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ID = 32864
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Transmitter Triode, liquid-cooling 
Identical to CAT6
Similar Tubes
Normally replaceable-slightly different:
Other class quality (otherwise equal):
Other characteristic (electr. data):
Multiple differences or of other kind:

Was used by Transmittertube (Radio)
Filament Vf 20 Volts / If 75 Ampere / Direct

Pa <12kW; 21.5kW rf output at <15 MHz.
Operation up to 40MHz is peritted with a reduced anode voltage.

The filament voltage range is 18 to 20 Volt. Each tube has the correct value marked for 10A emission at 90% saturation. The clause 'g' of the CV2871 spec sheet states that the filament voltage for each tube must be measured at 1.6 A emission

The CAT6 was widely used in medium and long-wave broadcast transmitters and also for RF heating applications.

Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   GEC 1963
The Saga of Marconi Osram Valve
Alan Scott Douglas † 16.11.15

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CAT6: GEC's catalogue supplement
Anonymous 413 Collector

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