PTC 414

The UK/PTC-414 is a lightweight 2 wire combat field telephone designed for use within a magneto field telephone system. It is relatively portable and is protected against Electro-Magnetic Pulse and is one of the more modern field telephones used by the cadets.

Power Supply

The PTC-414 can be powered both externally (from within the exchange) or by 4 x 1.5V Primary Cells (C Batteries) giving a combined potential difference of 6 V.

Modes Function Controls

Left Switch (power):

• LB (Local Battery) - Allows the phone to be powered by the internal battery
• STBY (Standby) - Disconnects the internal battery - incoming ringer detector is still enabled
• CB (Central Battery) - The phone is now powered from the exchange

Right Switch (incoming call alert):

• VIS WHISP - Enables the visual alarm and also whisper speech
• VIS - Enables the visual alarm for incoming calls
• LO - Low level audible tone on incoming call
• HI - Normal audible tone on incoming call