 through the chemical analysis of radioactive debris from the thermonuclear test, the first full-scale hydrogen bomb detonation conducted by the at on November 1, 1952. The element's identification was confirmed in subsequent laboratory syntheses via particle accelerators in 1953–1955, distinguishing it from lighter actinides through ion-exchange and its characteristic signatures. Named after , fermium has no stable isotopes; all are radioactive and produced artificially, with the longest-lived being ^{257}Fm, which has a of approximately 101 days, facilitating limited studies of its chemical behavior resembling other actinides. Fermium's production and decay properties have been leveraged in nuclear research to probe fission barriers, shell effects in heavy nuclei, and deformation in isotopes like ^{252}Fm, which exhibits prolate deformation influencing its charge radii trends. In particle and nuclear physics, fm designates the femtometer (also called fermi), an SI unit of length equivalent to 10^{-15} meters, adopted for quantifying subatomic scales such as nuclear diameters and radii. This prefix derives from the Latin femto-, meaning one quadrillionth, and aligns with the approximate size of protons, neutrons, and atomic nuclei, which span 1–10 fm. For example, precision measurements of the proton's charge radius using muonic hydrogen—where a muon orbits the nucleus—yielded a value of about 0.84 fm in 2018, highlighting discrepancies with electron-based methods and prompting reevaluations of quantum electrodynamic corrections in hadronic structure. Such fm-scale data underpin models of nuclear forces and matter under extreme densities, distinct from larger angstrom-scale atomic dimensions.

In computing and engineering

The FORTRAN Monitor System (FMS), introduced in the late for the computer, served as an early tape-based operating system primarily designed to automate of FORTRAN programs, enabling efficient job sequencing, management, and in pre-operating system environments. Developed by and adapted by , FMS facilitated the transition from manual to automated workflows on systems like the IBM 7090 and 7094, handling card-to-tape conversion and multiprogramming precursors that improved throughput for scientific computations without full multitasking capabilities. Its causal role in enhancing computational efficiency stemmed from minimizing operator intervention, influencing subsequent IBM systems like IBSYS until the rise of more comprehensive OSes in the . In engineering, Factory Mutual (FM), established in 1835 as a mutual insurance organization, developed proprietary standards for loss prevention, particularly , that have shaped and equipment worldwide. FM Global's data sheets and approval processes, such as FM Approvals testing for product resilience against fire, electrical failure, and mechanical hazards, mandate rigorous performance criteria—e.g., noncombustible materials and suppression system efficacy—to mitigate property risks in facilities like manufacturing plants and data centers. These standards, informed by empirical testing rather than regulatory mandates alone, have influenced practices by prioritizing quantifiable hazard reduction, with FM-certified components often required for insurance eligibility and demonstrating lower loss ratios in insured properties. Software-defined radio (SDR) frameworks like incorporate (FM) modules for simulating and prototyping communication systems, allowing engineers to model modulation schemes without hardware dependencies. Tools such as the WBFM Transmit and Receive blocks enable or wideband FM simulations, processing audio inputs into modulated signals for analysis of deviation, , and fidelity in virtual environments. This approach supports rapid iteration in engineering design, bridging theoretical with practical SDR implementations on platforms like RTL-SDR, while emphasizing empirical validation through spectrum analysis.

In medicine and biology

(FMF) is an autosomal recessive autoinflammatory disorder predominantly affecting individuals of Mediterranean ancestry, marked by recurrent, self-limited episodes of fever and causing abdominal, thoracic, or articular inflammation. Attacks typically onset in childhood, last 12–72 hours, and include symptoms such as , pleuritis, , and erysipelas-like skin lesions, with inter-attack periods free of symptoms. The disease arises from mutations in the gene on 16q13, encoding the pyrin protein that regulates activation and interleukin-1β production. Pathogenic variants, including the homozygous or compound heterozygous M694V mutation, are highly penetrant and prevalent in groups like (carrier rate up to 1:5), Armenians, Arabs, and Turks, with disease prevalence reaching 1:200–1:1000 in high-risk populations such as in . Diagnosis combines clinical presentation, family history, and exclusion of infections or malignancies, with confirmation via genetic sequencing identifying biallelic mutations in over 90% of cases; amyloidosis risk underscores early prophylaxis, which prevents attacks in 60–95% of patients and halts deposition. In biological contexts, (FM) models neural signaling dynamics, where input variations alter synaptic transmission efficacy and circuit output, as seen in frequency-dependent presynaptic modulation that enhances or depresses signal propagation in sensory neurons. Such mechanisms underpin auditory processing, with neural encoders simulating FM detection through predictive sweep-spectral interactions, mirroring physiological responses to rapid frequency changes up to 20 Hz. In pathological states like , spontaneous FM of subthalamic beta-band oscillations (13–30 Hz) correlates with motor symptoms, informing adaptive paradigms that target frequency-specific .

Entertainment and media

Film and television

FM is a 1978 American comedy-drama directed by , starring as the program director of a FM radio station facing tensions between free-form programming and corporate demands for advertising, including army recruitment spots. The plot centers on disc jockeys' rebellion against management, culminating in a live broadcast featuring artists like and to protest the changes. Released on April 20, 1978, by , the film received mixed reviews, with a 20% approval rating from critics, though its sold over one million copies and reached platinum certification. In television, refers to a 1989–1990 sitcom on , created by , depicting a newly father managing a public FM radio station amid personal and professional challenges, including interactions with staff and family. The series aired 13 episodes from August 17, 1989, to June 29, 1990, but was not renewed for a second season due to low ratings. A separate British sitcom titled , airing on in 2009, followed two disc jockeys and a at the fictional Skin 86.5 FM station, exploring their on-air personas versus off-air lives, with episodes incorporating real music performances.

