Motorola ASTRO 25 GTR 8000 User Manual

NOTICE: The output power reference plane is the output connector of the power amplifier. The
loss of the transmitter output cable (PA output to back of base radio) 3% at 450 MHz. However,
the base radio software allows the transmitter output power to be set at 10% above rated value.
If more than 70 dB Intermodulation Attenuation is required at a site, an external circulator
should be added to the transmitter output.
Table 15: GTR 8000 Base Radio Specifications for IV&D UHF R2 (435–524 MHz)
Receiver Specifications
Frequency Range 435–524 MHz
Modulation C4FM, H-CPM, FM
Analog Sensitivity (12 dB SINAD)
12.5 kHz: -118 dBm
25 kHz: -117 dBm
Digital Sensitivity 5% Bit Error Rate Static
(BER)
C4FM: -118 dBm
H-CPM: -116 dBm
Faded Sensitivity 5% Bit Error Rate (BER)
C4FM: -110 dBm
Intermodulation Rejection 85 dB
Digital Adjacent Channel Rejection 60 dB
Analog Adjacent Channel Rejection (EIA603)
Analog 12.5 kHz
75 dB
Analog Adjacent Channel Rejection (TIA603D)
Analog 12.5 kHz: 50 or 60 dB (adjustable)
Analog 25 kHz: 80 dB
Analog Audio Response +1, -3 dB from 6 dB per octave de-emphasis;
300-3000 Hz referenced to 1000 Hz at line out-
put
Analog Audio Distortion 3% or 5% (adjustable)
Analog FM Hum and Noise
12.5 kHz: 45 dB
25 kHz: 50 dB
Spurious and Image Response Rejection 85 dB
100 dB with preselector
Signal Displacement Bandwidth 1 kHz
Intermediate Frequencies
1st: 73.35 MHz
2nd: 2.16 MHz
Electronic Bandwidth Full Bandwidth
Blocking Immunity 100 dB
MN003286A01-E
Chapter
1: GTR 8000 Base Radio Description
51

Motorola ASTRO 25 GTR 8000 Specifications

General

Brand	Motorola
Model	ASTRO 25 GTR 8000
Category	Radio
Language	English