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Next Generation Jammer

The Next Generation Jammer (NGJ) is a podded airborne electronic attack system developed for the United States Navy's EA-18G Growler aircraft to replace the legacy AN/ALQ-99 tactical jamming system, delivering enhanced stand-off jamming capabilities against advanced enemy radar and communications threats.^[1] The NGJ program employs an incremental acquisition approach across three frequency bands—Mid-Band, Low Band, and High Band—to address evolving electromagnetic spectrum challenges with greater power output, precision targeting, and adaptability than prior systems.^[2] The Mid-Band increment (NGJ-MB), led by Raytheon Technologies, achieved initial operational capability in December 2024, marking the first combat-proven deployment of the system by Electronic Attack Squadron 133 (VAQ-133) and enabling quantum improvements in electronic warfare effectiveness for naval aviation.^[3]^[4] NGJ-MB pods provide expanded frequency agility, simultaneous multi-threat engagement, and higher effective radiated power, supporting full-rate production decisions anticipated in 2025.^[5] The Low Band increment (NGJ-LB), under development by L3Harris Technologies, targets lower-frequency threats with extended range and multi-target capabilities, following a $587 million engineering and manufacturing contract awarded in September 2024.^[6]^[7]

Program Overview

Objectives and Increments

The Next Generation Jammer (NGJ) program aims to deliver advanced electronic attack capabilities for the U.S. Navy's EA-18G Growler aircraft, enabling commanders to deny, degrade, or deceive enemy use of the electromagnetic spectrum through both reactive and pre-emptive jamming techniques against sophisticated air defense radars and communication systems.^[8] This supports suppression of enemy air defenses (SEAD) missions by carrier air wings in high-threat environments, addressing limitations in legacy systems against evolving integrated air defense networks.^[9] To systematically close spectrum gaps in electronic warfare, the NGJ adopts an evolutionary acquisition approach across three increments tailored to distinct frequency bands and threat types.^[1] The Mid-Band increment (NGJ-MB) targets primary threat radars operating in the 2-6 GHz range, providing core jamming against common acquisition and tracking systems.^[10] The Low-Band increment (NGJ-LB) focuses on frequencies below 2 GHz (approximately 100 MHz to 2 GHz), countering early-warning radars, surface surveillance, and long-range communication links.^[11] ^[12] The High-Band increment (NGJ-HB) addresses threats above 6 GHz (up to 18 GHz), including precision fire-control and missile guidance radars.^[11] Central to all increments is the objective of enabling simultaneous engagement of multiple threats via agile, digital electronic attack methods, which facilitate rapid waveform reconfiguration and adaptation to dynamic battlefield conditions.^[8] These capabilities emphasize software-defined architectures for enhanced responsiveness and seamless integration into network-centric warfare frameworks, allowing coordinated effects with other assets to dominate the electromagnetic spectrum.^[1]

Replacement of Legacy Systems

The AN/ALQ-99 Tactical Jamming System, fielded by the U.S. Navy in 1971, suffers from inherent limitations rooted in its analog architecture and dated design, including mechanical antenna steering constraints that hinder adaptability to agile threats.^[13] These shortcomings manifest in low power output, which has led to undetected faults in built-in test systems, prompting mission aborts and compromising operational reliability during deployments.^[14] Additionally, the system's vulnerability to modern digital electronic warfare environments, combined with high maintenance demands from aging components, has strained logistics and sustainment efforts amid escalating threats from peer competitors.^[15] The Next Generation Jammer (NGJ) program directly addresses these deficiencies by delivering substantially higher effective radiated power—reported as up to ten times that of the ALQ-99—along with enhanced precision in jamming operations and improved system reliability, thereby reducing the overall logistics footprint.^[16] These upgrades fulfill U.S. Navy requirements for countering advanced integrated air defense systems employed by adversaries such as China and Russia, where the ALQ-99's constraints would otherwise limit standoff electronic attack effectiveness.^[1] NGJ's design emphasizes rapid adaptability through software-defined capabilities, mitigating the ALQ-99's obsolescence without relying on its high-failure-prone hardware.^[8] Under the transition plan, NGJ pods—starting with the Mid-Band increment (AN/ALQ-249)—will initially augment the ALQ-99 on the EA-18G Growler platform before fully supplanting it across frequency bands, with Mid-Band achieving initial operational capability in December 2024.^[3] Low-Band and High-Band variants are slated for integration by the late 2020s, enabling comprehensive spectrum coverage and phased retirement of the legacy system to align with evolving threat landscapes. This incremental approach ensures continuity of electronic warfare missions while progressively enhancing Growler squadrons' ability to disrupt enemy command-and-control networks.^[17]

Development History

Inception and Early Concepts

The conceptual development of the Next Generation Jammer (NGJ) originated in the early 2000s, amid assessments of the AN/ALQ-99 tactical jamming system's growing obsolescence against post-Cold War advancements in adversary integrated air defenses, including active electronically scanned array (AESA) radars deployed by Chinese and Russian forces.^[18]^[19] Johns Hopkins University Applied Physics Laboratory (APL) contributed to initial NGJ concepts starting in 2001, focusing on evolutionary electronic warfare capabilities to address these gaps without overhauling legacy platforms like the EA-6B Prowler and its successor, the EA-18G Growler.^[20] The U.S. Navy formally initiated the NGJ program in 2013 as a core element of its airborne electronic attack modernization roadmap, prioritizing a podded, externally carried system to enable rapid integration on the Growler without requiring airframe structural modifications.^[21] This approach stemmed from operational analyses highlighting the ALQ-99's vulnerabilities to frequency-agile, high-power radars in dense threat environments, necessitating a successor with software-defined agility and distributed jamming potential.^[18] Early risk reduction activities under Program Element (PE) 0604274N emphasized technology demonstrations for gallium nitride (GaN)-based components and AESA architectures, aimed at enhancing effective radiated power to counter low-observable and networked threats while mitigating development uncertainties.^[22] These efforts built on first-hand evaluations of ALQ-99 performance shortfalls in simulated scenarios against evolving peer competitors, establishing NGJ's foundational requirements for spectrum dominance in contested airspace.^[23]

