Gene -- The suppressor retrofit kit is absolutely, positively, 100%
free if it does not solve the arcing problem and reduce the 28MHz power
output by c. 2%. Cheers and good luck.
On Mar 19, 2005, at 4:02 AM, Gene Bigham wrote:
> Mr. Measures suggested there was a VHF parasite occurring leading to
> the arc. I sent him a picture of the parasitics in this amplifier.
> They are constructed of silver plated strap coiled around a couple
> large resistors with three turns of the strap material. They are
> impressive looking even if they are ineffectual. Allegedly the
> parasitics are too high Q for VHF in this amplifier. So I am looking
> at applying a different form of parasitic suppressors on the 3-500zg
> anodes which has a lower Q at VHF. The idea here is the amp forms a
> VHF parasite which then jumps the band switch at the narrowest gap.
> If anyone else would like a look see at the picture I would be happy
> to send it to you. Mr. Measures has offered to send me a kit to
> replace the parasitics, for which I am grateful. Especially if this
> will cure a long standing issue with this amplifier. I have received
> the new band switch and roller inductor tuning coil assemblies. It is
> my hope to iron out the problems a
> s I renew the top end of this RF engine.
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|