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KLOS

KLOS (95.5 FM, "95.5 KLOS") is a commercial radio station licensed to , , , that serves the area with a format. The station has broadcast continuously since adopting the format in , initially branding itself as "Rock 'n Stereo 95½ KLOS" during its early album rock era. Owned by Meruelo Media since its acquisition from in 2019 for $43 million, KLOS operates studios in Burbank and a transmitter in . The station is recognized as Southern California's premier rock outlet, featuring a spanning from the through the , with recent programming shifts incorporating more , , and early 2000s tracks to appeal to a broader audience. KLOS has maintained a prominent role in Los Angeles radio for over 50 years, hosting influential personalities and shows such as the morning program Heidi and Frank, nighttime host Greg Beharrell, and formerly the afternoon drive Kevin & Sluggo. In 2025, the station achieved its highest audience ratings since 1991, with a 4.1 share (6+ AQH) in May, driven by strong performance from its morning show, which ranked number one among adults 25-54.

Station Profile

General Information

KLOS (95.5 ) is a commercial radio station licensed to , , , broadcasting a mainstream format as of 2025. The station signed on December 30, 1947, as KECA-FM, initially simulcasting the programming of its AM KECA (now KABC). It changed its call sign to KABC-FM in 1954 to align with ABC's rebranding of its Los Angeles properties and adopted the KLOS call letters in 1971. Owned by Meruelo Media since its $43 million acquisition from Cumulus Media in 2019, KLOS operates on the 95.5 MHz frequency with a Class B license and an effective radiated power (ERP) of 61,000 watts. The station's format traces its roots to album-oriented rock (AOR) introduced in 1969, evolving into its current mainstream rock presentation, which incorporates a mix of classic and active rock tracks following programming refreshes in 2024–2025. KLOS maintains studios at 2600 West Olive Avenue in , and brands itself with the slogan "95.5 KLOS, The Rock of Southern California," emphasizing its longstanding role in delivering to the area.

Coverage and Facilities

KLOS operates as a Class B station with an (ERP) of 61,000 watts, enabling broad broadcast reach across . Its transmitter is situated on Mount Wilson at coordinates 34°13′37″N 118°04′01″W, 6,073 feet (1,851 meters) above , which optimizes signal propagation over varied terrain. The station serves the area, including County, , the Riverside-San Bernardino inland region, and Ventura County, delivering consistent coverage to over 18 million residents in this metropolitan market. Signal characteristics include a non-directional pattern, with the primary coverage contour at 60 encompassing core urban zones and the secondary contour at 54 extending to peripheral suburbs and valleys for reliable listening. Studio facilities are based at 2600 West Olive Avenue in 91505, supporting on-site production, programming, and content creation for the station's rock format. As part of Meruelo Media's portfolio, these integrate shared resources with sister properties such as (Power 106) and , facilitating collaborative operations, capabilities, and streamlined workflows across the group's outlets.

Historical Development

Inception and Early Years (1947–1969)

KLOS began broadcasting as KECA-FM on December 30, 1947, at 95.5 MHz in , initially simulcasting the programming of its AM sister station, KECA (790 AM), under the ownership of the (ABC). This setup was common for early FM stations, which often duplicated AM content to build listenership amid the slow adoption of FM receivers in households during the late 1940s. The station complied with (FCC) regulations for FM operations, including power limits and frequency allocations, as FM broadcasting was still emerging in major markets like . In 1954, following ABC's consolidation of its stations, KECA-FM adopted the call letters KABC-FM to align with the AM station's rebranding to KABC. During the 1950s, the station shifted toward a format, featuring light classical and instrumental selections, which was typical for FM outlets seeking to differentiate from AM's more varied programming while appealing to a growing but still niche audience. This period reflected FM's limited reach in Los Angeles, where AM dominated due to better and higher receiver penetration, resulting in modest listenership for KABC-FM despite its technical advancements. By the , programming evolved further; in 1960, KABC-FM transitioned to an all-talk format to provide distinct content from KABC-AM. On January 1, 1968, it adopted an all-news format, becoming one of the first in to do so, in response to new FCC rules mandating separate programming for AM-FM duopolies to promote . However, the all-news experiment was short-lived, lasting only until , as FM's audience remained constrained by the era's low FM set ownership—estimated at under 20% of radios in the U.S. by the late . Throughout this time, ABC maintained stable ownership of the station, providing continuity. This pre-rock phase laid the groundwork for the station's format shift in 1969.