Mid-Band Development and Milestones

In April 2016, the U.S. Navy awarded Raytheon a sole-source cost-plus-incentive-fee contract for the engineering and manufacturing development phase of the Next Generation Jammer Mid-Band (NGJ-MB), selecting the company's gallium nitride (GaN)-based active electronically scanned array (AESA) design over competing proposals for its advanced power output and frequency agility.^[24]^[4] Raytheon delivered the first NGJ-MB engineering development model pod to the Navy in August 2019, enabling initial ground verification of installation procedures, mass properties, and built-in test functions on the EA-18G Growler platform.^[25] Integration testing commenced shortly thereafter, with the pod achieving its first flight on an EA-18G in August 2020 as part of the developmental flight test program, demonstrating effective multi-frequency jamming against simulated radar and communication threats during over 300 hours of subsequent airborne evaluations.^[26]^[27] The program advanced to Milestone C approval on June 28, 2021, authorizing low-rate initial production following successful completion of risk reduction and system qualification testing.^[28] Raytheon received a $580 million contract on May 16, 2025, for low-rate initial production Lot V, encompassing additional NGJ-MB pod shipsets including spares and support for U.S. Navy and international partners.^[29] The Navy declared initial operational capability for NGJ-MB in December 2024, confirming the system's readiness for fleet integration after production-representative pods began delivery in July 2023.^[3]^[1]

Low-Band and High-Band Pursuits

The Next Generation Jammer Low Band (NGJ-LB) program advanced through a competitive process initiated in 2018, when the U.S. Navy awarded concept refinement contracts valued at $36 million to L3 Technologies (subsequently L3Harris Technologies) and $35 million to Northrop Grumman. Raytheon's protest of these awards was denied by the Government Accountability Office in October 2018, allowing initial development to proceed. However, subsequent protests by Northrop Grumman, including a sustained challenge in September 2021 over evaluation irregularities, prolonged the effort and necessitated re-evaluations. Following resolution of litigation spanning nearly five years, the Navy awarded L3Harris a $587.4 million engineering and manufacturing development contract on September 12, 2024, for NGJ-LB pods to equip the EA-18G Growler.^[30]^[31]^[32]^[33] NGJ-LB specifically targets capability shortfalls in the low-frequency spectrum against advanced adversary systems, including VHF and UHF surveillance radars that enable long-range detection and counter-stealth operations. These gaps in the legacy AN/ALQ-99 Tactical Jamming System have heightened urgency for NGJ-LB, as peer competitors deploy low-band emitters to detect stealth platforms like the F-35 and F-22 at extended ranges. The system's design emphasizes augmented electronic attack in the 100 MHz to 2 GHz range, operating alongside NGJ mid-band pods to restore spectrum dominance. In June 2025, L3Harris contracted Honeywell for subsystem support to bolster NGJ-LB's development and integration.^[34]^[35]^[36] The Navy's persistence in selecting L3Harris's design amid procurement disputes underscores a calculated acceptance of technical risks to expedite delivery against time-sensitive threats from adversaries like China and Russia, prioritizing operational urgency over exhaustive threshold compliance in early evaluations. In contrast, the NGJ High Band (NGJ-HB) increment, intended for jamming millimeter-wave and upper microwave threats such as precision fire-control radars, remains in early conceptualization as of 2025 with minimal disclosed milestones. Naval priorities have deferred NGJ-HB to focus resources on mid-band and low-band fielding, reflecting assessments that low- and mid-frequency gaps represent more immediate vulnerabilities in contested electromagnetic environments.^[1]^[37]

Technical Design and Capabilities

System Architecture and Components

The Next Generation Jammer (NGJ) utilizes a modular, pod-based architecture comprising external, self-contained units optimized for carriage on compatible aircraft pylons. The mid-band increment, designated AN/ALQ-249, represents the initial pod configuration, featuring integrated active electronically scanned array (AESA) antennas arrayed across the pod's structure to enable directional electronic attack capabilities.^[1]^[4] Each pod incorporates four AESA panels, which employ gallium nitride (GaN)-based high-power amplifiers within transmit/receive modules to achieve efficient signal amplification and beam steering without mechanical gimbals.^[38]^[39] This solid-state design enhances system reliability and reduces vulnerability to failure modes inherent in legacy vacuum-tube systems. Key internal components include an exciter subsystem for initial signal generation, digital signal processors forming the all-digital backend for real-time waveform synthesis and adaptation, and dedicated cooling mechanisms to dissipate heat from sustained high-output operations.^[4] The open-systems architecture facilitates software-driven upgrades, minimizing the need for hardware overhauls and supporting evolutionary enhancements across increments.^[40] The pod form factor emphasizes modularity and survivability through standardized interfaces for rapid attachment and detachment, allowing maintenance crews to swap units without extensive aircraft modifications.^[41] Band-specific pods—mid-band, low-band, and high-band—enable flexible loadouts, where operators can equip aircraft with combinations tailored to mission requirements, thereby achieving layered spectrum dominance without redesigning the core system.^[1]^[41] This incremental approach prioritizes engineering choices that balance size, weight, and power constraints while ensuring the pods remain autonomous units with self-contained power and control electronics.^[2]

Jamming Technologies and Performance

The Next Generation Jammer (NGJ) utilizes active electronically scanned array (AESA) antennas to enable electronic beam steering, supporting rapid geolocation of threats and the simultaneous jamming of multiple radar emitters through focused, agile beams.^[1]^[42] This electronic scanning capability allows for beam repositioning in fractions of a second, outperforming the mechanical scanning limitations of the legacy AN/ALQ-99 system, which relies on slower physical pod adjustments and is less effective against dynamic threats.^[43]^[4] NGJ incorporates advanced electronic attack techniques, including noise jamming to saturate enemy receivers with high-power interference and deception methods such as the generation of false targets or echoes.^[44] These are augmented by digital radio frequency memory (DRFM) systems, which capture incoming signals, modify them digitally, and retransmit altered versions for precise replay-based deception, enhancing effectiveness against radars using pulse compression or other waveform features.^[45] The software-defined architecture further permits real-time waveform reconfiguration in milliseconds, adapting to frequency-hopping or agile radars by tracking and countering rapid signal changes across the mid-band spectrum (approximately 0.5–2 GHz for the mid-band increment).^[24] In terms of performance, NGJ delivers significantly higher effective isotropic radiated power (EIRP), estimated at up to 10 times that of the AN/ALQ-99's approximately 6.8 kW output, enabling robust standoff jamming against advanced integrated air defense systems.^[43]^[46] This power scaling, combined with AESA precision, supports engagement of multiple fourth- and fifth-generation threats at extended ranges, as verified in developmental testing phases through 2023, where the system demonstrated superior disruption of simulated peer-adversary emitters compared to legacy pod configurations.^[3]^[47]

