Radius GR1225 Repeater
Technical Specifications

 
 

General
VHF UHF
Model Series H5158 or M43GRC H5157 or M44GRC
Frequency Bandwidth 146-174 MHz 444-474 MHz
Channel Spacing Switchable 12.5/20/25/30 kHz
Frequency Separation 28 MHz 30 MHz
Channel Capacity 16 Channels
Dimensions 8"H x 10"W x 14"D (203 x 254 x 356 mm)
Weight 35 lbs. (15.9 Kilos)
Duty Cycle Continuous @25W
50% @45/50W (5 min. on/5 min. standby)
Input Voltage:
Repeater
Transceiver

115/230 Vac+/- 10%
13.8 Vdc +/- 10%

Input Current:
Repeater

Transceiver (13.8Vdc):
Standby
RX@7.5W
TX@50/45W

2.6 Aac (maximum) @115 Vac
1.3 Aac (maximum) @230 Vac
 

0.45 Adc
1.5 Adc
14.0 Adc

12.5 Adc
Squelch Code Capabilities TPL/DPL/CSQ
Transmitter
VHF UHF
RF Output 25-50W 25-45W
Frequency Stability

(-30C to +60C)

±2.5 ppm ±1.5 ppm
Spurs / Harmonics -23 dBm
Audio Response +1/-3 dB
(From a 6 dB/Oct. Pre-emphasis 300 to 3000 Hz)
Audio Distortion <3% EIA
(@1000 Hz 60% rated Maximum Deviation)
Modulation Sensitivity 80 mV (rms for 60% deviation @1000 Hz
FM Noise
12.5 kHz -40 dB
20/25/30 kHz -45 dB
FM Modulation 11K0F3E
16K0F3E
FCC Designation ABZ99FT3023 ABZ99FT4023
Receiver
VHF UHF
Sensitivity (-12dB SINAD) .35 µV (-116.1 dBm)
Internal Squelch (SINAD) 10 dB nominal setting; Adjustable from off to 20 dB
Selectivity 12.5 kHz
-75 dB
20/25/30 kHz
-85 dB
12.5 kHz
-70 dB
20/25/30 kHz
-80 dB
Intermodulation -80 dB
Usable Bandwidth 1.2 kHz 2.0 kHz 1.2 kHz 2.0 kHz
Spur Rejection -85 dB
Image Rejection -80 dB
Audio Output

Internal Speaker
External Speaker

3 Watts
7.5 Watts with 8 Ohm Speaker

Audio Response +1/-3 dB
(From a 6 dB/Oct. Pre-emphasis 300 to 3000 Hz)
Input Impedance 50 Ohms