[Elecraft] K2 and the KPA100 Power Fluctuation - Another Follow up

[Michael Harris]

G'day,

Another one bites the dust.....  Niggle, that is.

Based on comments read I took the simple route and just removed the bottom
cover extracted R98, trimmed the leads of a 1kohm resistor, dropped it in
place and soldered from the same side.

Confirmed that I could still hit 10W on 10 metres.  Fired up the KPA100 and
bingo, rock steady power.  A good 15 minutes work by any measure.

Anyone without the KPA100 wouldn't understand the hassle factor 'cos it
isn't particularly noticeable with the basic K2.

Regards,

Mike VP8NO (IOTA SA-002)
GQRP 10148
QRP-Canada #57
K2/100 #1400

> As per the Tech Note: "Your goal is to find the largest value of R98
> (up to 1 K) that allows for the desired maximum power output on 10
> meters using TUNE. Try various R98 settings until you find this value."
>
>
> The tech note said to use a 1K max pot but I could not achieve enough
> range, My final measurement came out to be 2.18k, I then installed a
> 2.15k (2.2k that measured out to be 2.15k) resistor in it's place.
>
>
> Closed up the case and the Fluctuation is gone.