Power Generation and Frequency Coverage

The Next Generation Jammer (NGJ) employs a ram-air turbine (RAT) generator to produce electrical power independently during flight, enabling high-peak outputs from gallium nitride (GaN)-based amplifiers without relying on the host aircraft's limited electrical capacity. This addresses key limitations of the legacy AN/ALQ-99 system, which drew power from the EA-18G Growler and constrained jamming intensity and duration due to aircraft generator constraints. The RAT, developed by Raytheon and partners like Advanced Technologies Group International (ATGI), can generate up to 90 kW at low-airspeed, high-altitude conditions typical of electronic warfare missions, supporting advanced jamming techniques and extended standoff engagements.^[48]^[49] NGJ operates across incremental frequency bands tailored to specific threat types, with the mid-band (NGJ-MB) covering 2-6 GHz to target fire-control radars used in precision-guided munitions and surface-to-air missiles. The low-band (NGJ-LB) addresses frequencies below 2 GHz (approximately 0.1-2 GHz), focusing on early-warning and search radars that detect aircraft at long ranges. The high-band (NGJ-HB) extends above 6 GHz (up to 18 GHz), countering terminal-guidance and fire-control systems in advanced missile seekers. Collectively, these increments aim to provide comprehensive spectrum coverage from roughly 0.1-18 GHz, enabling the system to disrupt diverse radar threats simultaneously.^[50]^[46] GaN technology in NGJ's active electronically scanned array (AESA) pods yields higher power efficiency and thermal tolerance compared to legacy gallium arsenide components, converting more input energy into effective jamming output and minimizing waste heat that could limit operational endurance. This efficiency directly enhances mission duration and effective isotropic radiated power (EIRP), allowing sustained jamming against multiple targets at greater standoff distances—up to several times that of the ALQ-99—while reducing failure risks in prolonged high-threat scenarios. The independent RAT power supply further amplifies these gains by enabling peak GaN amplifier performance without aircraft power throttling, thereby extending overall jamming range and sortie endurance.^[51]^[52]^[5]

Platforms and Integration

Integration with EA-18G Growler

The AN/ALQ-249 Next Generation Jammer Mid-Band (NGJ-MB) pods integrate with the EA-18G Growler as external carriage stores on underwing stations, requiring limited aircraft modifications for attachment, power provisioning, and data exchange to support electronic attack operations.^[1] The system leverages the Growler's existing mission computers and electronic receivers, such as the AN/ALQ-218, to process fused sensor inputs for coordinated jamming effects against enemy radar and communications.^[53] Integration testing commenced with ground validations prior to the first airborne flight of an NGJ-MB pod on an EA-18G in August 2020, conducted under the oversight of the Naval Air Warfare Center Weapons Division, confirming compatibility with the host aircraft's aerodynamics and systems.^[54] This phase built on earlier laboratory efforts at facilities including China Lake, California, ensuring seamless incorporation without electromagnetic interference to onboard receivers or performance degradation.^[16] To facilitate a phased transition from the legacy AN/ALQ-99 Tactical Jamming System, the NGJ design permits mixed pod configurations on the Growler, allowing squadrons to retain operational flexibility during incremental fielding while augmenting capabilities against advanced threats in carrier strike group missions.^[1] This adaptability supports the EA-18G's role in suppressing enemy air defenses within anti-access/area denial environments by combining legacy and next-generation jamming assets.^[55]

Adaptation for Other Platforms

The U.S. Navy and Raytheon Technologies (RTX) have begun exploring adaptations of Next Generation Jammer (NGJ) mid-band technology for platforms beyond the EA-18G Growler, including bombers, fighters, and unmanned aerial systems (UAS), to expand standoff electronic attack capabilities.^[56]^[57] This effort leverages the NGJ's pod-based modularity, enabling integration onto unmanned hosts for reduced risk in contested environments, with discussions emphasizing digital software adaptability for diverse airframes.^[56] Adaptations for ground-based or surface ship platforms remain under preliminary joint force consideration, primarily to support multi-domain operations, though air-launched variants are prioritized due to superior mobility and rapid deployment requirements in dynamic threat scenarios.^[42] For export, NGJ systems hold viability for allied forces operating F/A-18 variants, as evidenced by production contracts supporting the Royal Australian Air Force's EA-18G Growlers, which facilitate coalition suppression of enemy air defenses without requiring U.S.-specific proprietary integrations.^[58]^[59] This positions NGJ as a modular enabler for international partners, focusing on shared frequency coverage against advanced radars and communications.^[57]

