R-106

is a Russian backpack radio. It belongs to the first radio generation that was imported from the USSR to the GDR (1956).

It was used for communication between commanders of tank units and their soldiers in the field.

It was the last radio that used the AM mode; and was replaced by FM- radios R-105, R-108 and R-109.

The ?? Pendelaudion ?? used jammed nearby radios very much, especially when transmitting. So to avoid interference, the distance between two radios must be 5m when receiving and even 80 m when transmitting.

It uses six tubes, while three of them have a double function.

The housing consists of plastic and has two chambers for the transceiver and the battery 2NKN24. The lid is water protected.

Frequency range:

41.6 ... 48.65 MHz

HF- output:

750 mW

Mode:

AM, simplex

Channels:

18

Channel spacing:

150 kHz

Range:

1.5 km

Sensitivity:

10 µV @ 15 dB and 50% modulation

Antennas:

Kulikoff rod antenna 1.5 m

Long wire antenna 30 m

Powered by:

Battery 2NKN24 : 2.4V, Vibrator WS-2,4

(provides 130 V anode voltage the transceiver final stage,

and 115 V for the other tubes.).

Power consumption:

Transmitting/receiving: 2.6 / 1.6 A

Operation per battery charge:

12 hrs

Measurment and weight:

300 x 145 x 225 mm; 10.8 kg

Issued:

1956

Used until:

1962