[Amps] 160 efficiency problem

[Dennis]

What is the inductance of the plate choke??
How big are the plate choke by-pass caps??

Dennis    W7JX

Lynn wrote:

>N3300   3 amps @1mhz      400pf   quantity 4     7.5kv
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>Lynn   NO9Z
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>2 wrote:
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>>>Hello,
>>>
>>>   I am almost finished with the new homebrew yc156 amp.
>>>It works fine on 15 - 80 meters but I am having a problem with
>>>160.
>>>
>>>    With 5000 watts in, I am getting about 1200 watts out.
>>>
>>>  I have added inductance to the plate and cathode chokes,  changed
>>>(padder caps for the load to 400 pf/ 7.5kv) ,
>>>      
>>>
>>EUR  Please describe padder caps and give RF current rating at 1MHz.  tnx
>>
>>    
>>
>>>and setup the tank
>>>several
>>>times.     The blocking cap is a 1900 pf .
>>>
>>>   THe other sympton is that grid current is much higher on 160 than
>>>all the other bands.
>>>
>>>what am I missing?
>>>
>>>TIA for any assistance
>>>
>>>Lynn  NO9Z
>>>
>>>
>>>
>>>_______________________________________________
>>>Amps mailing list
>>>Amps at contesting.com
>>>http://lists.contesting.com/mailman/listinfo/amps
>>>      
>>>
>>Rich, AG6K, 805-386-3734, www.vcnet.com/measures
>>    
>>
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