Literature

Flora Macdonald Mayor (1872–1932), writing as F. M. Mayor, was an English whose works explored themes of quiet domestic and unfulfilled lives in early 20th-century . Her novel The Rector's Daughter (1924) centers on Mary Jocelyn, the devoted daughter of a rural clergyman, whose emotional restraint leads to isolation and disappointment in love. Another work, The Room Opposite (1935, published posthumously), follows a boarding-house resident entangled in a murder mystery, highlighting Mayor's interest in psychological tension within ordinary settings. In , appears as a narrative device in Haruki Murakami's 1Q84 (serialized 2009–2010). Protagonist Aomame, a instructor and assassin, tunes into an FM radio broadcast of Janáček's Sinfonietta that reveals discrepancies signaling an with two moons, underscoring themes of parallel worlds and auditory cues to metaphysical shifts. Scholarly literary analysis has examined FM radio's cultural impact on postwar poetry. Lisa Hollenbach's Poetry FM: Postwar Poets and the Radio Interest (2023) details how listener-sponsored FM stations like Pacifica Radio, founded in 1946, fostered experimental oral performances and influenced poets such as and by emphasizing performative broadcasting over commercial formats. This intersection reflects FM's role in democratizing literary expression amid mid-20th-century technological shifts.

Music and artists

In the 1970s and 1980s, radio became synonymous with , a format emphasizing deep album cuts over singles, which allowed stations to curate playlists featuring extended tracks and uncensored content from rock artists like Led Zeppelin and . Pioneering stations such as KMET in , which transitioned to freeform in 1968 under Tom Donahue, exemplified this shift by prioritizing artistic integrity over commercial top-40 constraints, achieving peak listenership in 1980 as the second-most popular station in the market. This format's dominance stemmed from FM's superior audio fidelity, enabling the broadcast of complex rock productions that AM could not handle, thereby influencing record labels to produce album-centric releases tailored for FM airplay. Canadian band FM, formed in in 1976 by keyboardist Cameron Hawkins and guitarist , drew its name from and released key albums including Black Noise (1977), noted for sci-fi themes and synthesizer-driven soundscapes, and Direct to Disc (1978), a live direct-to-disc recording emphasizing analog warmth. The group's discography, spanning until 1990, blended and AOR elements, with tracks like "Phantasmagoria" showcasing intricate instrumentation that aligned with FM radio's appetite for fare. Their work reflected the era's fusion of experimentation and , though commercial success remained niche due to competition from mainstream acts. FM synthesis, patented by John Chowning in 1973 and licensed to , transformed electronic music production with the 1983 release of the DX7 , which used to emulate for generating metallic, bell-like tones unattainable via subtractive synthesis. Over 160,000 DX7 units sold by 1986, powering hits like Jan Hammer's * and influencing artists from Kraftwerk to pop producers, as its efficient digital algorithms enabled complex timbres that defined 1980s and . This technology's causal impact lay in democratizing advanced , shifting composition from analog oscillators to programmable operators, though its steep learning curve initially limited accessibility.

Sports and games

is a series of management simulation video games developed by , a studio founded in 1994 by brothers and Collyer, and published by since 2004. The abbreviation FM commonly refers to this franchise in gaming contexts, where players assume the role of a club manager, overseeing team selection, tactical setups, player scouting, transfers, finances, and media interactions across licensed leagues worldwide. Annual releases, such as 2024 launched on November 8, 2023, feature a proprietary match engine that simulates games based on player attributes, formations, and real-time decision-making, drawing from extensive proprietary databases compiled by over 1,400 scouts globally. This data-driven approach has enabled the series to model real-world football dynamics empirically, with tactics like high-pressing systems or possession-based play yielding outcomes correlated to professional matches, as validated by partnerships with leagues including the English and . The franchise originated from the Championship Manager series, which Sports Interactive co-developed starting with its debut in 1992 on , but rebranded to after a 2003 split with former publishers over editorial control, leading to the independent release of on October 4, 2005, for PC and Mac. Subsequent iterations have incorporated advancements like 3D match visuals introduced in 2011 and, more recently, the engine in 2024 for enhanced animations and player interactions, reflecting causal factors such as , , and risks derived from statistical modeling. The series' stems from its emphasis on first-principles simulation of football's probabilistic elements—e.g., pass completion rates tied to player technical stats and opposition pressure—rather than scripted narratives, allowing emergent strategies that mirror professional successes, such as data-informed recruitment akin to analytics used by clubs like under . Beyond , FM denotes "" in canine agility , a title awarded to dogs achieving a set number of relay points in flyball competitions governed by organizations like the North American Flyball League, emphasizing speed and handler-dog synchronization in a format involving hurdles, box turns, and ball retrieval. This usage remains niche compared to the pervasive gaming application, with no significant FM modes identified in major racing simulations or other esports titles.

Organizations, titles, and places

Military and governmental titles

Field Marshal (abbreviated FM) denotes the highest commissioned rank in the army hierarchies of several nations, functioning as a five-star grade senior to four-star general and typically reserved for wartime commanders or honorary awards to distinguished officers. Established in the in 1736, the rank symbolizes supreme field command authority and has been conferred on figures such as for leadership in operations. It persists in active or ceremonial capacity in countries including the , —where it remains the apex rank—and , where it serves as an honorary distinction awarded for exceptional service, as in the case of promotions recognizing contributions in conflicts up to 2025. In contrast, the rank was never adopted in the United States military, which instead created the parallel five-star in 1944 to equate seniority without invoking European monarchical traditions associated with "marshal" titles. Post-colonial militaries inherited the structure from precedents but varied in retention; for instance, India's armed forces maintain FM as attainable for lifetime appointment, reflecting continuity in hierarchical precedence despite independence in 1947. Foreign Minister (abbreviated ) is the governmental title for the executive official heading a country's foreign affairs , responsible for formulating and executing diplomatic policy, negotiating treaties, and managing relations with other states. This role, common in cabinet systems worldwide, involves causal influence on engagements independent of domestic partisan pressures, with the minister typically reporting to the or . The abbreviation appears in official diplomatic glossaries, underscoring its standard use in intergovernmental .

