>The recent "amps" discussion of which tube to use for building a new CW
>amplifier started me thinking ...
>If one were building a new amplifier (or buying one of the new commercial
>units) what tube or tubes in the case of a pair would one use? Criteria
>are reliability at 1500 watts output, tube cost, availability of replacement
>tubes if needed in the future and overall relability of the amplifier. The
>100 Amp filaments rule out a "super power" solution like the 4CX5000/8170 or
? Filament-current is a mere 75A. Dahl makes a compact transformer.
Tube handles are mighty nice. 8171s are typically a good buy in the
surplus market. They can be had for under 6-cents per watt.
- later, Joe
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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