RT 415/417

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RT-415 in a combat position under camouflage net (NR-14) .
Antenna mast
Dipole antenna

The RT 415/417 directional radio station was a two-wire or four-wire radio station mounted on a Robur LO 2002 box truck (tactically movable) or stationary (RT 417).

In contrast to the Soviet R-404 equipment set, the equipment set was equipped on a semiconductor basis . The station was used in the NVA telecommunications force . The Richtfunktrupp consisted of a troop leader ( NCO ) and three to four soldiers . The rules of the radio relay service were laid down in service regulation DV 040/0/007.

Components

The equipment set consists of:

  • 2 radios (only one is used for simple terminal operation)
  • 2 multiplex devices (only one is used for simple terminal operation), could be operated remotely from the main station
  • 1 monitoring device (for 6 criteria of the radio equipment, battery discharge, power failure)
  • 1 power amplifier
  • 1 power supply unit
  • 1 NF distributor
  • 2 filters
  • 4 field telephones FF 63 M
  • 2 NiCd batteries (up to 16 h operation without mains voltage)
  • 2 generator sets
  • 3 logarithmic-periodic antennas
  • 1 antenna system (located in the single-axle trailer of the RT 415)

Technical specifications

  • Number of telephone channels: 5 (one in the original position, four supported)
  • Antenna mast height: max. 20 m (only the height required for operation was built up)
  • Antenna polarization: vertical or horizontal
  • Frequency range: 280 to 328.5 MHz
  • Number of radio channels: 98 at intervals of 0.5 MHz (transmitter quartz were carried)
  • Intermediate frequencies : 35.25 MHz and 1.7 MHz
  • Modulation type : FM
  • Pilot signal frequency: 22 kHz
  • Transmit power : 0.5 W (8 W with power amplifier)
  • Range: 50 km

Procedure for unfolding the station

  • Selection of the installation location (sufficient space, favorable sending / receiving conditions, few disruptive factors)
  • Construction of the antenna system (three soldiers on the guy ropes, a squad leader on the mast)
  • Commissioning of the multiplex device (adjustment of the carrier frequency, system call, level)
  • Adjustment of the radio (insert transmitter crystal, adjust power)
  • Alignment of the antenna to the remote station
  • Activation of the telephone connections (field cable lines)
  • Handover of the channels (always with the warning "Warning, you are talking about radio relay!" )
  • Pioneering expansion of the news center (space for units, cover for the station, digging out shooting positions)
  • Camouflage of the construction site (camouflage net, light and sound camouflage)
  • Clarification of the environment (water extraction points, external power supply, create an area map)
  • Organization of operations (work schedule, shift and security duty, defense)

literature

  • Guide for radio operators. On behalf of the Ministry for National Defense of the GDR, Military Publishing House of the GDR, 3rd edition, Berlin 1976, license no. 5, LSV: 0575