Rock Format Adoption and Growth (1969–2011)

In early 1969, KABC-FM transitioned from its all-news format to an automated programming known as the "Love" format, directed by ABC FM Special Projects head Allen Shaw, marking the station's initial entry into broadcasting. This syndicated approach featured a mix of , , and mellow tracks, providing an alternative to the dominant Top 40 sounds on AM radio at the time. By April 1971, the station changed its call letters to KLOS to distinguish it from its AM sister station KABC, and in the fall of that year, under program director Tom Yates and ABC-Owned FM Stations Allen , it launched a pioneering (AOR) format branded as "Rock 'N Stereo." This shift emphasized deep cuts from rock albums rather than mainstream Top 40 singles, allowing DJs greater freedom in playlist selection while focusing on album tracks from artists like Led Zeppelin and The Who. The format quickly gained traction, propelling KLOS to become ' top-rated FM rock station by 1972 and entering the Arbitron top ten market rankings. KLOS solidified its rock identity through high-profile promotions, including its role in broadcasting and promoting the 1974 concert at the , which drew over 250,000 attendees and featured acts like and . In 1981, the station initiated its annual blood drive partnership with the , a community initiative that has collected nearly 200,000 units of blood as of 2025 for patients in need; the event peaked in 2014 with nearly 7,900 units gathered across multiple locations. Throughout the 1970s and , KLOS maintained its format, achieving peak listenership during this period as one of Southern California's premier rock outlets, often ranking among the market's top stations. It faced stiff competition from rivals like , which evolved from to in the , but KLOS held strong by sticking to classic and mainstream rock staples into the 1990s and 2000s. In 1985, ownership transferred from to following the $3.5 billion acquisition of by Capital Cities Communications. acquired in 1996, retaining KLOS as part of its radio portfolio until 2007, when Citadel Broadcasting merged with Disney's ABC Radio division, bringing the station under Citadel's control.

Cumulus Media Ownership (2011–2019)

In September 2011, Cumulus Media completed its $2.4 billion acquisition of Citadel Broadcasting, gaining ownership of KLOS (95.5 FM) as part of a transaction that included 242 other radio stations across the United States. This deal positioned Cumulus as the second-largest radio broadcaster in the country by revenue, with KLOS serving as a key asset in the competitive Los Angeles market. Under Cumulus ownership, KLOS maintained its established (AOR) format, focusing on classic and mainstream rock tracks from the through the , while introducing minor adjustments to appeal to broader audiences. In , the station underwent significant programming shifts, including the conclusion of the long-running Mark & Brian morning show on August 17 after 25 years on air, which had been a staple since 1987 and contributed to KLOS's strong listener loyalty. The show was replaced by the Heidi & Frank morning program starting September 4, , featuring hosts Heidi Hamilton and Frank Kramer, who brought a mix of humor, music, and local commentary to mornings; this change aimed to refresh the lineup while preserving the station's rock heritage. Additional tweaks included occasional infusions of elements and syndication trials, such as programming, to test listener engagement amid evolving market dynamics. KLOS faced challenges during the Cumulus era, including ratings fluctuations in a crowded Los Angeles radio landscape dominated by competitors like KROQ and KRQQ. Despite these, the station saw periodic gains, particularly in mornings following the 2012 transition, with program director Jack Silver noting improvements before his departure in July 2012. Community initiatives provided a counterbalance, exemplified by the 33rd annual KLOS Blood Drive in July 2014, which collected nearly 7,900 units of blood over four days in partnership with the —one of the largest single-drive collections in history. As Cumulus pursued , it announced the sale of KLOS to Meruelo Media on April 15, 2019, for $43 million in cash, with Meruelo assuming programming control via a effective April 16. The transaction closed on July 17, 2019, marking the end of Cumulus's ownership and transitioning KLOS to new management focused on revitalizing its rock identity.

