[Amps] 4CX400 Rattles...GU34B Data

[Richard]

>Hi...
>
>I'm chasing some info on a 4CX400 I have just bought..it "ratles" when
>inverted...as if something is sliding up and down inside the tube. Is this
>normal, or do I have a dud?

Does it rattle when the heater is up to normal operating temp.?  
>
>The tube marked rc-36b, which I was told is the military equivalent.
>
>I also have a GU34b...it doesn't rattle, but I'm after any data anyone may
>have on its use at 2 Meters.
>
>Thanks in anticipation....
>
>Glenn
>VK4TZL
>
>
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-  R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, 
www.vcnet.com/measures.  
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