Businesses and organizations

FM, formerly known as FM Global, is a mutual insurance company specializing in commercial property insurance and engineering consultancy, founded on August 1, 1835, by Zachariah Allen and other Rhode Island textile mill owners to provide mutual fire insurance through loss prevention rather than mere indemnification. The firm pioneered engineering standards based on empirical data from fire incidents among its policyholders, developing protocols that reduced property losses and influenced broader industry practices, such as sprinkler systems and building codes. By 1900, it had expanded beyond mills to insure diverse manufacturing risks, amassing a research-driven approach that prioritizes causal factors in hazards like fire, wind, and machinery failure. Headquartered in , FM employs over 5,600 people globally and maintains research facilities, including a 1,600-acre testing ground in West Glocester, Rhode Island, where full-scale simulations validate loss prevention technologies using data from its insured portfolio exceeding $900 billion in property value. The company's model relies on policyholder dividends from avoided losses, with no external shareholders, enabling reinvestment in engineering services that have historically lowered claim ratios compared to standard market insurers. In July 2024, the company rebranded to simply , streamlining its identity to emphasize core services amid global operations in over 130 countries, while retaining its mutual structure established in 1835. This evolution underscores 's focus on data-informed standards, such as FM Approvals certifications, which third-party test products for compliance with empirical risk models derived from decades of loss data analysis. Beyond insurance, FM denotes financial management entities, such as boutique advisory firms specializing in corporate treasury and investment strategy, though these lack the centralized historical prominence of the insurance pioneer; for instance, various regional FM-branded consultancies handle fiscal planning but operate without unified empirical frameworks akin to property risk engineering. Stock tickers like FM for exchange-traded funds, such as the iShares MSCI Frontier and Select EM ETF launched in 2012, represent investment vehicles rather than operating businesses, tracking emerging market equities without direct ties to foundational FM methodologies.

Geographical locations

The , designated by the code FM, is a Pacific island nation spanning approximately 700 islands and atolls across four states—Yap, Chuuk, , and —in the western archipelago, with a total land area of about 271 square miles (702 square kilometers) dispersed over 1.3 million square miles (3.4 million square kilometers) of ocean. The country attained sovereignty in 1986 through the with the , which provides for defense responsibilities by the U.S. in exchange for economic assistance and strategic denial of the islands to adversaries. As of 2022, its population stood at 114,000, concentrated primarily in coastal areas with high population densities on main islands like (over 36,000 residents) and Chuuk (over 48,000); the economy remains heavily dependent on U.S. aid, totaling over $130 million annually in direct assistance as of recent years, alongside limited , , and sectors. In the United States, particularly , Farm to Market Roads () form a designated system of secondary highways intended to link rural agricultural areas to major markets and transportation routes, with the first such road constructed in 1936 between Mount Enterprise and in County to facilitate farm product transport. The network, numbering over 4,000 miles across more than 100 routes (e.g., 1960 near spanning 35 miles through suburban and formerly rural zones), uses black-and-white "FM" signage and has evolved since its inception under state legislation to include urban extensions, though originally focused on unpaved rural connectors upgraded to all-weather standards by the . These roads, managed by the , continue to serve mixed rural-urban functions, with some redesignated as Urban Roads in densely populated counties to reflect changed while retaining FM numbering.

People and fictional characters

Real individuals

FM-2030 (October 15, 1930 – July 8, 2000), born Fereidoun M. Esfandiary in , , to an Iranian father, was a philosopher, author, and advocate for . He adopted the name in the to symbolize his expectation of living until at least age 100 by the year 2030 through technological advancements and lifestyle choices, including , , and optimism about . His writings, such as Are You a Transhuman? (1989), emphasized uploading , , and space migration as paths to transcend biological limits, influencing early transhumanist thought. Upon his death from in , arranged for at the , becoming one of the first public figures to pursue this preservation method empirically tied to revival hopes via future . Francis Marion (c. 1732 – February 27, 1795), born in St. John's Parish, , was an American military leader during the , renowned for pioneering tactics against forces. After initial conventional service, including the 1759 Cherokee expedition and early war battles like Sullivan's Island in 1776, Marion formed irregular partisan units in 1780 following the fall of , using mobility, ambushes, and terrain knowledge in swamps to harass superior armies. His operations, such as the 1781 Battle of Black Mingo and rescue of American prisoners at , disrupted supply lines and boosted patriot morale, contributing causally to strategic retreats in the South; contemporaries like called him the "Swamp Fox" for his elusiveness. Post-war, Marion served in the until health decline led to his death at Belle Isle Plantation. Ferdinand Magellan (c. 1480 – April 27, 1521), a Portuguese navigator born in , organized the 1519 Spanish expedition that achieved the first circumnavigation of the Earth, though he died midway. Commissioned by King Charles I after Portuguese rejection, Magellan sailed from with five ships and 270 men, navigating the in late 1520 to enter the Pacific—previously unknown to Europeans—demonstrating its vast scale and disproving a small assumption. His fleet endured starvation and mutinies but reached the in 1521, where Magellan intervened in local conflicts and was killed in the ; survivor completed the voyage to in 1522 with one ship, verifying Earth's sphericity and global maritime connectivity via empirical logs of 60,440 km traveled. The expedition mapped new trade routes, cataloged Pacific winds, and yielded spices worth far exceeding costs, spurring European expansion despite 80% crew loss to , combat, and desertion.

Fictional characters

, the protagonist of the television series (1993–2018), is frequently referenced by the initials F.M. derived from his first name Fox and surname Mulder. A , Mulder investigates unexplained phenomena, including activity and government conspiracies, driven by the disappearance of his sister in 1973. In the Mega Man Star Force video game series (2006–2008), FM-ians represent a class of fictional electromagnetic beings originating from Planet FM, antagonists who invade Earth via radio waves and possess human hosts to amplify their powers. Notable examples include Gemini, an FM-ian based on the Gemini constellation who partners with human Patrick Sprigs, and Ophiuca, a serpentine entity allied with criminal organizations. These characters embody themes of digital invasion and interstellar conflict within the franchise's near-future setting. FM-AD, a minor robotic character appearing in the Pixar film WALL-E (2008), designates a food management and distribution unit among the automated systems on the human spaceship Axiom.

