R-123

R-123 "Magnolia" (Р-123 «Магнолия») is a Soviet military HF/VHF radio transceiver designed for use in tanks and other armoured vehicles. The device was made in the Ryazan radio plant.

The R-123 set was commonly used in conjunction with the R-124 intercom system in armoured vehicles. Introduced in the early 1960s, the R-123 set was also adopted by other Warsaw Pact members and exported to countries such as Finland, Egypt, and Iraq.

• FM, superheterodyne radio transceiver. Circuitry consists of 32 valves and various semiconductor devices.^[1]
• Tuning system: In addition to manual tuning, up to 4 preset channels can be selected using a motorized servo system.^[1]
• Frequency range:
  • Band 1 = 20.00 - 35.75 MHz
  • Band 2 = 35.75 - 51.50 MHz
• Channel spacing: 25 kHz ^[1]
• 1,260 total available channels
• Transmitter power: 20 W ^[1]
• Range: 20 km
• Antennas:
  • Tank rod antenna: 4 m
  • Telescopic antenna: 6 m
• Operating temperature range: -40 to +50 °C
• Dimensions: 428 × 225 × 178 mm
• Weight: 25 kg

• Transistorized inverter
• Input voltage: 26 V
• Output voltages: + 1.2 V, + 6.3 V, + 150 V, - 150 V, + 250 V and + 600 V ^[1]
• Dimensions: 210 × 164 × 218 mm
• Weight: 7 kg

• https://www.radiomuseum.org/r/riazan_magnolia_r_123r_12p_12.html