[Amps] Need Smarter Than I Am Help.

[Adrian]

i see sense in your comments here Rob, but am curious on why the IMD 
spec would be worse ?

Apart from correct biasing and build quality, I was always under the 
impression that more voltage and less current,

for the same power usually gave a better TX IMD result in this 
application if the tube supports it?

Please explain why that would not be the case ?

73

Adrian Fewster



On 11/10/21 7:49 pm, Rob Atkinson wrote:
> Why do some of you guys want to jack up the plate v. on your 3-500s?
> The power difference won't be noticed and you'll create a cascade of
> problems.  You still have the same plate dissipation and plate current
> limits.  The pi network won't work, the DC blocking caps may become
> marginal, the power supply filter cap bank may get stressed and the
> IMD spec. gets worse.  If you want to jack up the B+ get a 3-1000Z.
>
> 73
>
> Rob
> K5UJ
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