input vs output power

[Heinz und Hannelore Breuer]

> Why is it that tube xmtrs are rated by input power, and SS xmtrs by
> output power? Is it that SS rigs are expected to be operated into
> a fixed impedance, but no such expectations accompany tube rigs?
> (Of course, that's not true - many tube rigs terminate with an
> SO-239 connector, unless it's a Heath!)
> Jeff KH2PZ (22-year General still asking Novice questions)


Although the Bird 43 is around for more than 50 years now it was not
a standard station accessory back then. Input power was choosen because
it could be calculated from plate voltage and current and every ham could
measure these.
73
Heinz - KF6FNC

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