[Amps] 3-500Zs inverted

[RMorris]

Don't forget to change the rotation of the fan and switch to the other sideband.....

Sent from my iPad

On Apr 3, 2014, at 9:19, Pete Smith N4ZR <n4zr at contesting.com> wrote:

> 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?
> 
> -- 
> 73, Pete N4ZR
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