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GMA 340
 
Specifications
General

TSO compliance:

  • TSO-C50c
  • TSO-C35d
  • using DO-160C, DO-170, and DO-143

Physical Dimensions:

  • Length = 6.4"
  • Width = 6.29"
  • Height = 1.3"

Power Requirements:

  • Supply voltage: 11-33 Vdc;
  • Operating current : 2.2A (13.8V, spkr on)

Temperature range: -20°C to +55°C (normal operation)

Altitude: 50,000 MSL unpressurized

Marker Beacon Receiver

Frequency: Crystal controlled at 75 Mhz

Sensitivity:

  • LO 1000 uV hard
  • HI 200 uV hard

Selectivity:

  • 6 dB @ +/- 10kHz min.
  • 40 dB @ +/- 200 kHz max.

Input impedance: 50 ohms

External lamp drive: 125 mA max each output

Other outputs: Middle MKR sense

Audio Panel

Transceiver inputs: 3

Receiver inputs: 5

Unswitched inputs: 2

Input impedance: 500 ohms

Input isolation: 60 dB min

Intercom

Positions: 6 (pilot, copilot, 4 passengers)

Volume controls: 3 (pilot, copilot, passengers)

VOX level controls: 2 (pilot, copilot/passengers)

VOX circuits: 6 (one per mic input)

Music inputs (stereo): 2 (one input mutable)

Intercom isolation modes: 3 (pilot, crew, all)

Speaker Outputs

Outputs selectable: One, pilot selectable

Output power: 10 Watts into 4 or 8 ohms, any normal supply voltage.

Frequency response: 350 to 6 kHz nom

Special functions: PA Mode, pilot selectable

Headphone Outputs

Output amplifiers: 3, stereo (pilot, copilot, passengers)

Power: 100 mW per stereo channel, each headset, into 150 ohms with not more than 5% distortion, any normal supply voltage.

Frequency response:

  • Music: 100 Hz to 15 kHz nom
  • A/C radio: 100 Hz to 6 kHz nom
  • ICS mic: (Special cabin noise band de-emphasis)

Specifications are subject to change without notice.

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