[AMRadio] Globe Champion 350 & HQ-170A


KA5MIR ars.ka5mir at gmail.com
Mon May 14 00:37:11 EDT 2007


Good question!  Does anyone know of ANYTHING else that used an AX9909?
I wonder if Amperex built them for some military project that fell through 
and the whole lot got sold to WRL for a song?  Who else would want a tube 
that doesn't fit anything?

Kent/KA5MIR

> Why Leo Myerson's crew decided on these tubes
> is un-beknownst to me.  


On Sunday 13 May 2007 05:57:00 pm Mike Sawyer wrote:
> 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.
> Mod-U-Lator,
> Mike(y)
> W3SLK


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