Page 4-4
G900X/G950 Installation and Maintenance Manual – GIA 63W
Revision D
190-00719-00
4.2.2 COM Transceiver Specifications
Table 4-2. GIA 63W COM Transceiver Specifications
Characteristics Specifications
Audio Output
100 mW minimum into a 500
Ω
load.
Audio Response
Less than 6 dB of variation between 350 and 2500 Hz.
Audio Distortion
The distortion in the receiver audio output shall not exceed
25% at all levels up to 100 mW.
AGC Characteristics
The audio output shall not vary by more than 6 dB when the
level of the RF input signal, modulated 30% at 1000 Hz, is
varied from 5
μ
V to 100,000
μ
V (hard).
Sensitivity
(S+N)/N on all channels shall be greater than 6 dB when the
RF level is 2
μ
V (hard) modulated 30% at 1000 Hz at rated
audio.
Squelch
2
μ
v (hard)
±
6 dB for 25 kHz channels.
3
μ
v (hard)
±
6 dB for 8.33 kHz channels.
Selectivity
6 dB BW is greater than
±
8 kHz for 25 kHz channeling.
60 dB BW is less than ±25 kHz for 25 kHz channeling.
6 dB BW is greater than ±2.778 kHz for 8.33 kHz
channeling.
60 dB BW is less than ±7.37 kHz for 8.33 kHz channeling.
Spurious Response
Greater than 80 dB.
Transmitter Power
At Least 16 watts.
Transmitter Duty Cycle
Recommended 10% maximum.
Modulation Capability
The modulation shall not be less than 70% and not greater
than 98% with a standard modulator signal applied to the
transmitter.
Carrier Noise Level
Shall be at least 45 dB (S+N)/N.
Frequency Stability
0.0005%
Demodulated Audio Distortion
Less than 10% distortion when the transmitter is modulated
at least 70%.
Sidetone
1.4 V
RMS
into a 500
Ω
load when the transmitter is
modulated at least 70%.
Demodulated Audio Response Shall be less than 6 dB when the audio input frequency is
varied from 350 to 2500 Hz.