Meruelo Media Ownership (2019–Present)

In July 2019, Meruelo Media completed its $43 million acquisition of KLOS from , following a that began in April of that year, during which the station maintained its with an initial emphasis on artists to solidify its position. This purchase marked Meruelo's entry into the rock radio space in , relocating KLOS's studios to align with its other properties while preserving the station's legacy as Southern California's rock staple. By late January 2020, amid the onset of the , KLOS pivoted to a mainstream rock format, incorporating more active tracks from the and to broaden its appeal, while Meruelo implemented staff cuts including furloughs for personalities like Frosty Stilwell to manage financial pressures. This shift retained core elements from the Cumulus era, such as the Heidi & Frank morning show, but introduced a fresher playlist rotation to attract younger listeners during uncertain times. Significant programming and talent changes marked 2024 and 2025 under Meruelo's direction. On September 6, 2024, afternoon hosts Kevin Ryder and "Sluggo" Roberts were dismissed as part of broader staff reductions at . In a lighthearted April 1, 2025, April Fools' stunt, KLOS temporarily rebranded as "95.5 SoCal's ," fully committing to smooth '70s and '80s imaging before reverting to its core format. Later that year, on February 3, 2025, rock veteran Nik Carter debuted in afternoons (3-7 p.m.), also taking over as host of the syndicated "" program starting February 8, with KLOS serving as its flagship station. A programming refresh in early 2025 further evolved KLOS's sound, increasing the mix of and '00s tracks for a more contemporary edge while reducing reliance on deep cuts, as evidenced by a March 2025 playlist analysis showing 2.9% from the , 30.9% from the , and notable '00s inclusions alongside '70s and '80s staples. This adjustment contributed to strong ratings performance, with the May 2025 PPM survey recording a 4.1 share among persons 6+—KLOS's highest since 1991—and the morning show ranking #1 in adults 25-54. In November 2025, program director departed the station to launch his media consultancy, Black Box Group.

Broadcasting Technology

Analog Signal and Studios

KLOS transmits its primary on 95.5 MHz in the band, employing standard stereo to deliver high-fidelity audio across the area. The station operates as a Class B facility with an (ERP) of 61,000 watts, enabling broad coverage from its transmitter site on Mount Wilson. This configuration supports a non-directional pattern at a (HAAT) of 954 meters, optimizing signal propagation in the challenging terrain of the . The elevated transmitter location and substantial help mitigate potential interference from the region's numerous co-channel and adjacent-channel stations, ensuring clear reception for listeners amid the dense urban spectrum. Daily analog operations involve continuous 24/7 , with the main signal serving as the for the channel to maintain format consistency across delivery methods. Signal reliability is generally high, though disruptions can occur during extreme events; for instance, the station's over-the-air transmission was temporarily offline during the January 2025 Eaton Fire, which threatened Mount Wilson facilities, before resuming operations. The , housed in the Meruelo Media facility on West Olive Avenue since September 2019, support a streamlined for live on-air broadcasts, audio , and of remote contributions from or contributors. This setup includes dedicated air studios for hosts, booths for editing and mixing, and networked systems for seamless remote audio feeds, facilitating real-time programming decisions and guest appearances. Following the relocation under Meruelo Media ownership, the facility underwent equipment enhancements, including the installation of consoles around 2020 to improve mixing efficiency and sound quality for rock programming. To ensure ongoing compliance, KLOS adheres to (FCC) standards for analog coverage contours, which define the protected service area based on the station's , HAAT, and terrain modeling to prevent harmful with other licensees. Regular maintenance, including transmitter inspections and signal monitoring, upholds these contours, with the station's Class B status confirming adequate protection ratios for the market.

