Hamble Marine Radiotelephone PM125

The PM125 Hamble was a marine HF transmitter-receiver intended for voluntary installation in boats and yachts which were subject to the British Post Office Marine regulations.

Single or double frequency simplex with direction-finding capabilities.

The equipment had a transistorised, tunable receiver and an 8-channel crystal-controlled transmitter in separate cabinets.

The RF power output was 20 Watts AM or CW into 50 Ohms.

The internal power supply was also transistorised. A rotatable ferrite bar antenna for direction finding was mounted on the top of the cabinet.

The frequencies covered were 150-400 KHz, 535-1605 KHz and 1.6-3.8 MHz. Reception of the Consol navigation system signals was possible with the equipment.

12 Volt and 24 Volt DC-powered versions were available.

(Information courtesy of The Pye Museum)

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