The EC-130H Compass Call is an

electronic attack An electronic countermeasure (ECM) is an electrical or electronic device designed to trick or deceive radar, sonar, or other detection systems, like infrared (IR) or lasers. It may be used both offensively and defensively to deny targeting info ...

aircraft flown by the

United States Air Force The United States Air Force (USAF) is the Air force, air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its ori ...

. Based on the

Lockheed C-130 Hercules The Lockheed C-130 Hercules is an American four-engine turboprop military transport aircraft designed and built by Lockheed Corporation, Lockheed (now Lockheed Martin). Capable of using unprepared runways for takeoffs and landings, the C-130 w ...

, the aircraft is heavily modified to disrupt enemy command and control communications, perform offensive counterinformation operations, and carry out other kinds of electronic attacks. Planned upgrades will add the ability to attack early warning and acquisition radars. Based at Davis-Monthan AFB in Arizona, EC-130Hs can be deployed worldwide at short notice to support U.S. and allied strategic and tactical air, surface, and

special operations forces Special forces or special operations forces (SOF) are military units trained to conduct special operations. NATO has defined special operations as "military activities conducted by specially designated, organized, selected, trained and equip ...

. The EC-130H is one of the three main U.S. electronic warfare aircraft, along with the

Boeing EA-18G Growler The Boeing EA-18G Growler is an American carrier-based electronic warfare aircraft, a specialized version of the two-seat Boeing F/A-18F Super Hornet. The EA-18G replaced the Northrop Grumman EA-6B Prowlers in service with the United States N ...

, and

F-16CJ Fighting Falcon The General Dynamics F-16 Fighting Falcon is an American single-engine supersonic multirole fighter aircraft originally developed by General Dynamics for the United States Air Force (USAF). Designed as an air superiority day fighter, it evolv ...

, all of which can suppress enemy air defenses while jamming communications, radar, and command-and-control targets. In September 2017, the Air Force announced that

L3 Technologies L3 Technologies, formerly L-3 Communications Holdings, was an American company that supplied command and control, communications, intelligence, surveillance and reconnaissance ( C3ISR) systems and products, avionics, ocean products, training ...

will serve as the lead systems integrator for a future Compass Call aircraft based on the

Gulfstream G550 The Gulfstream G550 is an American business jet aircraft produced by the General Dynamics' Gulfstream Aerospace unit in Savannah, Georgia, US. The certification designation is GV-SP. A version with reduced fuel capacity was marketed as the G50 ...

business jet. The new Compass Call platform was designated as

EA-37B The EA-37B Compass Call (formerly EC-37B) is an electronic warfare aircraft based on the Gulfstream G550 entering service with the United States Air Force with the first example delivered on 23 August 2024 to Davis–Monthan Air Force Base for c ...

Air Combat Command The Air Combat Command (ACC) is one of nine List of Major Commands of the United States Air Force, Major Commands (MAJCOMs) in the United States Air Force, reporting to Headquarters, United States Air Force (HAF) at the Pentagon. It is the prim ...

on November 14, 2023. The EC-130H is based on the C-130 Hercules, which is a mid-sized four turboprop engine military transport originally developed in the 1950s, but has been upgraded many times and been the basis for many specialized versions including for electronic warfare. (see

Lockheed EC-130 The Lockheed Martin EC-130 series comprises several slightly different versions of the Lockheed C-130 Hercules that have been and continue to be operated by the U.S. Air Force and, until the 1990s, the U.S. Navy. The EC-130E Airborne Battlef ...

)

Design

Crew

The EC-130H aircraft carries a combat crew of 13 people. Four members handle aircraft flight and navigation (aircraft commander, co-pilot, navigator, and flight engineer), while nine members operate and employ the EA mission equipment permanently integrated into the cargo/mission compartment. The mission crew includes the mission crew commander (electronic warfare officer), weapon system officer (electronic warfare officer), mission crew supervisor (an experienced cryptologic linguist), four analysis operators (linguists), one acquisition operator, and an airborne maintenance technician.

Aircraft

The EC-130H fleet is composed of a mix of Baseline 1 and 2 aircraft. The Block 35 Baseline 1 EC-130H provides the Air Force with additional capabilities to jam communication, Early Warning/Acquisition radar, and navigation systems through higher effective radiated power, extended frequency range, and insertion of digital signal processing compared to earlier EC-130Hs. Baseline 1 aircraft have the flexibility to keep pace with adversary use of emerging technology. It promotes enhanced crew proficiency, maintenance, and sustainment with a common fleet configuration, new operator interface, increased reliability, and better fault detection. Baseline 2 has several upgrades to ease operator workload and improve effectiveness. Improved external communications allow Compass Call crews to maintain situational awareness and connectivity in dynamic operational and tactical environments. Aircraft communication capabilities are improved with the expansion of satellite communications connectivity compatible with emerging DoD architectures, increased multi-asset coordination nets, and upgraded data-link terminals. Delivery of Baseline-2 provides the Air Force with the equivalent of a "fifth generation electronic attack capability," providing improved aircraft performance and survivability. A majority of the improvements found in the EC-130H Compass Call Baseline-2 are classified modifications to the mission system that enhance precision and increase attack capabilities.