References

  1. [1]
    Frequency Modulation - GeeksforGeeks
    Jul 23, 2025 · Frequency modulation or FM is a method of encoding information on one carrier wave by changing the wave carrier frequency.
  2. [2]
    Frequency Modulation (FM): Basics and Applications - IB-Lenhardt
    Apr 24, 2025 · FM varies carrier frequency with signal amplitude. Offers noise resistance and is used in radio, wireless mics, and telemetry.
  3. [3]
    Edwin Howard Armstrong - National Inventors Hall of Fame®
    Oct 16, 2025 · His crowning achievement (1933) was the invention of wide-band frequency modulation, now known as FM radio. Independently wealthy on royalties ...
  4. [4]
    Radio History: The Evolution of FM Radio - Mini-Circuits Blog
    May 18, 2023 · The concept of FM radio was first conceived by American electrical engineer, Edwin Armstrong in the early 20th century. Armstrong had already ...
  5. [5]
    FM Radio Stations, 1936 to 1947
    Oct 11, 2024 · The first decade of FM broadcasting, starting in 1936 to 1946, occurred in the 42 - 50 MHz band. The frequency band was changed to the ...
  6. [6]
    FM Radio - Federal Communications Commission
    FM is short for frequency modulation, which refers to the means of encoding the audio signal on the carrier frequency.
  7. [7]
    Celebrating American Innovation: Edwin Armstrong
    Nov 20, 2023 · C4IP is recognizing Edwin Armstrong, whose invention of the frequency modulation (FM) radio system revolutionized modern communication.
  8. [8]
    Frequency Modulation - an overview | ScienceDirect Topics
    In frequency modulation, the frequency rather than the amplitude of the carrier wave is made to vary in proportion to the varying amplitude of the modulating ...
  9. [9]
    Frequency Modulation Fundamentals - Mini-Circuits Blog
    Mar 5, 2024 · For more than 50 years, its basic principle of operation has remained intact, with little to no significant change.
  10. [10]
    [PDF] Lecture 9: Angle Modulation Part 2
    Oct 18, 2021 · Carson's Rule for the FM bandwidth is then BFM = 2∆f + 2B where BFM is the total signal bandwidth (not the half bandwidth). Spectral analysis ...
  11. [11]
    CARSON'S RULE Calculating FM Modulation Bandwidth
    Jan 22, 2008 · Carson's Rule calculates FM bandwidth using: BANDWIDTH = 2 X (PEAK DEVIATION + HIGHEST MODULATING FREQUENCY). It considers the highest audio  ...
  12. [12]
    Frequency Modulation
    FM systems are inherently immune to random noise. In order for the noise to interfere, it would have to modulate the frequency somehow. But the noise is ...Missing: explanation | Show results with:explanation
  13. [13]
    Edwin Armstrong Invents Frequency Modulation (FM Radio)
    Armstrong received a patent on wideband FM on December 26, 1933. "Armstrong conducted the first large scale field tests of his FM radio technology on the ...
  14. [14]
    https://www.famousdaily.com/history/fm-radio-patented.html
  15. [15]
    The Tragic Birth of FM Radio - Damn Interesting
    Aug 10, 2006 · RCA's greater financial resources crushed Armstrong's legal defences, and he was left penniless, alone, and distraught. Edwin Armstrong (1890- ...Missing: commercialization | Show results with:commercialization
  16. [16]
    History of Commercial Radio | Federal Communications Commission
    The following timeline highlights major milestones and historic events in commercial radio's 100+ year history from 1920 to the present.<|separator|>
  17. [17]
    The Complete History of FM Radio - Crunch Reviews
    Mar 25, 2025 · FM Radio in Europe. After World War II, FM radio broadcasting was introduced to Germany. In 1948, a new wavelength plan was set up for Europe.
  18. [18]
    47 CFR Part 73 Subpart B -- FM Broadcast Stations - eCFR
    The FM broadcast band consists of that portion of the radio frequency spectrum between 88 MHz and 108 MHz. It is divided into 100 channels of 200 kHz each.
  19. [19]
    https://forums.radioreference.com/threads/whats-the-vhf-uhf-channel-spacing-where-you-live.297982/
  20. [20]
    How FM Stereo Came to Life - Radio World
    Nov 4, 2022 · The FCC authorized regular stereo FM to start June 1, 1961. WGFM (now WRVE, Schenectady, N.Y.) was the first station to go stereo at midnight ...
  21. [21]
    Your Guide to FM RDS: What Is It, and How Does It Work? - Media ...
    Nov 6, 2023 · History and Standardisation of RDS​​ RDS was officially standardised in 1984 after an earlier project by Radio France, and then further ...Missing: introduction | Show results with:introduction
  22. [22]
    28 Top Radio Statistics For 2025 (AM/FM, Digital & More) - Tone Island
    According to projections listed on Statista, over 3.2 billion people around the world will listen to radio within the next five years. To put that into ...Missing: non- | Show results with:non-
  23. [23]
    AM/FM Still Outpaces Streaming For Top US Music Platform
    Dec 9, 2024 · Music videos on YouTube and podcasts followed with 13% and 10%, respectively. Radio dominates ad-supported audio with a 69% share, outperforming ...
  24. [24]
    AM vs FM vs PM: Modulation Techniques Compared
    FM is generally considered superior to AM due to its better noise immunity and ability to reject interfering signals thanks to the capture effect. Advantages, ...
  25. [25]
    Why is the noise immunity frequency modulation better than ... - Quora
    Jul 7, 2015 · FM systems are better at rejecting noise than AM systems. Noise is generally uniformly spread across the spectrum and varies randomly in amplitude.What is the effect of noise in FM? - QuoraWhy does greater frequency deviation in frequency modulation give ...More results from www.quora.com
  26. [26]
    Why FM is Superior to AM: Advantages of Frequency Modulation
    Jan 2, 2020 · 1. Better Noise Immunity · 2. Improved Signal Quality · 3. Better Audio Fidelity · 4. Greater Resistance to Fading · 5. Power Efficiency · 6. Less ...
  27. [27]
    Radio Confusion | Blog or Die!
    Feb 3, 2024 · The FM broadcast in the United States starts at 88.0 MHz and ends at 108.0 MHz. The band is divided into 100 channels, each 200 kHz (0.2 MHz) wide.
  28. [28]