Operational Deployment

Testing and Evaluation

Developmental testing of the Next Generation Jammer Mid-Band (NGJ-MB) began with the first flight of the pod on an EA-18G Growler in August 2020, initiating a multi-year flight test program at Naval Air Station Patuxent River and Naval Air Weapons Station China Lake.^[10] By fiscal year 2022, the program had accumulated 651 total flight hours, including 320 dedicated developmental flight test hours, evaluating system integration, reliability, and jamming performance against surrogate threats representative of advanced integrated air defense systems. These tests confirmed the pod's ability to deny radar tracks and neutralize threats more effectively than the legacy AN/ALQ-99 system, leveraging higher effective isotropic radiated power (EIRP) for standoff jamming of mid-band radars and communications.^[10] In 2023, Air Test and Evaluation Squadron Nine (VX-9) logged nearly 700 additional flight hours, clearing 95 percent of the full flight envelope and validating core electronic attack functions in threat-representative environments, though high-angle-of-attack maneuvers were deferred due to maintenance constraints.^[10] A June 2020 Government Accountability Office (GAO) assessment highlighted software immaturity as a key risk, noting that critical technologies had not fully matured prior to engineering and manufacturing development, potentially delaying integration with the EA-18G's mission systems.^[60] The Director, Operational Test and Evaluation (DOT&E) echoed concerns in subsequent reports, citing hardware reliability shortfalls and insufficient built-in test capabilities that limited fault isolation during flights.^[61] Despite these issues, integrated testing completed in March 2024 during Exercise Red Flag demonstrated operational viability with pre-production software, showing positive trends in data collection for modeling and simulation validation.^[62] In April 2023, the program conducted an Operational Test Readiness Review, certifying readiness for initial operational test and evaluation (IOT&E) by the Program Executive Office, though DOT&E withheld full approval due to system immaturity and unvalidated digital models, identifying risks in effectiveness and suitability but affirming basic jamming functions against surrogate threats.^[63] IOT&E commenced in July 2024, incorporating events like Exercise RIMPAC, with DOT&E approving the test plan and noting ongoing reliability improvements sufficient to support initial operational capability declaration in December 2024, prior to full IOT&E completion.^[62]^[3] Overall, pre-IOC assessments validated the NGJ-MB's superiority in threat neutralization metrics over ALQ-99 baselines, with empirical flight data indicating reliable radar denial in large-force exercises, despite persistent software-hardware integration challenges.^[10]

Initial Combat Use and Effectiveness

The Next Generation Jammer Mid-Band (NGJ-MB) entered initial combat operations during a five-month deployment by Electronic Attack Squadron 133 (VAQ-133), operating EA-18G Growler aircraft equipped with the ALQ-249 pods, to the U.S. 5th Fleet area of responsibility starting in mid-2024.^[64] This marked the first tactical employment of the system in a contested maritime environment, including operations supporting suppression of enemy air defenses (SEAD) against radar-guided threats in the Red Sea region amid Houthi attacks on shipping.^[56] VAQ-133's mission involved integrating NGJ-MB jamming with kinetic strikes, demonstrating the pod's ability to disrupt multiple radar emitters simultaneously at extended ranges compared to the legacy AN/ALQ-99 system.^[65] Post-deployment validation in December 2024 led the U.S. Navy to declare Initial Operational Capability (IOC) for the NGJ-MB, confirming its readiness for fleet-wide use following real-world performance data from the 5th Fleet operations.^[3] By July 2025, assessments reported the system's combat-proven effectiveness in multi-target engagements, enabling EA-18G aircraft to neutralize advanced air defense radars without the reliability shortfalls historically associated with ALQ-99 pods, such as power degradation and limited frequency agility.^[56] No pod failures were documented as mission-abortive during these initial sorties, attributing success to the NGJ-MB's digital architecture and higher effective radiated power.^[42]

Challenges and Criticisms

Technical and Reliability Issues

The Next Generation Jammer Mid-Band (NGJ-MB) has encountered hardware reliability shortfalls, primarily stemming from immature technologies identified in early assessments. A 2020 Government Accountability Office review highlighted that key components, including gallium nitride (GaN)-based amplifiers, lacked sufficient maturity at critical design review, complicating system integration and contributing to operational test setbacks due to unproven performance under stress conditions.^[60] These GaN elements, while enabling higher power output, are susceptible to thermal stresses that accelerate degradation, resulting in mean time between failures (MTBF) below program goals during laboratory and flight evaluations.^[66] Software deficiencies have emerged as a dominant reliability concern in subsequent testing phases. Director of Operational Test and Evaluation (DOT&E) assessments through fiscal year 2024 noted persistent issues with software stability, including faults in signal processing that impaired waveform generation and agility—essential for adaptive jamming against dynamic threats—leading to intermittent system failures and reduced effectiveness in simulated environments.^[62] By early 2025, these software-related problems had supplanted hardware as the primary driver of reliability gaps below established thresholds, with built-in test (BIT) diagnostics occasionally failing to detect latent anomalies, thereby risking undetected mission impacts.^[61]^[67] The Navy has pursued mitigations through iterative upgrades across production lots, incorporating software patches and enhanced thermal management for GaN modules to incrementally improve MTBF and fault detection.^[62] Program officials maintain that fielded pod reliability, while suboptimal in controlled metrics, demonstrates sufficient combat utility in operational scenarios, prioritizing real-world jamming efficacy over idealized lab benchmarks.^[3]

Procurement Delays and Cost Overruns

The Next Generation Jammer Mid-Band (NGJ-MB) program faced substantial timeline slippages after Raytheon received the engineering and manufacturing development contract in July 2016, with initial operational capability (IOC) delayed until January 2025—nearly nine years later, exceeding the Navy's original projection of five to six years from award.^[5]^[68] These delays stemmed primarily from persistent hardware reliability shortfalls and subsequent software integration challenges, as identified in annual reports by the Director of Operational Test and Evaluation (DOT&E), which deferred key operational testing milestones multiple times, including the Initial Operational Test and Evaluation (IOT&E) into 2024.^[69]^[70] The NGJ Low Band (NGJ-LB) increment encountered further procurement hurdles, including bid protests sustained by the Government Accountability Office (GAO) in 2021 over conflicts of interest in the evaluation process, which invalidated the December 2020 award to L3Harris and triggered a recompete lasting nearly five years.^[32]^[33] This litigation, compounded by threshold requirement waivers, postponed the final engineering and manufacturing development contract award to L3Harris until September 2024 at a value of $587.4 million.^[7] Earlier GAO-denied protests in 2018 had already fragmented initial low-band efforts between L3 and Northrop Grumman, adding to schedule instability.^[30] Cost growth has accompanied these delays, with the overall NGJ program accumulating expenditures well in excess of $5 billion across increments, including recent production contracts such as $590 million for NGJ-MB lots in December 2024 and ongoing research, development, test, and evaluation funding under Program Element (PE) 0604274N.^[24] FY2024 budget requests for PE 0604274N totaled $40.5 million, reflecting a post-NGJ-MB baseline adjustment amid shifts toward extended variants like NGJ-MBX, though cumulative outlays have drawn scrutiny for the incremental acquisition model's tendency to sustain parallel efforts and induce rework. GAO analyses have highlighted risks from immature technologies and weak requirements traceability, contributing to higher-than-planned expenses through iterative fixes rather than upfront maturation.^[71]^[60] Fiscal conservatives have criticized these dynamics, arguing that fragmented increments and protest-induced halts exemplify inefficient acquisition practices that inflate costs without proportional schedule gains, per GAO observations on DoD-wide electronic warfare programs.^[72] In contrast, defense proponents contend the investments yield superior jamming power and frequency agility over legacy ALQ-99 systems, justifying overruns in light of evolving threats from advanced integrated air defenses.^[73]

