Bernie,
First, check all the capacitor values in the Low Pass Filter area. Then
count your turns on both L1 and L2 - count the number of turns that
pass through the center of the core, counting on the outside may result
in an error of 1 turn.
You can adjust the spacing of both L1 and L2 to achieve the proper power
output relationship, but do check the capacitors and re-check your
soldering in the LPF area.
73,
Don W3FPR
Bernie Gardner wrote:
I have just completed KX1 1804. (Can't quite justify a K3 at this point but
needed something to supplement the K2...) It's a great kit and I look
forward to using it. There is one problem at the final checking stage.
Everything seems to work as expected except I can't get the 20m output to be
less than the 40m output as described in the manual. When I first checked
(with a 12v supply) I got about 3.6watts on 20m and 3.1 on 40m. I adjusted
the turns on L2 per the manual, but that seems to reduce output on both
bands. At the most extreme 'squeeze', I got ~2.7watts on 40m and 3.1 watts
on 20.
Everything else seems correct.
Any suggestions greatly appreciated!
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