    FM vs DAB+: Understanding the Key Differences - RF Wireless World
    Both FM and DAB+ are used for radio broadcasting. FM is an analog technique, while DAB+ is a digital technique for radio broadcasts.
  29. [29]
    [PDF] The cost effective Radio transmission - ITU
    Why DAB+ is more green & cost effective than analogue FM Radio ? 1. Introduction. 2. Transmitter investment & operational costs DAB+ versus FM. 3. Single ...
  30. [30]
    Multipath Distortion - Menace to FM Stereo?, February 1963 Radio ...
    Since multipath reception causes distortion of phase, frequency and amplitude, tuners that exaggerate these effects will be especially susceptible to multipath ...
  31. [31]
    [PDF] FM Multipath Noise Reduction - DENSO TEN
    The multipath noise is caused by the phase distortion and amplitude distortion generated when the broadcast waves reflected off a building, moun- tain, or car ...Missing: susceptibility | Show results with:susceptibility
  32. [32]
    Difference between Amplitude Modulation and Frequency Modulation
    Jul 15, 2025 · Uses More Bandwidth: FM requires more space on the radio spectrum than AM, which means fewer channels can be used in the same frequency range.
  33. [33]
    [PDF] A simple guide to radio spectrum - EBU tech
    An FM station requires 300 kHz bandwidth, therefore each FM radio station takes up three spectrum channels. In the case of television broadcasting, the agreed ...
  34. [34]
    (PDF) Optimal Abolition of FCC Spectrum Allocation - ResearchGate
    Liberal reforms, in contrast, produce large but broadly dispersed efficiency gains and are undersupplied. This paper proposes an incremental extension of ...
  35. [35]
    Is It Time for Radio to Restore Dynamic Range?
    Jan 2, 2021 · Due to freedom from distortion in processors and loudness wars, however, much of radio has reached a state of hyper-compression, where ...
  36. [36]
    This 1996 Law Was Meant to Save Radio. Instead, It Decimated ...
    Oct 21, 2020 · The Telecommunications Act of 1996 lifted a cap on the number of radio properties a single company could own nationally.
  37. [37]
    [PDF] No Competition: How Radio Consolidation Has Diminished Diversity ...
    Dec 9, 2003 · consolidation of radio following the Telecommunications Act of 1996 has resulted in a loss of localism, less competition, fewer viewpoints ...
  38. [38]
    The Sordid History of the Fairness Doctrine | Cato Institute
    Jan 30, 2021 · The Fairness Doctrine was primarily a tool wielded by established political interests to suppress unwelcome speech.
  39. [39]
    Why The Fairness Doctrine Is Anything But Fair
    Thus, the result of the fairness doctrine in many cases would be to stifle the growth of disseminating views and, in effect, make free speech less free. This ...<|separator|>
  40. [40]
    [PDF] fcc radio market structure and music
    The 1996 Act made two major regulatory changes in the radio market. First, the. 1996 Act increased the number of radio stations that a single radio owner could ...
  41. [41]
    [PDF] OT Report 78-144: Radio Propagation in Urban Areas
    A serious problem in urban propagation is the multipath interference, which causes the radio signal to fade rapidly and deeply, depths of 30 dB being quite ...Missing: limitations | Show results with:limitations
  42. [42]
    FM Radio vs Streaming on wifi vs streaming on 3G - Reddit
    Jun 24, 2010 · Is there much power consumption difference between FM radio, wifi streaming, and 3G streaming? I am looking for an Android phone.Data Usage Caps Will Kill The Streaming Services : r/cordcuttersAM/FM Still Outpaces Streaming For Top US Music Platform : r/radioMore results from www.reddit.comMissing: criticisms caps interference
  43. [43]
    U.S. HD Radio by the Numbers
    specifically that 21% of commercial FM stations are using HD Radio — are more meaningful when assessing the technology's ...Missing: 2023 | Show results with:2023
  44. [44]
    El-Dinary Expects Further Uptake of HD Radio
    Dec 5, 2024 · In 2023, over 50% of new cars sold in Canada included HD Radio. With the recent ISED publication, we expect this to grow in the coming years. ...
  45. [45]
    Digital Radio Broadcasting Market Size & Opportunities Report, 2033
    Sep 22, 2025 · In North America, HD Radio accounts for over 55% of digital radio usage. More than 70% of newly sold cars come equipped with HD Radio systems.
  46. [46]
    Frequency modulation technology for power systems incorporating ...
    Mar 9, 2025 · The proposed model can quantify the frequency response characteristics of the power system more accurately, and improve the frequency stability ...
  47. [47]
    Coordinated frequency modulation strategy considering source ...
    Feb 4, 2025 · Traditional thermal power frequency modulation (FM) plants are affected by the mechanical rotating parts and have low ramp rates, which make it ...
  48. [48]
    FM-OFDM: Unifying High-Mobility Communications and Sensing
    Aug 22, 2025 · The upcoming 6G wireless networks promise a transformation of global connectivity, targeting ultra-high data rates up to terabits per second ( ...
  49. [49]
    Radio Is An Indispensable Public Safety Resource. The Maui ...
    Oct 3, 2023 · Radio stations function like emergency bulletin boards for the community during a crisis. Amidst triple-digit temperatures during Hurricane Ida, ...
  50. [50]
    Letter: Emergency Response in Maui Fires Highlights ... - Radio World
    Aug 15, 2023 · In this letter to the editor, the author comments on radio's role in emergency management in relation to the recent devastation on Maui.
  51. [51]
    [PDF] Sound Data: The State of Audio in 50 Charts By Edison Research
    With adults in the U.S. clocking 71% of their time listening to AM/FM Radio, that's more than double the time spent with Streaming Music (29%). This chart shows ...
  52. [52]
    The Record: Q4 U.S. audio listening trends - Nielsen
    During the fourth quarter of 2024 (Oct-Dec), listeners spent 67% of their daily time with ad-supported audio with radio, 18% with podcasts, 12% with streaming ...
  53. [53]
