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CV89 interdigital magnetron (related to CV79 which is a frequency variant). This generates about 300mW at 6.3cm (4.76GHz).

The CV79 and CV89 were used in Wireless Set No.10, which played an important part in the WWII D-Day landings. This was a trailer mounted installation, using pulse modulation to enable 8-channels (e.g. 8 phone lines) over a 50 mile (optical) path. The associated receiver made use of the CV90. The Mk. II version used two CV228 Heil tubes in the transmitter instead of the CV79 or CV89.

Heater voltage6.3V
Heater current300mA
Max anode dissipation8.5W
Magnetic field strength (approx)670H
Frequency4762MHz
Nominal output200mW

PinFunction
1Heater
2n/c
3Anode
4n/c
5n/c
6Heater/cathode
7n/c
8Anode
9n/c
CV89
CV89 box

This file was last modified 18:42:15, Wednesday May 18, 2016