[Amps] 160 efficiency problem

[Lynn]

N3300   3 amps @1mhz      400pf   quantity 4     7.5kv


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