    An ADPLL-Based GFSK Modulator with Two-Point Modulation ... - NIH
    Aug 14, 2024 · This study presents a novel approach as follows: a fully integrated all-digital phase-locked loop (ADPLL)-based Gaussian frequency shift keying (GFSK) modulator
  54. [54]
    Fermium | Fm (Element) - PubChem
    Fm-250, with a half-life of 30 minutes, was shown to be a decay product of nobelium, element 102 and the chemical identification of the isotope 250Fm confirmed ...
  55. [55]
    [PDF] The Transuranium Elements: From Neptunium and Plutonium to ...
    granddaughter, 252Fm, which decays with a half-life of 25 hours. This daughter was identified both chemically and by its characteristic alpha decay. Thus ...
  56. [56]
    [PDF] Smooth trends in fermium charge radii and the impact of shell effects
    Oct 31, 2024 · From in-beam γ-ray spectroscopy experiments, a large prolate defor- mation for the N = 152 nucleus 252Fm with a quadrupole deformation parameter ...
  57. [57]
    Femtometre | unit of measurement - Britannica
    A femtometre (fm) is a unit of measurement equal to 10^-15 metre, used for measuring nuclear sizes.Missing: definition physics
  58. [58]
    Nuclear Units - HyperPhysics Concepts
    Common nuclear units include MeV for energy, fermis (10^-15m) for size, and atomic mass units (amu) for mass. 1 amu = 1.66054 x 10^-27 kg.
  59. [59]
    [PDF] The Proton Charge Radius Puzzle: an Overview - CERN Indico
    Sep 30, 2024 · Over 60 years of experimentation! ✓ started from 0.78 fm. ✓ reached to 0.895 fm (by 2014). ✓ the current value 0.84 fm (from 2018). A ...
  60. [60]
    FORTRAN Monitor System FMS - OSdata.com
    Mar 1, 2004 · FORTRAN Monitor system. Operating System developed by North American Aviation for the IBM 709. Late 1950s.
  61. [61]
    FMS: The IBM FORTRAN Monitor System - IEEE Computer Society
    FMS: The IBM FORTRAN Monitor System by RAY A. LARNER IBM Corporation Boulder, Colorado ABSTRACT This paper is a short history of the IBM FORTRAN Monitor ...
  62. [62]
    [PDF] FMS: The IBM FORTRAN Monitor System | Semantic Scholar
    This paper is a short history of the IBM FORTRAN Monitor System (FMS) and its follow-ons, which provided a popular early "work horse" operating system for ...
  63. [63]
    Research and testing for property loss prevention services - FM
    FM sets worldwide standards for safety and resilience. FM Approvals® certifies products meeting these standards, ensuring they meet high property loss  ...
  64. [64]
    FM property loss prevention data sheets
    These exacting standards help you reduce the chance of property loss due to fire, weather conditions, and failure of electrical or mechanical equipment.
  65. [65]
    Fire Hazards & Protection Engineering - FM
    FM researches fire hazards, flammability, water-based suppression, and material reactivity, using state-of-the-art testing and practical solutions.Missing: standards | Show results with:standards
  66. [66]
    Simulation example: Narrowband FM transceiver - GNU Radio Wiki
    May 15, 2024 · This tutorial simulates a Narrowband FM transceiver using GNU Radio, sending signals via socket, using computer's microphone and speaker, and ...
  67. [67]
    GnuRadio Tutorial: Complete Frequency Modulation (FM) System ...
    Feb 11, 2025 · Complete Simulation of FM SYSTEM. USING FM WBFM Transmit and WBFM Receive Block. DON'T FORGET TO LIKE & SUBSCRIBE TO THE CHANNEL & CLICK THE ...
  68. [68]
    Design Indoor FM Communication Based on SDR and GNU Radio ...
    Aug 6, 2025 · This paper will explain FM communication simulations that use a guide between GNU Radio and RTL-SDR and are validated using a spectrum analyzer.<|control11|><|separator|>
  69. [69]
    Familial Mediterranean Fever - StatPearls - NCBI Bookshelf
    Jul 31, 2023 · FMF is characterized by recurrent episodes of fever and serositis (chest, abdomen, joints), leading to painful attacks early during childhood.
  70. [70]
    Familial Mediterranean fever - Genetics - MedlinePlus
    Aug 11, 2021 · Familial Mediterranean fever is an inherited condition characterized by recurrent episodes of painful inflammation in the abdomen, chest, or joints.
  71. [71]
    Familial Mediterranean fever - Symptoms & causes - Mayo Clinic
    Familial Mediterranean fever (FMF) is a genetic autoinflammatory disorder that causes recurrent fevers and painful inflammation of your abdomen, chest and ...Overview · Symptoms · Complications<|separator|>
  72. [72]
    Familial Mediterranean fever: Epidemiology, genetics, and ...
    Nov 22, 2024 · In Israel, FMF prevalence varies by ethnic group, ranging from 1 in 500 to 1 in 1000 among non-Ashkenazi Jews, and 1 in 73,000 among Ashkenazi ...
  73. [73]
    Familial Mediterranean Fever - Medscape Reference
    Oct 10, 2023 · At onset of symptoms, 50-60% of persons with FMF ... Evidence-based recommendations for genetic diagnosis of familial Mediterranean fever.
  74. [74]
    Familial Mediterranean Fever - Symptoms, Causes, Treatment | NORD
    A diagnosis of FMF can be confirmed by molecular genetic testing, which can identify the characteristic MEFV gene variants that cause the disorder.
  75. [75]
    Frequency-Dependent Signal Transmission and Modulation by ...
    A process in which the input stimulation frequency determines the amount or direction of modulation in information transmission through neural circuits.
  76. [76]
    Neural modelling of the encoding of fast frequency modulation - PMC
    Mar 3, 2021 · We developed a novel model of FM encoding incorporating a predictive interaction between the sweep and the spectral representation.
  77. [77]
    Amplitude and frequency modulation of subthalamic beta ... - Nature
    Oct 14, 2022 · Conversely, the possible role of the spontaneous frequency modulation (FM) in defining pathophysiological brain states remains unclear.Missing: medicine | Show results with:medicine
  78. [78]
    FM (1978) - IMDb
    Rating 6.3/10 (1,352) When a liberal music station's owners decide to introduce army recruitment ads, despite the protests of its manager, the rebellious DJs are determined to fight ...
  79. [79]
    Revisiting the Rock 'n' Roll Radio Movie 'FM'
