The C45 is physically identical and works on the lower range of 26 - 38 mHz.
The C13 is a HF set of the same physical dimensions but completely different electrically. All 3 units are designed to use the same harnesses.
These sets were used in Centurion Tanks and Land Rovers FFR (Fitted For Radio).
It was introduced as a replacement set for the No l9 transceiver, during the period 1955-60. Many of the units are dated 1959.
There are 3 units - the radio, (Wireless Set C42) , a power supply (2 types - 12 or 24 volt: Supply Unit Vibratory No 12) and an aerial tuning unit (No 6).
Transmit power is 15 watts (HIGH) and .25 watts (LOW).
Automatic level control is used on transmit and the receiver features selectable squelch. (A bulb lights when a signal is received.)
Also included is an intercom amplifier for use of the crew in the vehicle.
Automatic rebroadcast is available if the set is coupled to another transceiver.
The average range, set to set, is 3-4 miles on LOW and 10-15 miles on HIGH, using 8' rod aerials.
SEND HP 8.0 amps 17.8 amps
SEND LP 5.5 11.8
RX TRAFFIC 4.6 10.8
RX STANDBY 3.7 7.8
The set features a variable voltage harness,which selects the high voltage tap with input voltages of 25.5 - 29.0 volts, or the low voltage tap between 20.7 - 25.5 volts.
Operating voltages are 175v for Rx and Tx (LP) and 350 v for the Sender on high power. All valves operate on 6.3v filaments, with the exception of the sender filament, which works on l2 volts.
AERIALS: The standard aerial is 8' long consisting of 2 4 foot sections. An elevated aerial, mounted on a. 27' mast is used for base applications.
The all up weight of the units is 86 lbs.
© Ian O'Toole, 2009. Page created: 28/04/03 Last updated: 4/12/2009