Small decimeter station; manufactured by Hasler AG, Bern.

In 1941, a low power radi oset operating in the UHF range was developed by the Bern based company Hasler AG and was introduced with the troupe in 1942/3 after some problems with the early sets have been cured. Since the device with the odd-shaped antenna could only used for point-to-point - coommunication in optical distance, it was used only in isolated occasions.

• Principle: transceiver
• Modes: AM (A3)
• Frequency Range: 440 - 520 kHz, tunable
• Sensitivity: AM (A3) / Selectivity:

• Accumulator / batteries: Accumulators
• Generator: pedal generator

• Standard antenna is a double - quad antenna

The manpack set is built into a sheet steel cabinet, it can be operated with an accumulator pack or from a pedal generator.

The double-quad antenna is plugged in the socket on top of the cabinet. A canvas pocket is used to store the accessories, the hand microphone, throat microphone and the headphones.

The few control elements are located on the right front side, the measuring instrumentcan be set co control the valve heaters and plate voltage.

After in 1938 experiments with a decimeter device made by the German company Lorenz, it was apparently the „Elster“ set, had been done, the KTA in 1941 made a contract to construct a portable one - channel decimeter set with Hasler AG in Bern.

From the decimeter station „K Dm“, 42 sets of tha manpack variant with internal designation H223b and 30 sets of a slightly bigger but technically largely identical set with the internal designation H249 in a die-cast housing for use in fixed installations in fortresses „(K-Dm fortress“) were acquired.

The „K-Dm“ decimeter station was introduced with the troops in 1942/3 and came out of service around 1950.

The manpack station was used by Fk Kp, the K-Dm fortress station with it's remote double quad antenna for fixed connections between artillery bunkers. In 1978, this material was also liquidated.

Almost at the same time, Brown Boveri got a contract to develop the higher powered decimeter station „TLD“ ("Portable Light Decimeter"). Because for this microwave station only a very small number of multi-channel interfaces were acquired, this station met hardly any higher requirements than the „K-Dm“, so even this station was mainly used for individual „point-to-point“ connections.

SE-111 / K-Dm

SE-111 / K-Dm

SE-111 / K-Dm: a) Bedienelemente

SE-111 / K-Dm: b) Zubehör

• none available

• SE-111 / K-Dm auf www.armyradio.ch