    May 3, 2015 · FM stars Cleavon Little, Eileen Brennan, Martin Mull and Alex Karras in the story of Q-SKY, a fictitious radio station based on Los Angeles' legendary KMET.
  80. [80]
    FM - Rotten Tomatoes
    Rating 20% (10) Movie Info ; Production Co: Universal Pictures ; Rating: PG ; Genre: Musical , Comedy ; Original Language: English ; Release Date (Theaters): Apr 20, 1978, Original.
  81. [81]
    45 Years Ago: 'FM' Fails as a Film, but Succeeds as a Soundtrack
    Apr 28, 2023 · FM, which debuted in theaters on April 28, 1978, was unjustly trashed by critics and audiences, but then went on to spawn a soundtrack that went platinum.
  82. [82]
    FM (TV Series 1989–1990) - IMDb
    Rating 6.7/10 (40) FM is a comedy about a single dad running a radio station, dealing with his ex-wife's return, romantic confusion, and a young admirer.
  83. [83]
    https://www.themoviedb.org/tv/29810-fm
  84. [84]
    FM (TV Series 2009) - IMDb
    Rating 7.6/10 (507) Lindsay is a DJ at radio station Skin FM, urbane on air but a mess off it. With his co-host Dom, a former boy-bander, and producer Jane, they navigate love, ...
  85. [85]
    The Room Opposite by F.M. Mayor (1935) - Neglected Books
    May 10, 2023 · By rights, F.M. Mayor should be one of England's most beloved novelists. The Rector's Daughter was a bestseller upon its initial release and ...
  86. [86]
    1Q84 - Washington Independent Review of Books
    Nov 2, 2011 · Book Review in Literary, Science Fiction. 1Q84. Haruki Murakami ... FM radio, Aomame enters a world where there are two moons in the ...
  87. [87]
    Poetry FM | University of Iowa Press
    May 12, 2023 · ... FM radio and the oral, performative emphasis of postwar poetry. Lisa Hollenbach traces the history of Pacifica Radio—founded in 1946, the ...Missing: novels | Show results with:novels
  88. [88]
    AOR/Classic Rock
    Classic Rock stations tend to play music of the '60s, '70s and '80s. In other formats these would be called "oldies." Rock stations refer to them as classics.
  89. [89]
    94.7 kmet - socalradiohistory.com!
    KLAC-FM "disappeared" and KMET was born during the 1967 frequency switch. As Tom Donahue got behind the mike for the first time, few (if any) knew then that ...
  90. [90]
    THE KMET-FM STORY: REFLECTIONS ON A FALLEN FORMAT
    Feb 10, 1987 · At its zenith, in 1980, KMET was the second most-listened to station in the market, behind KABC-AM talk radio--a first for a contemporary FM ...
  91. [91]
    ALBUM ORIENTED ROCK
    AOR, from the 1970s, was a radio format focused on album sales, not singles, and was considered "hard pop" with a mix of hard rock and pop.
  92. [92]
    FM Songs, Albums, Reviews, Bio & More - AllMusic
    Explore FM's discography including top tracks, albums, and reviews. Learn ... The progressive rock group known as FM formed in Toronto, Canada, in 1976.
  93. [93]
    FM discography and reviews - Prog Archives
    Free delivery over $125FM top albums (CD, LP, MC, SACD, DVD-A, Digital Media Download) ; 4.07 | 184 ratings. Black Noise 1977. 3.59 | 102 ratings. Direct To Disc [Aka: Head Room] 1978.
  94. [94]
    Yamaha DX7: The Birth Of FM Synthesis | Podcast
    In 1973 Stanford University licensed the FM synthesis patent to Yamaha in Japan, leading to the most successful synthesis engine in the history of electronic ...
  95. [95]
    The Yamaha DX7 in Synthesizer History - Megan Lavengood
    The innovation of FM synthesis was the greatest strength of the DX7, but also, paradoxically, its greatest failure. The DX7 rapidly gained a reputation as being ...
  96. [96]
    [Chapter 2] FM Tone Generators and the Dawn of Home Music ...
    The standard bearer for digital synthesizers, the DX7 (May 1983, shown at front), and its successor, the DX7IIFD (October 1986 second from front).
  97. [97]
    Football Manager 26 | Official Site
    Change The Game​​ Powered by the Unity engine, experience the richest Match Day experience in series history with enhanced player movement and greater on-pitch ...News · Football Manager 2024 to... · Football Manager 25 Delayed... · FMFC
  98. [98]
    Football Manager | SI Games - Sports Interactive
    FM24 was an historically significant title for the franchise. It marked our first release in Japan, complete with official licensing of the Meiji Yamada J. ...
  99. [99]
    Football Manager simulation – history | Red Bull Games
    Jul 26, 2016 · The great history of the football manager sim. From dugouts to desktops, we trace the evolution of the football management sim with those involved.
  100. [100]
    FM Sports Abbreviation Meaning - All Acronyms
    FM Sports Abbreviation ; 3. Football Manager · Football, Soccer, Sport · Football, Soccer, Sport ; 2. Flyball Master · Agility, Dog, Dog Sport · Agility, Dog, Dog ...
  101. [101]
    Field Marshal rank, a pinnacle of prestige, authority - The Nation
    May 21, 2025 · Countries such as Britain, Pakistan, Germany, India, and Russia have had their Field Marshals figures who became household names, not only ...
  102. [102]
    Field marshal (Pakistan) | Military Wiki - Fandom
    Field marshal /fildmɑːrʃl/ (or field-marshal, abbreviated as FM or FMoP) is a five-star honourary rank in Pakistan Army awarded by the Islamic Republic of ...
  103. [103]
    This is why there's no Field Marshal rank in the US military
    Mar 11, 2021 · The US needed an equivalent to the British and Russian Field Marshal. But they declined. Instead, the five-star “General of the Army” and “Fleet Admiral” for ...
  104. [104]
    [PDF] Abbreviations and Terms - state.gov
    FM, foreign minister; also from. FMS, foreign military sales. FonMin, Foreign ... GOC, Government of Cyprus. GOG, Government of Greece. GOT, Government of ...
  105. [105]
    FM History | From 1835 Innovation to Global Resilience Leadership
    FM celebrated its 175th anniversary in 2010 with the company's mission and focus as contemporary and relevant as the day the company was founded in 1835— ...
  106. [106]
    FM - Insurance Business America
    Headquarters address, 270 Central Avenue, Johnston, Rhode Island 02919-4949, United States. Year established, 1835. Size (employees), 5,600+, ...
