[AMRadio] Globe Champion 350 & HQ-170A

Mike Sawyer w3slk at hughes.net
Sun May 13 18:57:00 EDT 2007

Jim said: The AX 9909s are hard to find and some people tell me they
don't last very long.

Jim is correct IF you transmit prior to letting the AX9909's warm up. Why 
Leo Myerson's crew decided on these tubes is un-beknownst to me. However, I 
have been told that you need adequate warm up time, (roughly 5 min.) to help 
maintain a seal around the pins. All of the pins, including the plate come 
off of the bottom. I guess I ought to get a new low voltage transformer so I 
can return mine to the air.

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