[AMPS] Upside down SB-220

[Pete Smith]

Is there anything wrong with operating an SB-220 upside down while (I hope
briefly) trouble-shooting a problem under the chassis?  I would not be
drawing more than idling cathode current, but am concerned about the
filaments of the 3-500s.

73, Pete Smith N4ZR
n4zr@contesting.com 

Sometimes a tower is just a tower

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