R-158

R-158 (Р-158) is a portable VHF radio transceiver which entered service with the Soviet military in 1979. It was designed for use at platoon level.

Technical specifications

 * Frequency modulation
 * Operating modes: Radio telephone and tone calling
 * Frequency range: 30 - 79.975 MHz
 * Tuning system: PLL frequency synthesis with 25 kHz steps, selected via rotary switches
 * 2000 total available channels
 * Sensitivity (at a signal-to-noise ratio of 20 dB): 1 μV
 * Superheterodyne with two frequency transformations
 * Intermediate frequencies: 1st IF - 11.5 MHz; 2nd IF - 1.5 MHz
 * RF output power: 1 Watt
 * Frequency deviation: 5 kHz
 * Spurious emission suppression: 45 dB
 * Communication range:
 * With AШ-1.5 (Kulikov's pin antenna) - up to 4 km
 * With λ-shaped antenna - up to 10 km
 * Power supply: Nickel-cadmium battery type 10NKGC-1D (10НКГЦ-1Д) at 12 volts, or from a 12 volt vehicle supply
 * Current consumption: Receiving mode 60 mA, transmission mode 580 mA
 * Operating temperature range: -40 to + 50 °C
 * Overall dimensions: 80 х 165 х 263 mm
 * Weight of the radio: 3.6 kg
 * Transistorized circuitry