Well thanks for everyones comments.
The CAL CUR made a big difference. And after I powered it off and back on,
everything seemed pretty good. Did a partial alignment after that. The radio
draws less with the 100watt running than the 10watt. It is averaging about
2.6 now.
I have excellent power out on 40-160 (115-130 watts). About 95 watts on 20
meters, and is 85 on 10 and 30 but only 75watts on 15 meters. So maybe what
Vic is saying makes sense for my upper bands.
Tom, I am guessing you are right about the parasitic. I still have one
quirk. Goes wild tuning on 40 meters high power. If I run the ATU at low
power it tunes to 1:1 and I can bump the power up to full and its fine !!
73,
Rich
kd0zv
----- Original Message -----
From: "Vic Rosenthal" <[EMAIL PROTECTED]>
To: "Elecraft Reflector" <[email protected]>
Sent: Saturday, March 18, 2006 8:17 PM
Subject: Re: [Elecraft] Problems on 40M with 100 watt section
Rich McCabe wrote:
Time to search the archives. Any comments would be appreciated.
There is a possible problem with some of the resistors that have been
supplied for R19/R20 having a larger than usual inductance; and also
some capacitors at C80/81 being at the low end of tolerance. This
causes the KPA100 to require much more drive on 20/30/17 meters. You
will see normal current draw at 10 watts, but when you have the
amplifier set for 100 watts the driver current will be higher, and it
won't be possible to get full power out.
Gary Surrency <[EMAIL PROTECTED]> has dealt with this problem and can
make suggestions.
Good luck,
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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