  107. [107]
    We are FM
    For nearly 200 years, we have helped businesses to protect their purpose through innovative commercial property insurance solutions.
  108. [108]
    FM Global Unveils Updated Brand to Reflect its Growth and ...
    Jul 17, 2024 · The company traces its roots to 1835, when Rhode Island textile mill owner Zachariah Allen banded together with like-minded manufacturers to ...
  109. [109]
    FM - Business & Finance - Acronym Finder
    What does FM stand for? ; FM · Financial Manager ; FM, Familymart ; FM, Faucet Mount (plumbing; various companies) ; FM, Fiscal Management.
  110. [110]
    iShares Frontier and Select EM ETF (FM) - Yahoo Finance
    Find the latest iShares Frontier and Select EM ETF (FM) stock quote, history, news and other vital information to help you with your stock trading and ...Missing: acronym | Show results with:acronym
  111. [111]
    FM - Micronesia (Federated States of) - ISO
    FM is the ISO alpha-2 code for Micronesia (Federated States of), also known as the Federated States of Micronesia, with principal islands Chuuk, Kosrae, ...
  112. [112]
    2025 Investment Climate Statements: Federated States of Micronesia
    Since independence, the United States has provided substantial economic assistance annually to the FSM under a Compact of Free Association (Compact or COFA).Missing: ISO aid
  113. [113]
    Federated States of Micronesia - Pacific Aid Map - Lowy Institute
    With a GDP of $427 million, FSM is the seventh-largest economy in the Pacific, accounting for 1.1% of regional GDP. FSM has a population of 114,000 (2022), ...
  114. [114]
    Micronesia - United States Department of State
    The US provides over $130 million in direct assistance every year, along with a variety of federal grants and services, until 2023.
  115. [115]
    Farm/Ranch to Market Facts - Texas Department of Transportation
    The year 1936 brought the beginning of the first farm to market road, although the great impetus for the construction of FM roads was not to come until ...
  116. [116]
    Highway designations glossary - Texas Department of Transportation
    Farm to Market Road (FM) A roadway generally in rural areas, so designated by the Texas Transportation Commission. Farm to Market Road Spurs (FS) Begins on ...
  117. [117]
    Understanding the Texas Farm to Market Road System
    Aug 29, 2019 · Today, Farm to Markets are abbreviated as FMs or as “Farm Road” on ... These Urban Roads, or URs, were an effort in 1995 to rename designated FM ...
  118. [118]
    archives.nypl.org -- F. M. Esfandiary / FM-2030 papers
    ... books published by F. M. Esfandiary and as FM-2030. Esfandiary's earliest published books include his novels Day of Sacrifice, The Beggar, and Identity Card.<|control11|><|separator|>
  119. [119]
    The Frozen Father of Modern Transhumanism - VICE
    Oct 14, 2015 · The roots of the modern movement can be traced back to a futurist named FM-2030, or Fereidoun M. Esfandiary. Esfandiary was born to an ...
  120. [120]
    FM-2030 - Goodreads
    FM-2030 (October 15, 1930 in Brussels – July 8, 2000 in New York) was an author, teacher, transhumanist philosopher, futurist and consultant. FM-2030 was ...<|control11|><|separator|>
  121. [121]
    Francis Marion | American Battlefield Trust
    Francis Marion was born around 1732 in Berkeley County, South Carolina ... After a decline in health, Francis Marion died on his plantation, Pond Bluff, on ...
  122. [122]
    Why Francis Marion Became the Father of Guerrilla Warfare
    Francis Marion waged successful guerrilla warfare against British forces in South Carolina during the final years of the American Revolutionary War.Missing: achievements | Show results with:achievements
  123. [123]
    Francis Marion - Naval History and Heritage Command
    Dec 19, 2014 · Francis Marion, born in St. John's Parish, S.C., in 1732, pursued a brief career on the sea before turning to plantation life.Missing: achievements | Show results with:achievements
  124. [124]
    Ferdinand Magellan - Ages of Exploration
    Ferdinand Magellan led the first expedition to circumnavigate the globe; considered the first European to cross the Pacific Ocean.
  125. [125]
    Why the Magellan Expedition Was So Treacherous - History.com
    Jul 20, 2023 · In 1519, Ferdinand Magellan set off on an audacious journey around the globe. Find out what made the expedition so dangerous—and why its leader ...
  126. [126]
    Ferdinand Magellan (1480–1521) – 500 years from the expedition
    Magellan's journey proved that the planet we live on has a spherical shape whose surface is dominated by the vast expanse of the oceans.
  127. [127]
    Fictional Initials (… so far) - Blue Towel Productions - WordPress.com
    Aug 31, 2019 · Also, I'm limiting myself, mostly, to just character's real names, their real initials. ... FM – Fox Mulder – The lead character of The X-Files.
  128. [128]
    Full Name :FOX WILLIAM MULDER Date of Birth - Fangirls Delight
    Oct 15, 2011 · Full Name :FOX WILLIAM MULDER. Date of Birth :13th of October 1961. Birthplace :Chilmark, Massachusetts. Height :6'0" (183cm). Hair :Brown.
  129. [129]
    FM-ian - Mega Man Wiki
    Jun 12, 2025 · An FM-ian (FM星人, lit. "FM Alien") is a race of EM Being appearing in the Star Force series. They hail from Planet FM, are usually based on constellations.
  130. [130]
    Gemini (FM-ian) - MMKB, the Mega Man Knowledge Base
    Dec 27, 2020 · Gemini (ジェミニ, Jemini) is an EM being from the Planet FM, based on the Gemini constellation. He is Patrick Sprigs's compatible FM-ian, ...Personality · Game History · Mega Man Star Force · Mega Man Star Force 2
  131. [131]
    Category:FM-ians | MMKB - Fandom
    A list of EM Beings from Planet FM. Trending pages. FM King Cepheus. Ophiuca. Gemini (FM-ian). Cygnus. Lyra. Taurus (FM-ian). Wolf. Corvus. All items (13).
  132. [132]
    FM-AD | Pixar Wiki - Fandom
    FM-AD (Food Management And Distribution) aka PNCH-R is a white robot with a tuscan red mouth-like bit and a silver circle on the top that holds a tray for food.