Icom OPC2379 VHF (118-137MHz) Headset Adapter Cable

Icom OPC2379 VHF (118-137MHz) Headset Adapter CableGeneral Aviation Dual Plug Headset Adapter for A25 Series Handhelds Premium dual socket conversion harness with external PTT port engineered for reliable cockpit backup communications. The Icom OPC2379 is an authentic original equipment manufacturer audio adapter cable designed to bridge a vital connectivity gap inside the cockpit. Engineered specifically for the high tier IC A25 series airband transceivers, this compact 7. 9 inch (200mm) conversion

General Aviation Dual-Plug Headset Adapter for A25 Series Handhelds

Premium dual-socket conversion harness with external PTT port engineered for reliable cockpit backup communications.

The Icom OPC2379 is an authentic original equipment manufacturer audio adapter cable designed to bridge a vital connectivity gap inside the cockpit. Engineered specifically for the high-tier IC-A25 series airband transceivers, this compact 7.9-inch (200mm) conversion line allows pilots to connect standard twin-plug General Aviation (GA) headsets directly to their handheld emergency backup radio. The Icom OPC2379 VHF (118-137MHz) Headset Adapter Cable eliminates the need to rely on low-volume internal speakers or handheld microphones during flight operations, enabling clear, crisp intercom integration and loud reception through active noise-canceling flight headsets.

Built to withstand rigorous flight conditions, the adapter interfaces with the radio chassis using a specialized right-angled, 2-pin slim L-type plug. The opposite termination breakout assembly splits into three robust, insulated input receptacles: a 5.23mm (PJ-068 equivalent) 3-conductor microphone socket, a 6.3mm (PJ-055 equivalent) 2-conductor headphone socket, and a specialized 3.5mm stereo socket. The auxiliary 3.5mm input is purpose-built to accept external yoke-mounted Push-to-Talk (PTT) trigger switches, providing flight crews with hands-free transmission convenience while navigating or controlling the aircraft.

Aviation technicians and flight safety coordinators should note that this product SKU consists strictly of the standalone adapter cable block. It does not feature an integrated electronic microphone preamp or active Bluetooth modulation rails. The standalone handheld VHF airband transceiver, yoke-mounted physical PTT switches, replacement intelligent lithium-ion battery packs, and primary aviation headsets are sold separately.

Key Features & Benefits

• Standard GA Twin-Plug Breakout: Converts the radio's specialized terminal into dual 5.23mm mic and 6.3mm phone sockets to support conventional aviation headsets.
• Integrated 3.5mm External PTT Port: Includes a dedicated auxiliary stereo jack to facilitate quick integration with external yoke-mounted push-to-talk switches.
• Molded Slim L-Type Interface: Features a low-profile, right-angled 2-pin connector that molds tightly against the radio frame to protect side data pins from torque stress.
• Compact 7.9-Inch Form Factor: Optimized 200mm cable length delivers enough routing slack without cluttering flight bags, flight controls, or cockpit instrument panels.
• Genuine OEM Shielding: Manufactured with authentic Icom insulating matrices to guard audio pathways against cockpit electromagnetic noise and engine alternator whine.

Specifications

Compatibility

Recommended Accessories

• Icom A25 VHF Airband Transceiver – High-performance handheld aviation radio featuring built-in GPS, Bluetooth capabilities, and full VOR navigation features.

Frequently Asked Questions

Is an external push-to-talk button included inside this adapter box?

No, this product listing covers solely the physical adapter cable harness. A yoke-mounted or handheld external PTT trigger switch must be acquired as a separate accessory.

Can I use this adapter cable with an IC-A16 or older IC-A6 airband radio?

No, this item is explicitly molded and pinned out for the slim port array found on the IC-A25 series. The IC-A16 requires the OPC-2401 adapter, while the legacy IC-A6 relies on the OPC-499.

Will this cable support military helicopter headsets with a single U-174 plug?

Not directly. This conversion block accepts standard dual-plug general aviation configurations. To utilize a helicopter headset, you must first attach a third-party single-to-dual GA adapter lead.

Can I push the talk key on the side of the radio while my headset is connected?

Yes, the transceiver's native side PTT button remains active and completely operational when this cable is plugged in, allowing you to choose between radio and external PTT controls.

Does this adapter path retain the radio's environmental IP57 waterproof rating?

No, introducing external audio jacks compromises the airtight environmental shell of the radio housing. This adapter should be protected from direct water exposure or heavy downpours.

Why is a right-angled L-type pin preferred over a straight plug design?

The right-angled slim design fits flush alongside the transceiver chassis, reducing the lateral profile to stop active lines from snagging or snapping the internal socket contacts.

Warranty

1-year manufacturer’s warranty.