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Apollo GX50/60/65 Installation Manual
37
COMM RECEIVER PERFORMANCE (GX60/65 ONLY)
Class ......................................................... D
Frequency range ....................................... 118.000 to 136.975 MHz, 760 channels
Sensitivity................................................. 1µV (2µV hard) for 6dB S+N/N with 30%
modulation at 1000Hz
Selectivity................................................. < 6dB variation at ± 7 kHz, > 60dB at ± 22 kHz
Speaker audio output level ....................... 12 watts into 4Ω, 8 watts into 8Ω
Headphone audio output level.................. 280 mW into 100Ω, 120mW into 500Ω
Distortion.................................................. < 5% at rated output at 1000 Hz
AGC characteristics.................................. < 3dB variation in audio output from 5µV to
100mV input, 15% to 90% modulation
Squelch control......................................... Automatic squelch with manual override
COMM TRANSMITTER PERFORMANCE (GX60/65 ONLY)
Class ......................................................... 4
Output power............................................ 8 watts minimum carrier at >12VDC input,
6 watts minimum at 10VDC input (transmit is
locked out below 9 volts input)
Frequency range ....................................... 118.000 to 136.975 MHz, 760 channels
Frequency tolerance.................................. ±15ppm from -20°C to +70°C
Microphone input ..................................... Two inputs, standard carbon or dynamic mic with
integrated preamp providing minimum 70mV rms
into 1000Ω load
Modulation capability............................... 85% with 100mV to 1000mV rms microphone input
at 1000 Hz
Audio frequency distortion....................... < 10% at 85% modulation at 350 to 2500 Hz
Audio frequency response ........................ < 4 dB variation with 350 to 2500 Hz, 85%
modulation
Carrier noise level .................................... > 35 dB down
Sidetone output......................................... up to 280 mW into 100Ω, 120 mW into 500Ω
Duty cycle................................................. 100%
Stuck mic time-out ................................... 35 second time-out, reverts to receive