Testing and Maturity Concerns

The Next Generation Jammer Mid-Band (NGJ-MB) has faced scrutiny over deficiencies in its operational testing regime, particularly highlighted in a January 2023 analysis by the Potomac Officers Club, which warned that the impending initial operational test and evaluation (IOT&E) scheduled for May of that year risked being undermined by inadequate verification of digital models and simulations against real-world threats.^[74] This shortfall could leave unaddressed vulnerabilities exposed during live electronic warfare scenarios, as laboratory-based assessments failed to fully replicate the dynamic, peer-adversary environments anticipated in contested airspace.^[75] Subsequent evaluations by the Director, Operational Test and Evaluation (DOT&E) reinforced these issues, noting in early 2025 assessments persistent reliability challenges—shifting from hardware to software-related problems—that delayed full IOT&E completion into the second quarter of fiscal year 2025.^[61] DOT&E reports emphasized ongoing shortfalls in validating modeling and simulation tools for simulating advanced adversary systems, potentially eroding confidence in the system's maturity against near-peer threats like those from China or Russia.^[67] Despite these flags, the U.S. Navy proceeded to declare initial operational capability (IOC) for NGJ-MB in December 2024, citing operational urgency in response to escalating Indo-Pacific tensions, though critics within testing communities argued this rushed timeline prioritized deployment speed over comprehensive rigor, mirroring historical pitfalls in legacy systems such as the AN/ALQ-99 upgrades that suffered from protracted post-fielding fixes.^[42]^[65] Empirical data from the system's first combat deployment in 2024, aboard EA-18G Growlers with Electronic Attack Squadron VAQ-133 during a five-month U.S. Fifth Fleet operation, provided partial mitigation to lab-centric concerns, with squadron leaders reporting effective tactical employment against real-time threats without major disruptions.^[64]^[76] However, independent analysts and DOT&E observations cautioned that this early fielding, while operationally successful in limited contexts, did not substitute for exhaustive IOT&E, as untested edge cases in high-intensity jamming against integrated air defenses could manifest in future peer conflicts, echoing reliability shortfalls that plagued prior electronic warfare pod iterations.^[67] Proponents of extended testing advocate for fuller adversary emulation in simulations to ensure maturity, arguing that the Navy's balance of urgency against thoroughness remains a calculated risk informed by incremental combat feedback rather than definitive validation.^[61]

Strategic and Future Implications

Role in Modern Electronic Warfare

The Next Generation Jammer (NGJ) significantly bolsters the EA-18G Growler's core mission of denying, degrading, and disrupting adversary command, control, communications, computers, intelligence, surveillance, and reconnaissance (C4ISR) systems, thereby enhancing U.S. naval deterrence in anti-access/area denial (A2/AD) environments dominated by peer competitors.^[77] By countering sophisticated networked threats and integrated air defense systems, NGJ integrates into the Navy's distributed lethality doctrine, which disperses offensive capabilities across surface and air assets to complicate enemy targeting and improve overall force survivability.^[78] This doctrinal evolution emphasizes electronic attack as a multiplier for kinetic strikes, allowing Growler-equipped carrier strike groups to project power while degrading opponent kill chains from extended ranges.^[79] NGJ's advanced jamming architecture enables standoff operations that minimize exposure to high-risk zones, offering a non-kinetic alternative to traditional suppression of enemy air defenses (SEAD) reliant on missiles or close-in engagements, thus reducing pilot and platform attrition in contested airspace.^[56] Empirical validation emerged through VAQ-133's initial tactical employment and combat deployment in 2024, where the system demonstrated utility in hybrid warfare contexts involving electromagnetic spectrum contested operations, achieving initial operational capability (IOC) by December 2024.^[80] These operations underscored NGJ's capacity to maintain spectrum superiority against evolving threats, including those from proliferated precision-guided munitions and sensor fusion.^[5] U.S. Navy officials, such as Rear Adm. John Lemmon, position NGJ as a pivotal upgrade from legacy jammers, fostering agile electronic warfare that pivots toward offensive dominance and sustains deterrence by outpacing adversary adaptations in the electromagnetic domain.^[77] However, defense analysts highlight potential limitations stemming from the Growler's carrier dependency, arguing that concentrated electronic warfare assets aboard vulnerable platforms could be neutralized by asymmetric A2/AD salvos, and recommend diversifying with unmanned or land-based systems to distribute risk more effectively.^[81] This tension reflects broader debates on balancing centralized carrier power projection with resilient, dispersed architectures in modern naval strategy.^[82]

Export Potential and International Interest

The Next Generation Jammer Mid-Band (NGJ-MB) program involves cooperative development and production with the Royal Australian Air Force (RAAF), enabling integration on Australia's EA-18G Growler fleet to align with U.S. Navy capabilities.^[83]^[68] In December 2024, Raytheon received a $590 million contract for low-rate initial production of NGJ-MB pods, explicitly including units for both U.S. and Australian Growlers, highlighting Australia's role as the primary initial export partner.^[68] This collaboration adds international operational value and positions the system for broader allied adoption among F/A-18 Super Hornet operators, though U.S. export controls under the International Traffic in Arms Regulations restrict full technology transfer to vetted partners only.^[84] Indo-Pacific allies, particularly those confronting advanced Chinese anti-access/area-denial (A2/AD) networks, have shown interest in NGJ-like capabilities to enhance electronic warfare resilience, with Australia's procurement serving as a model for potential co-development or adaptation.^[85] The pod's modular design facilitates integration on compatible platforms like the EA-18G, motivating NATO members and partners to pursue analogous upgrades, though no formal NGJ exports beyond Australia have been confirmed as of 2025.^[86] Future evolutions, such as the NGJ Mid-Band Expansion (NGJ-MBX), aim to extend frequency coverage against emerging threats; Raytheon was awarded a $192 million contract in October 2024 for its development, with potential inclusion in ongoing Australia collaborations to support export scalability.^[87]^[83] These variants could broaden appeal to allies operating Growler or similar assets by 2030, pending successful testing and relaxed export approvals, though integration with unmanned systems remains exploratory without committed international partnerships.^[88]

