[Elecraft] Problems on 40M with 100 watt section

[Don Wilhelm]

The problem with the resistors Vic mentioned was a short-lived problem that
reared its ugly head last Summer until the Elecraft folks discovered that
the resistor manufacturer had changed the resistor design, so if your KPA100
was not kitted during that timeframe, you should look for another source of
the problem.

73,
Don W3FPR

> -----Original Message-----
>
> 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 <gary at elecraft.com> has dealt with this problem and can
> make suggestions.
>
> Good luck,
> --
> 73,
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco
>
>