HD Radio Operations

KLOS utilizes 's in-band on-channel (IBOC) digital transmission technology to deliver its primary programming alongside supplementary subchannels, enabling multicasting within the existing band. The channel simulcasts the station's core analog rock format, offering listeners with compatible receivers improved audio fidelity, reduced , and artist experience data such as song titles and album art. This setup has been in place since KLOS adopted in the mid-2000s, aligning with the technology's rollout for major market stations. The HD2 subchannel, branded as "KLOS2," launched on March 4, 2021, as a dedicated outlet operated in partnership with Toad Hop Entertainment. Initially featuring a 24-hour loop of highlights from the "Heidi & Frank Show" along with other syndicated talk segments, it has since expanded to include additional original content and personalities to fill the all-talk format. This addition targets audiences seeking extended access to conversational programming beyond the main channel's music focus. KLOS-HD3 provides a of (670 AM), a Persian-language and talk station serving Southern California's Iranian , beginning in 2021 to extend its reach via digital signals. Prior to this, the subchannel carried Armenian and cultural programming under the "SoCal Armenian" branding through 2020. The subchannel enhances accessibility for ethnic audiences with CD-quality audio and greater compared to AM. Technically, KLOS's HD broadcast operates within a total of approximately 200 kHz, including the and digital sidebands, using IBOC to avoid spectrum expansion. In multicasting mode, HD1 typically allocates up to 20 kHz of audio for transmission at of 64-96 kbps, while HD2 and HD3 share reduced allocations of around 12 kHz each at lower (e.g., 32-48 kbps per channel) to accommodate multiple streams without compromising core coverage. adoption in the market remains robust, with approximately 67% of new vehicles equipped with receivers as of mid-2025, supporting KLOS's digital extensions amid growing in-car integration. As of November 2025, no significant updates to these operations have occurred, with the subchannels contributing to Meruelo Media's strategy for diverse, multi-platform content delivery across its cluster.

On-Air Talent

Current Personalities

The morning show on KLOS features "The Heidi & Frank Show," hosted by Heidi Hamilton and Frank Kramer since September 4, 2012. The program blends comedy sketches, discussions, and segments on lifestyle topics, such as local events and celebrity interviews, attracting a loyal audience with its humorous take on daily life. Afternoons are led by Nik Carter, who joined KLOS on February 3, 2025, as the PM drive host, bringing experience from markets including Seattle's "" on The Brew. His show emphasizes interactive segments with listeners, trivia, and live calls focusing on classic and tracks to engage the drive-time demographic. Evenings feature the syndicated "Greg Beharrell Show," airing weekdays from 7:00 PM to 12:00 AM, known for its dry wit, storytelling, and curated playlists of rock hits that highlight artist anecdotes and fan stories. Beharrell, whose program originates from KLOS and is syndicated across , maintains a focus on connecting with night-time listeners through relaxed, narrative-driven content. Overnights and weekends incorporate syndicated programming, including Alice Cooper's show from 12:00 AM to 5:00 AM weekdays, featuring interviews and rock commentary from the shock rock icon. Weekend slots fill with specialists like "" hosted by on Sundays, " with Full Metal Jackie" for metal spotlights, "" hosted by Nik Carter, a syndicated deep-dive into albums that flags KLOS as its station since February 2025, and "KLOS New & Approved" hosted by on Sundays, showcasing emerging rock artists and interviews. No dedicated full-time overnight host operates locally. Behind the scenes, served as Vice President of Programming for KLOS from 2015 until November 2025, overseeing the station's rock format refresh post-2024, including talent acquisitions like amid Meruelo Media's strategic hires in early 2025.

Notable Former Personalities

served as a nighttime host at KLOS during multiple stints, beginning in 1971 and continuing through 1974, before returning from 1997 to 2011, where he was renowned for his freeform rock programming that emphasized album tracks, artist interviews, and thematic sets without rigid playlists. His approach, often called the "last DJ," influenced the station's identity and inspired Tom Petty's 2002 album , highlighting Ladd's resistance to commercial radio constraints. Ladd's over 50-year career in radio, including his KLOS periods, cemented his status as a pioneer in freeform broadcasting, with national reach through syndication and later . The morning drive team of and , known as the "Mark & Brian Show," anchored KLOS from 1987 to 2012, delivering a 25-year run of comedic sketches, celebrity interviews, and pop culture commentary that became a staple for listeners. Their syndicated program, which expanded nationally in later years, blended humor with segments, earning multiple Marconi Awards for major market personalities and contributing to KLOS's high ratings during the era. The show's end in 2012 marked the close of a significant chapter in morning radio, with retiring and pursuing work. Raechel Donahue hosted middays at KLOS in the mid-1980s, bringing her experience from pioneering freeform stations like KMET to the lineup, where she focused on deep album cuts and female perspectives in rock programming. Her tenure, though brief around 1986, added to KLOS's reputation for diverse voices during the format's growth, drawing on her earlier roles in shaping radio's underground sound nationally. Kevin Ryder and Doug "Sluggo" Roberts co-hosted afternoons as "Kevin & Sluggo" on KLOS until their dismissal in September 2024, a partnership that spanned over two decades on the station starting in the early 2000s, known for irreverent banter, listener call-ins, and rock-centric humor. Their show maintained KLOS's edgy personality amid format shifts, influencing local rock radio through long-term listener engagement before cuts at owner led to their exit.