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Feature: USN's Next Generation Jammer aims to field digital-era ...
Feb 13, 2025 · Increment 1 became NGJ-MB, Increment 2 was redesignated NGJ-LB, and Increment 3 was identified as NGJ-High Band (NGJ-HB). NAVAIR identified ...Missing: goals | Show results with:goals
[16]
Next Generation Jammer (NGJ) - Secret Projects Forum
Jul 14, 2014 · In terms of isotropic radiated power, the Next Gen Jammer is “about 10 times the power of what we typically put out in the ALQ-99,” he said. As ...
[17]
US Navy Declares Initial Operational Capability for the Next ...
Jan 6, 2025 · ... NGJ system that will augment and ultimately replace the legacy ALQ-99 Tactical Jamming System currently used on the EA-18G Growler. NGJ-MB ...
[18]
U.S. Airborne Electronic Attack Programs: Background and Issues ...
Jul 26, 2016 · [The] ALQ-99 [system] is facing material and technological obsolescence and cannot counter all current, much less future, threats." Figure 7. EA ...
[19]
https://nationalinterest.org/blog/buzz/how-the-us-navy-plans-crush-china-russias-air-defenses-20740
[20]
Next Generation Jammer - Johns Hopkins APL
We have been part of the NGJ team since initial concept development in 2001—playing a key role in the evolution of this initiative to equip warfighters of all ...Missing: inception early
[21]
Navy awards contract for next generation of electronic attack jammers
Jul 9, 2013 · The Navy awarded a $279.4-million contract to Raytheon Co. to build the next generation of electronic attack jammers, which spew radio waves ...
[22]
[PDF] Next Generation Jammer (NGJ) - DTIC
PE 0604274N: Next Generation Jammer (NGJ). Technology Development (Block 1) ... NGJ technology development activities to reduce technological risk and ...Missing: GaN AESA
[23]
The NGJ Mission - Deny, Degrade, and Disrupt Threats
Feb 20, 2018 · Raytheon's Next Generation Jammer (NGJ) has been under development now since 2013. In 2016 the US Navy awarded the company a 1 billion ...
[24]
[PDF] NGJ Mid-Band MSAR Dec 2023.pdf - Executive Services Directorate
Oct 8, 2024 · Mission The Next Generation Jammer Mid-Band (NGJ Mid-Band) program is an electronic attack system that will provide significantly improved ...
[25]
Raytheon delivers first Next Generation Jammer Mid-Band pod for ...
Aug 5, 2019 · Raytheon will deliver 15 EMD pods for mission systems testing and qualification as well as 14 aeromechanical pods for airworthiness ...Missing: milestones | Show results with:milestones
[26]
Next Generation Jammer Mid-Band takes to the skies for Growler ...
Aug 24, 2020 · ... EA-18G Growler – its first flight test on the aircraft. The U.S. Navy's NGJ-MB is an advanced electronic attack system that denies, disrupts ...
[27]
U.S. Navy receives first fleet representative NGJ-MB pods
Aug 9, 2022 · To date, NGJ-MB has successfully completed more than 300 hours of developmental flight testing and has more than 5,000 hours of chamber and lab ...Missing: milestones | Show results with:milestones
[28]
Next Generation Jammer Mid-Band receives Milestone C approval
Jun 29, 2021 · The Navy's Next Generation Jammer Mid-Band (NGJ-MB) program received Milestone C approval from Frederick J. Stefany, acting Assistant Secretary of the Navy.
[29]
RTX's Raytheon awarded $580 million production contract for Next ...
May 16, 2025 · Raytheon, an RTX (NYSE: RTX) business, has been awarded a $580 million follow-on production contract from the US Navy for the Next Generation Jammer Mid-Band ( ...
[30]
GAO Denies Raytheon Next Generation Jammer Protest - USNI News
Oct 26, 2018 · The new study contracts for follows an initial 2013 $271 million award to Raytheon for the ALQ-249, the mid-band portion of the NGJ. In 2016 ...<|separator|>
[31]
Ultimate guide to the next-gen jammer (NGJ) program - Intergalactic
Everything you need to know about the U.S. Navy's efforts to upgrade electronic jamming capabilities for fixed-wing fighters such as the Growler.<|separator|>
[32]
GAO sustains Northrop Grumman protest on NGJ-LB program
Sep 3, 2021 · The Government Accountability Office has upheld a protest Northrop Grumman filed against a contract awarded to L3Harris Technologies for the ...Missing: 2018 Raytheon
[33]
After nearly 5 years of litigation, Navy awards next system in ...
Sep 12, 2024 · The Navy awarded L3Harris a $587.4 million five-year contract for the Next Generation Jammer Low Band (NGJ-LB) system.
[34]
Let's Have A Closer Look At L3Harris' NGJ-LB (Next Generation ...
Sep 5, 2023 · The NGJ-LB will be extremely important to provide cover to stealth aircraft threatened by the emerging counter-stealth Low Band radars or to counter long-range ...
[35]
US Navy Declares IOC for Next-Gen Jammer Mid-Band
Jan 8, 2025 · The NGJ includes an NGJ-LB (Low-Band) and NGJ-HB (High-Band) that operate in the 100 MHz to 2 GHz waveband and 6 GHz to 18 GHz, respectively. “ ...Missing: delay millimeter- wave
[36]
Honeywell Selected by L3harris Technologies to Support ...
Jun 3, 2025 · Honeywell Selected by L3harris Technologies to Support Development of Next Generation Jammer Low Band System. June 3, 2025.
[37]
https://janes.com/osint-insights/defence-and-national-security-analysis/usns-next-generation-jammer-aims-to-field-digital-era-electronic-attack
[38]
GaN-Based AESAs Enable U.S. Navy's Next-Generation Jammer
May 30, 2014 · The array modules include electronics that use GaN high-power amplifiers (HPAs). Those amplifiers drive the power signals through the ...
[39]
[PDF] GaN AESAs Enable New Jammer - imgix
Physically, the NGJ is composed of two pods attached to the port and starboard modular attachments of the Growler. Each pod houses four AESAs with a full- ...
