>> Yesterday I added 1600pf (4 doorknobs) to the base of the plate
>> choke and noticed a
>> significant change in output as well as stability. It seems the larger
>> metal tubes
>> require more bypassing than found in some of the other designs.
>
>
>All 160 meter amps need this, Lynn. It is just not as obvious at low power.
>You need 8000-10000 pf at the base of the plate choke for 160, especially
>if you
>are using a string of electrolytic capacitors in the HVPS. I use 10,000pf
>@ 10kv
>disk ceramics by Sprague here.
? Amen, Phil. Ameritron's 1000pF of +HV bypass C is clearly not good
engineering practice below 10MHz..
>
>(((73)))
>Phil, K5PC
>
>
>
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Rich, AG6K, 805-386-3734, www.vcnet.com/measures
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