[Amps] 160 efficiency problem

[2]

>N3300   3 amps @1mhz      400pf   quantity 4     7.5kv
>
€  Tnx.  This type of dielectric is not rated for tuned circuit applications, however it works ok for bypass and coupling applications.  For 1.8MHz padders, 2000v mica caps are good.  See Cornell-Dublier Web site for the nitty gritty.

cheerz
>
>Lynn   NO9Z
>
>
>
>2 wrote:
>
>> >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) ,
>>
>> €  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
>> >
>> >
>> >
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>>
>> Rich, AG6K, 805-386-3734, www.vcnet.com/measures
>
>


Rich, AG6K, 805-386-3734, www.vcnet.com/measures