[Amps] Running 3-500s upside down

[gdaught6@stanford.edu]

On 16 Mar 2005 at 8:14, Pete Smith wrote:

> I understand that running 3-500s on their side risks internal shorts. 
> I need to do some trouble-shooting on my modified SB-220's relay/bias
> switching circuit, however, which would be much facilitated if I could
> key but not drive the amp (no RF out) with it upside down.  I can pull
> the tubes if I need to, of course, but would prefer not to.

The Eimac data sheet for the 3-500z says "Operating position: 
vertical, base up or base down."  

73,

George T. Daughters, K6GT