Pete asked...
> I need to trouble-shoot my QSK system, which is built into my
> SB-220.
> Will it do any harm to apply filament and plate voltages, but no
> drive,
> to the 3-500Zs in the inverted position for a few minutes at a
> time?
Going to the authoratative scriptures, the Eimac data sheet says "The 3-500Z
must be
operated vertically, base up or base down."
73,
George T Daughters, K6GT
CU in the California QSO Party (CQP)
October 4-5, 2014
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