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CV79 interdigital magnetron
(related to CV89 which is a frequency variant).
This generates about 300mW at 6.6cm (4.55GHz).
The CV79 and CV89 were used
in Wireless Set No.10 Mk.I, 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 voltage | 6.3V |
| Heater current | 200mA |
| Max anode dissipation | 8.5W |
| Magnetic field strength (approx) | 650H |
| Frequency | 4547MHz |
| Nominal output | 200mW |
| Pin | Function |
| 1 | Heater |
| 2 | n/c |
| 3 | Anode |
| 4 | n/c |
| 5 | n/c |
| 6 | Heater/cathode |
| 7 | n/c |
| 8 | Anode |
| 9 | n/c |
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 The 'interdigital' name
comes from the nature of the fingers shown in this picture. |
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