рус / eng
UAE Phone: +971 (6) 5570710, International phone: +8 835 1000 124 3547, e-mail:

Shopping cart: 0



The GMA 340 audio panel offers the latest in digital features to reduce cockpit workload and improve communication.

Operate with Ease

GMA 340 features convenient, LED-illuminated button controls for audio selection of both nav and com audio — as well as split comm capability for pilot and co-pilot. Large buttons activate the comm microphone and audios for up to three comm transceivers to simplify cockpit workload. Split comm allows the pilot to transmit/receive on Comm 1 and the co-pilot to transmit/receive on Comm 2.

Enjoy Host of Features

GMA 340 streamlines cockpit management. It provides MASQ processing, which reduces ambient noise from the avionics inputs, and it has special circuitry to de-emphasize cabin noise to enhance communication in the cockpit. You can select speakers to monitor the aircraft radios or make PA announcements. The 340 also provides comm transmit indication and the three-light Marker Beacon receiver/indicator with high or low sensitivity and SmartMute audio muting.

GMA 340 has two unswitched inputs for telephone ringers, altitude alert warnings or other warning tones, so you'll never miss an important incoming transmission. The 340 also includes a six-place VOX intercom with three modes of isolation, dual stereo music inputs and independent pilot, co-pilot and passenger volume control. In fact, each microphone input has a dedicated VOX circuit to ensure that only the active microphone is heard when squelch is broken.

GMA 340 is easy to install in the tightest aircraft spaces. Operation is available in 14 or 28 volts without voltage converters or dropping resistors. Installation is simplified with the built-in intercom and marker beacon, and the GMA 340 also features photo cell dimming of annunciators, pilot fail-safe mode connection to Comm 1 and FAA TSO approval.

Delivery package

  • GMA 340 audio panel
  • Installation kit
  • Pilot's guide


Physical & Performance:

Unit dimensions, WxHxD: 6.29"W x 1.3"H x 7.12"D (16 x 3.3 x 18.1 cm)
Weight: 1.7 lb (.8 kg)


Telephone interface: tel ringer input, COM3 may be used as keyed (PTT) telephone interface
ICS (intercom system): 6 position intercom (individual VOX circuits for each of the 6 mic positions)
ICS isolation modes: 3 - All, Pilot, Crew
Transceivers: 3 - COM1, COM2, COM3
Additional receiver inputs: 4 - NAV1, NAV2, ADF, DME
Music source input: 2 stereo music source inputs - isolation modes differ from 347
Music input impedance: 460 ohm
Music frequency response: 100Hz - 15kHz
Speaker output: speaker output for radios or PA function (10W into 4 ohm or 8 ohm)
PA function: pilot selectable - dedicated button
Marker beacon: dual sensitivity
Manual squelch: yes
Automatic squelch: no
SmartMute (includes SmartMute marker audio muting): yes
Intercom volume controls: yes
Manual VOX level controls: 2 (pilot, co-pilot/passenger)
MASQ (master avionics squelch processing for noise reduction): yes
Split com (CoPilot transmits and receives on Com2 while Pilot transmits and receives on Com1): yes
Failsafe (connects Pilot PTT, mic and headset to COM1 if unit is turned off): yes
Clearance recorder: no

Related goods and services
KANNAD 406 AS - Survival Cospas Sarsat ELT 121.5/243/406MHz

KANNAD 406 AS - Survival Cospas Sarsat ELT 121.5/243/406MHz
Multi-Purpose Printer Paper for Jeppesen Binders

Multi-Purpose Printer Paper for Jeppesen Binders
Skydrol 500B-4 Fire resistant aviation hydraulic fluid

Skydrol 500B-4 Fire resistant aviation hydraulic fluid
Ljotchik bez puza-samoljot bez gruza

Ljotchik bez puza-samoljot bez gruza