190-01182-02 GTR 225/GNC 255 TSO Installation Manual
Rev. B Page 1-3
1.3.3 Display
The display on the GTR/GNC is a sunlight readable LCD display.
1.3.4 COM Specifications
1.3.4.1 COM Transmitter Specifications
Characteristics Specifications
Display Size
Width: 3.46” (88.0mm)
Height: 0.843” (21.4mm)
Active Area
Width: 2.95” (74.98mm)
Height: 0.486” (12.36mm)
Resolution 200 x 33 pixels
Viewing Angle
Left: 45
Right: 45°
Up: 10
Down: 30
Characteristics Specifications
Classes 3, 4, 5, 6
Microphone Input
Two inputs, standard carbon or dynamic mic with integrated preamp
providing minimum 70 mVRMS into 1000 Ω load
Modulation Capability 85% with 100 to 1000 mVRMS microphone input at 1000 Hz
Modulation
AM Double sided
Emission Designator:
6K00A3E (118 - 136.975 MHz)
5K60A3E (118 - 136.992 MHz)
Frequency Range
118.000 to 136.975 MHz, 25 kHz channel spacing
118.000 to 136.992 MHz, 8.33 kHz channel spacing
Frequency Tolerance +/-2ppm from -40°C to +70°C
Output Power
10 Watt Mode: 10 watts minimum
16 Watt Mode: 16 watts minimum
Duty Cycle
10W: 100%
16W: Recommended 25% (5 seconds on/15 seconds off,
15 seconds on/45 seconds off, etc.)
Carrier Noise Level At least 35 dB (SNR).
Stuck Mic Time-Out 30 seconds time-out, reverts to receive
Demodulated Audio Distortion
Less than 5% distortion when the transmitter is at 85% modulation
at 350 to 2500 Hz
Sidetone 1.4 Vrms into a 500 Ω load