Operational history

42d Electronic Combat Squadron EC-130H Compass Call 1986

The Compass Call had its first flight in 1981, was delivered to the Air Force in 1982, and reached initial operating capability in 1983. All EC-130H Compass Call aircraft are assigned to

. The EC-130H is operated by the 55th Electronic Combat Group (ECG) consisting of two operational squadrons (41st and 43rd Electronic Combat Squadron (ECS)), a formal training unit (the 42nd ECS), the 755th Operations Support Squadron (OSS), and the 755th Aircraft Maintenance Squadron (AMXS). The 55th ECG is a tenant unit of the

355th Fighter Wing 355th may refer to: Aviation *355th Fighter Squadron, an inactive United States Air Force unit * 355th Fighter Wing, a United States Air Force unit assigned to the Air Combat Command's Twelfth Air Force * 355th Tactical Airlift Squadron, a U.S. Air ...

at Davis-Monthan AFB, Arizona. Although located at Davis-Monthan, the group reports to the 55th Wing at

Offutt AFB Offutt Air Force Base is a U.S. Air Force base south of Omaha, adjacent to Bellevue in Sarpy County, Nebraska. It is the headquarters of the U.S. Strategic Command (USSTRATCOM), the 557th Weather Wing, and the 55th Wing (55 WG) of the ...

, Nebraska. Compass Call has been used in

Yugoslavia , common_name = Yugoslavia , life_span = 1918–19921941–1945: World War II in Yugoslavia#Axis invasion and dismemberment of Yugoslavia, Axis occupation , p1 = Kingdom of SerbiaSerbia , flag_p ...

Haiti Haiti, officially the Republic of Haiti, is a country on the island of Hispaniola in the Caribbean Sea, east of Cuba and Jamaica, and south of the Bahamas. It occupies the western three-eighths of the island, which it shares with the Dominican ...

Panama Panama, officially the Republic of Panama, is a country in Latin America at the southern end of Central America, bordering South America. It is bordered by Costa Rica to the west, Colombia to the southeast, the Caribbean Sea to the north, and ...

Iraq Iraq, officially the Republic of Iraq, is a country in West Asia. It is bordered by Saudi Arabia to Iraq–Saudi Arabia border, the south, Turkey to Iraq–Turkey border, the north, Iran to Iran–Iraq border, the east, the Persian Gulf and ...

Afghanistan Afghanistan, officially the Islamic Emirate of Afghanistan, is a landlocked country located at the crossroads of Central Asia and South Asia. It is bordered by Pakistan to the Durand Line, east and south, Iran to the Afghanistan–Iran borde ...

, and elsewhere. From 2002 to 2015, EC-130Hs participating in

Operation Enduring Freedom - Afghanistan Operation Enduring Freedom (OEF) was the official name used by the U.S. government for both the first stage (2001–2014) of the War in Afghanistan (2001–2021) and the larger-scale Global War on Terrorism. On 7 October 2001, in response ...

and

Operation Freedom's Sentinel Operation Freedom's Sentinel (OFS) was the official name used by the U.S. government for the mission succeeding Operation Enduring Freedom (OEF) in continuation of the War in Afghanistan as part of the larger Global War on Terrorism. Operation ...

flew over 40,000 hours during 6,900 combat sorties. On 15 January 2020, the first EC-130H Compass Call (serial number 73-01587) was retired from active service. The aircraft was the first EC-130H Compass Call delivered to the Air Force in March 1982.

Operators

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***

55th Electronic Combat Group The 55th Electronic Combat Group, located at Davis-Monthan Air Force Base, provides combat-ready aircraft, crews, maintenance, and operational support to combatant commanders. The group is a Geographically Separated Unit which falls under the c ...

Specifications (EC-130H)

References

External links

Air Force Link: Air Force news story (Compass Call continues to 'Jam' enemy)

Air Force Link: Air Force news story ('Bats' shield Airmen from harm)

Air Force Link: Air Force news story (Airpower supports Afghan elections)

AircraftGuru.com: EC-130H Compass Call
{{Lockheed C-130H, E 1980s United States electronic warfare aircraft Four-engined tractor aircraft High-wing aircraft Four-engined turboprop aircraft EC-130H Electronic warfare Electronic countermeasures Aircraft with retractable tricycle landing gear