Repeater radio station assembly URR-4
Descriptions
Technical parameters
Descriptions
URR-4 is designed to organize the work of radio stations in two modes:
- radio station;
- repeater.
URR-4 is intended for use in conjunction with engineering communication system “Channel-T” and data communication system “Stream-2".
Technical parameters
| Impedance from the communication line | 600 Ohm ±10% |
| Transmitter triggering | |
| line signal | with voice |
| PC signal | SQ level |
| Transmitter off delay when the voice signal from the line was lost | minimum 1 sec |
| The level of the output to the communication line | -13 dB/+4 dB |
| Acceptable input range | -20 dB to +10 dB |
Indication
| The level of the input from the communication line | |
| Radio station signal level | |
| Radion station starting | |
| Radio station/repeater operation mode |
Receiver
| Number of frequency channels | 8 |
| Frequency band | (134 to 160) MHz |
| Channel spacing | 12.5 kHz |
| Frequency stability | ±2,5 ppm |
| Sensitivity (12 dB SINAD) | 0.20 µV |
| Antenna impedance | 50 Ohm |
TRANSMITTER
| Output power | 10 W |
| Frequency stability | ±2,5 ppm |
| Noise level | 45 dB (25 kHz) |
| Harmonic distortion | less than 5% |
| Receiving and transmitting radio station operate to one antenna via duplex filter | |
| Temperature range | −30 to +60ºС |
| URR power supply voltage | 220 V mains |