P-301 “Topaz” - sealing equipment (channel-forming equipment) of P-296 long-distance communication cables. It is also intended for sealing radio-relay lines with 24 telephone channels, and allocating up to 12 telephone channels from each transmission direction. It was developed in 1961-1972, since 1974 it has been adopted for service. This series also includes compaction equipment of types P-300, P-302 and P-303 [1] . The next in the lineup was equipment of the P-330 type .
Content
Highway Composition
- Channel-forming equipment of terminal stations P-301-0
- Equipment of served amplification points (OUP) P-301-P
- Equipment of maintenance-free amplification points (NUP) P-301-NUP
- Channel isolation equipment P-301-V
Power Cable Features
- Maximum communication range: up to 1000 km
- 6 maintenance-free booster points
- The length of the amplification section: 5 - 10 km
- Regulation section length: 70 km
Hardware Features
Physical
- Weight: 800 kg
- Preparation for work after switching on: 30 min.
- Power supply at a frequency of 50 Hz and a voltage of 220 V
- Temperature range: -10 C to + 50 ° C, relative humidity 98% at temperatures up to + 35 ° C
Technical
- Single cable four-wire line with frequency multiplexing
- 24 channel PM
- Linear frequency spectrum: 12.3 - 107.7 kHz
- Line path input impedance: 135 ohms
- Reference frequencies 16, 64 and 104 kHz
- Effectively transmitted frequency bands:
- KTCH: 0,3 - 3,4 kHz
- ShK-12: 12.3 - 23.4 kHz
- ShK-48: 60 - 108 kHz