[40]
First AN/ALQ-249 Next Generation Jammer Mid-Band pod delivered ...
The first AN/ALQ-249 Next Generation Jammer Mid-Band (NGJ-MB) Engineering Development Model pod arrived at Naval Air Station Patuxent River after a trek across ...Missing: milestones | Show results with:milestones
[41]
AN/ALQ-249 Next Generation Jammer (NGJ) - GlobalSecurity.org
Jan 7, 2021 · The NGJ is the replacement system for the ALQ-99 to enable countering advancements in radars, communications and highly integrated air defense systems.
[42]
Next Generation Jammer Mid-Band Achieves Initial Operational ...
Jan 7, 2025 · The US Navy declared initial operational capability (IOC) for the AN/ALQ-249 Next Generation Jammer Mid-Band (NGJ-MB) system in December 2024.
[43]
[PDF] FY20 NAVY PROGRAMS - Next Generation Jammer
The NGJ is being acquired in three separate acquisition programs: Increment 1 (MB), Increment 2 (LB), and. Increment 3 (High-Band (HB)). These will eventually ...
[44]
Airborne electronic attack: Owning the invisible battlespace | Raytheon
Sep 27, 2023 · For example, its Next Generation Jammer Mid-Band, or NGJ-MB, will replace the aging ALQ-99 jamming pods currently used on the EA-18G Growler ...Missing: UHF gaps
[45]
Next Generation Jammer Visualization - Navy SBIR
NVISIN will model various types such as spot, barrage, sweep, and digital radio frequency memory (DRFM) jamming along with Next Generation Jammer (NGJ) features ...
[46]
AN/ALQ-249(V)3 Next Generation Jammer High Band
Jan 7, 2021 · Next Generation Jammer (NGJ), an external jamming pod, is an evolutionary acquisition program providing capability in three increments: ...<|separator|>
[47]
[PDF] Next Generation Jammer Mid-Band (NGJ Mid-Band)
Dec 29, 2022 · The NGJ Mid-Band system will augment and then replace the legacy AN/ALQ-. 99 Tactical Jamming System (fielded 1971) in the mid-band frequency ...
[48]
Raytheon's Next Generation Jammer Air Turbine Completes Initial ...
Oct 31, 2019 · The ram air turbine generator is designed to increase the NGJ-MB's power, enabling it to jam with higher power and support more sophisticated ...
[49]
Next-Gen Jammer Generator Eyed For Other Uses - ATGI
Sep 23, 2013 · ATGI has demonstrated that Hi-RAT can produce 90 kW of power at the original low-airspeed, high-altitude design point for NGJ, where the dynamic ...
[50]
How Powerful Is The US Navy's ALQ-249 Next Generation Jammer?
Dec 23, 2024 · Low band is directed specifically against 100 MHz to 2 GHz waveband, mid-band is 2 GHz to 6 GHz, and high-band is 6 GHz to 18 GHz.
[51]
Electronic Warfare - The Future of Modern Defense with GaN Tech
Higher Efficiency: GaN amplifiers provide higher efficiency, converting more input power into useful RF output. This makes them ideal for jamming applications ...Missing: NGJ endurance
[52]
[PDF] Next Generation Jammer Mid-Band (NGJ-MB)
NGJ will replace the ALQ-99 Tactical. Jammer System pods which were developed and fielded in 1971. Per the DOT&E approved TEMP,. NGJ-MB was originally slated to ...
[53]
[PDF] Next Generation Jammer Low Band (NGJ Low Band)
A revised APB will be submitted for approval when closer to finalizing the contract award. Status: NGJ LB RDT&E was Congressionally marked in FY 2023 for " ...
[54]
Flight Tests Begin on Next Generation Jammer Mid-Band Pods
Aug 19, 2020 · “We witnessed a successful first flight with the NGJ-MB capability fully integrated onto the EA-18G Growler, validating the last four years ...Missing: Lake | Show results with:Lake
[55]
Raytheon-built NGJ-MB takes to the skies for EA-18G Growler flight ...
Aug 24, 2020 · The US Navy's NGJ-MB is an advanced electronic attack system that denies, disrupts and degrades enemy technology, including communication tools and air-defense ...Missing: 2018-2020 China Lake
[56]
FTCN Replay: Next Generation Jammer Mid-Band Moves From ...
Jul 7, 2025 · Combat-Proven Performance. The NGJ-MB achieved Initial Operational Capability (IOC) in December 2024 and has already seen combat operations.
[57]
Next-Generation Jammer Seeks New Platforms - Aviation Week
RTX and the U.S. Navy are starting to explore applications for the Next-Generation Jammer's mid-band technology domestically and abroad ...
[58]
RTX's Raytheon awarded $590 million production contract for Next ...
Dec 5, 2024 · The U.S. Navy and RAAF will employ NGJ-MB on the EA-18G GROWLER® to target advanced radar threats, communications, data links and non- ...Missing: export F/
[59]
Raytheon awarded $590M for next-gen Navy jammer - Defence Blog
Dec 6, 2024 · The U.S. Navy and RAAF will employ the NGJ-MB system on their EA-18G Growlers to target advanced radar threats, communications, data links, and ...Missing: F/ | Show results with:F/
[60]
Watchdog discovers problems with Navy jammer - C4ISRNet
Jun 3, 2020 · The GAO found several issues associated with the Navy's Next Generation Jammer-Mid Band pod related to technology maturity and software.Missing: immaturity | Show results with:immaturity
[61]
More reliability issues trouble NGJ-MB, chief weapons tester finds
Feb 4, 2025 · While hardware was the main source of blame for delays within the program last year, software issues are now mostly at fault, according to the ...Missing: Jamming shortcomings
[62]
https://www.dote.osd.mil/Portals/97/pub/reports/FY2024/navy/2024ngj-mb.pdf
[63]
https://www.dote.osd.mil/Portals/97/pub/reports/FY2023/navy/2023ngj-mb.pdf
[64]
VAQ-133 “Wizards” complete historic first Next Generation Jammer ...
Dec 16, 2024 · VAQ-133 returns from a five-month deployment as the first Navy squadron to tactically employ the ALQ-249 Next Generation Jammer.
[65]
Navy's Next-Gen Jammer reaches IOC | InsideDefense.com
