Com Specifications (Gtn 635/650 Only) - Garmin GTN 625 Installation Manual

1.3.5

COM Specifications (GTN 635/650 Only)

1.3.5.1 COM Transmitter Specifications
Characteristics
Classes
Microphone Input
Modulation Capability
Modulation
Frequency Range
Frequency Tolerance
Output Power
Duty Cycle
Carrier Noise Level
Stuck Mic Time-Out
Demodulated Audio Distortion
Sidetone
[1] Applies to 28V systems only.
GTN 625/635/650 TSO Installation Manual
Page 1-6
3, 4, 5, 6
Two inputs, standard carbon or dynamic mic with integrated preamp
providing minimum 70 mVRMS into 1000load
85% with 100 to 1000 mVRMS microphone input at 1000 Hz
AM double-sided
Emission Designator: 6K00A3E (118 – 136.975 MHz)
5K60A3E (118 – 136.992 MHz)
118.000 to 136.975 MHz, 25 kHz channel spacing
118.000 to 136.992 MHz, 8.33 kHz channel spacing
+/-2ppm from -40°C to +70°C
10 Watt Mode: 10 watts minimum
16 Watt Mode: 16 watts minimum [1]
100%
16W: Recommended 25% (5 seconds on/15 seconds off, 
15 seconds on/45 seconds off, etc.)
At least 35 dB (SNR).
30 seconds time-out, reverts to receive
Less than 5% distortion when the transmitter is at 85% modulation at
350 to 2500 Hz
1.4 Vrms into a 500 load
Specifications
190-01004-02
Rev. F