PRT-37

was an attempt by Telefunken to enter military grounds- they did not succeed. This model comes in two Variants:

PRT-47 : 47 ... 57 MHz.
 

PRT-37 or PRT-47 (Click picture to enlarge)

It seems that this version was meant for authorities. The connector on the front is the same as used with FUG-10.
The radio here was built as PRC-37 and was changed to a PRC-47.

Description of operational elements and programming
of PRT-37 / PRT-47 see (click): HERE

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There also are models
PRT-37D / PRT 47D ;
they are more rugged and watertight.
 

PRT-37D or PRT-47D (Click picture to enlarge)

It looks like this version was meant for military use: the connector on top is the same as used with SEM-52SL and SEM-70.

Description of operational elements and programming
of PRT-37D / PRT-47D see (click): HERE

Frequency range:

37 ... 47 MHz or

47 ... 57 MHz

 

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Technical data:

Channels:

400

Channel spacing:

25 KHz

HF output:

0.25 / 1 W

Memory:

3 programmable channels

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9.6 V battery; 12 V cell holder (known so far)