Jan 7, 2025 · The NGJ-MB consists of two pods under the EA-18G aircraft's wings and is the first of three programs set to replace the AN/ALQ-99 Tactical ...Missing: limitations | Show results with:limitations
[66]
[PDF] GAO-24-106831, Weapon Systems Annual Assessment
Jun 17, 2024 · yet to receive test aircraft to start developmental testing. Delivery is currently planned to start in the first quarter of fiscal year 2025 ...
[67]
Pentagon Weapons Tester Says Next-Gen Jammer Issues Now ...
Feb 6, 2025 · The Next Generation Jammer Mid-Band (NGJ-MB) is still dealing with reliability problems, now focused on software issues, according to the ...
[68]
Raytheon Awarded NGJ-MB Pod Production Contract - The Aviationist
Dec 6, 2024 · Raytheon has won a $590M contract for the production of Next-Generation Jammer – Mid Band pods to equip US Navy's and Royal Australian Air Force's EA-18G ...
[69]
NGJ-MB IOT&E delays continue | InsideDefense.com
Feb 2, 2024 · Hardware reliability issues and a lack of modeling are largely to blame for delays facing the Navy's Next Generation Jammer Mid-Band.
[70]
[PDF] Next Generation Jammer Mid-Band (NGJ-MB)
The Next Generation Jammer Mid-Band (NGJ-MB) did not conduct IOT&E in FY23 as planned. In. April 2023, the NGJ-MB program conducted an Operational Test ...
[71]
[PDF] GAO-13-642 Highlights, NEXT GENERATION JAMMER: DOD ...
At an estimated cost of over $7 billion, the Navy's NGJ program represents a significant investment in airborne electronic attack capabilities. Jammers, like ...Missing: overruns | Show results with:overruns
[72]
DOD Should Continue to Assess Potential Duplication and Overlap ...
Aug 20, 2013 · At an estimated cost of over $7 billion, the Navy's NGJ program represents a significant investment in airborne electronic attack capabilities.Missing: overruns | Show results with:overruns
[73]
Navy adding funds to increase range of next-generation jammer ...
Apr 5, 2023 · The Navy is increasing the range of its Next Generation Jammer-Mid-Band pod, in part due to gaps caused by the lack of a High-Band program.
[74]
Next Generation Jammer Mid-Band Risks Insufficient Testing Process
Jan 27, 2023 · The initial operational testing and evaluation of the Next Generation Jammer-Mid Band in May could be viewed as less effective due to a lack ...Missing: concerns | Show results with:concerns
[75]
Lack of verified digital models will reduce test confidence for Navy ...
Jan 26, 2023 · The system in question is the Next Generation Jammer-Mid Band, which will serve as the Navy's premier aerial electronic attack platform mounted ...
[76]
How The EA-18G Growler's Next-Generation Jamming Pod Went To ...
Feb 11, 2025 · Here is what the squadron commander and program manager said about the EA-18G's new AN/ALQ-249 jamming pods, which were thrust into combat last year.Missing: shortcomings | Show results with:shortcomings<|separator|>
[77]
US Navy Next Generation Jammer Mid-Band achieves IOC
Jan 9, 2025 · The US Navy NGJ-MB has achieved the IOC, signifying an advancement in electronic warfare capabilities for naval aviation around the globe.
[78]
The Next Generation Jammer (NGJ) and Distributed Electronic ...
Jun 15, 2011 · The NGJ is a wide-spectrum, stand-alone, software-driven jammer, designed as a joint force capability and part of a distributed electronic ...
[79]
Raytheon wins $590m for EA-18G Growler jammer production
Dec 6, 2024 · Raytheon has secured a $590m to continue production of the NGJ-MB system for the EA-18G Growler electronic attack aircraft.
[80]
VAQ-133 EA-18Gs Become First In The Navy To Tactically Employ ...
Dec 17, 2024 · The “Wizards” operated with the ALQ-249 Next-Generation Jammer (NGJ) and made the squadron the first in the Navy to deploy with the new pod.
[81]
The Threat is Here, It's Just Distributed Unevenly: A2/AD and the ...
Jul 28, 2016 · While the role of an aircraft carrier's EA-18G Growlers is to jam and confuse the radar of these missiles, the sophistication and range of these ...Missing: NGJ | Show results with:NGJ
[82]
Better Airborne Tactical Electronic Warfare | Proceedings
Increasing the F/A-18 and EA-18G numbers in CVWs could enable carriers contribute more effectively against a highly capable A2AD enemy.Missing: deterrence | Show results with:deterrence
[83]
RTX's Raytheon awarded U.S. Navy contract for Next Generation ...
Oct 1, 2024 · Raytheon, an RTX (NYSE: RTX) business, has been awarded a $192 million contract from the US Navy to develop the Next Generation Jammer Mid-Band Expansion.Missing: 2016 IOC
[84]
RTX's Raytheon awarded U.S. Navy contract for Next Generation ...
Oct 1, 2024 · Collaboration with the Royal Australian Air Force adds international value and potential for future exports. The timeline through 2027 ...
[85]
The USA's NGJ Strike Jammers: Raytheon's Mid-Band Win
Mar 3, 2022 · Australia will be interested in next-generation jamming pods for the same reliability and performance reasons that they interest the US Navy.
[86]
A look at the US Navy's Next Generation Jammer - Army Technology
Jun 14, 2018 · The US Navy's Next Generation Jammer, promises a new, more capable electronic warfare system that combines agile, high-power beam-jamming ...Missing: inception history
[87]
RTX's Raytheon contracted for US Navy Next Generation Jammer ...
Oct 2, 2024 · RTX's Raytheon business has been awarded a $192m contract from the US Navy to develop the Next Generation Jammer Mid-Band Expansion (NGJ-MBX).Missing: export potential<|separator|>
[88]
US Navy Invests Further $590M in Raytheon's Next-Gen Jamming ...
In October, Raytheon secured a $192-million contract to develop an upgraded NGJ-MB, called NGJ-MB Expansion or NGJ-MBX, for the US Navy. Electronic Attack ...