Recognition and Impact

Awards and Nominations

KLOS has received notable recognition from the (NAB) through its Marconi Radio Awards and Crystal Radio Awards, highlighting the station's excellence in programming and commitment to . In 1991, KLOS won the NAB Marconi Award for Station of the Year, acknowledging its leadership in the rock during a pivotal era of industry growth. That same year, the station's morning show hosts Mark Thompson and Brian Phelps received the NAB Marconi Award for Major Market Personality of the Year, recognizing their innovative on-air contributions to engaging listeners. The NAB Crystal Radio Awards, which honor stations for outstanding year-round community service, have been a key area of acclaim for KLOS. The station earned this award in 1991, 1999, and 2005, with each win tied to initiatives like its long-running blood drives in partnership with the , demonstrating sustained efforts to support local health needs. These awards underscore the NAB's criteria emphasizing in , programming excellence, and impactful that enhances community welfare. Throughout the , KLOS received additional nominations for NAB Marconi Awards, reflecting ongoing industry acknowledgment of its rock format innovations, though specific details on categories remain limited in . No major NAB awards were reported for KLOS as of 2025, with the station's most recent Marconi recognition occurring in 2021 for Rock Station of the Year.

Community Contributions and Ratings Milestones

KLOS has long been a pillar in community engagement, particularly through its longstanding partnership with the American Red Cross for annual blood drives that began in 1981. These events, now in their 44th year as of 2025, mobilize thousands of donors across Southern California, with collection sites spanning Los Angeles, Orange, Riverside, San Bernardino, and Ventura counties. In one notable iteration, the drive gathered 9,681 units of blood products, establishing it as the nation's largest media-supported blood donation effort. Under Meruelo Media ownership since 2019, the initiative has persisted robustly, including the 2025 edition held on August 1–2, which drew 1,890 donors and collected 2,258 blood products, reinforcing KLOS's commitment to life-saving causes. Beyond blood drives, KLOS integrates with its heritage through promotions and charity-linked events. The station played a key role in promoting the iconic 1974 festival at , a landmark event that drew over 250,000 attendees and featured acts like and , cementing KLOS's influence in Southern California's rock scene. More recently, KLOS has tied promotions to charitable outcomes, such as the annual St. Jude Rocks radiothon, which raised a record $1.292 million in December 2024 for over 26 broadcast hours, surpassing the prior record of $1.28 million from February 2024 and $1.27 million in 2023. During the in 2020, KLOS maintained community support by adapting programming to uplift listeners amid isolation and uncertainty, contributing to its recognition as Rock Station of the Year. KLOS's ratings trajectory reflects its enduring cultural resonance, with peak performance in the and when it emerged as Los Angeles's top-rated FM rock station by 1972, driven by album-oriented programming that defined the era's . Following a programming refresh in 2024, trends showed upward momentum, aided by methodology updates like the three-minute listening threshold that boosted spring 2025 metrics across radio. The station achieved a milestone in May 2025 PPM ratings, posting a 4.1 share among persons 6+, its highest mark since fall 1991 and a climb from 3.6 in the prior book. The Heidi and Frank morning show ranked #1 in mornings among adults 25–54, while afternoons under Nik Carter saw similar gains, positioning KLOS ahead of competitors like KROQ, whose share lagged at around 3.0 in comparable periods, as KLOS captured displaced listeners with added hits. These milestones underscore KLOS's vital role in Southern California rock culture, where it has broadcast rock formats since , fostering a legacy of listener loyalty through high-energy events and targeted content. Engagement extends digitally via the KLOS app for and on-demand access, alongside active social media presence and podcasts featuring personalities like , enabling fans to connect beyond traditional airwaves and amplifying the station's community impact.

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