[Johnson] Fw: Valiant Low Output

[C E]

Hi Brian:
Where are you taking the readings? On an external watt
meter? Cal, N6KYR/8
--- BRIAN ROBERTS <k9vky at verizon.net> wrote:

> 
> 
> Gents:  I have a Valiant that appears to have very
> low output relative to the input power.   With 120
> watts input (200 ma. with around 600 volts HV)  to
> the PA, I'm only seeing 42 watts output.  I'd
> normally expect to see about 60 watts.  Bias and
> screen voltages are all within limits, and the three
> 6146s have been swapped with known good tubes.    I
> thought I was pretty good at keeping these Vikings
> cooking, but apparently not.   Has anyone else seen
> this situation or can you offer any suggestions?  
> Thanks.  Brian K9VKY   (k9vky at verizon.net)
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> 



 
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