[Elecraft] KXB3080 problem

[Don Wilhelm]

Jim,

It certainly sounds like you got it fixed even if you don't know why -
congratulations.

You can likely improve the 20 meter output by spreading the green winding on
the LPF inductors a bit, and 80 meters may improve by squeezing the red
turns a bit.  30 meters will normally have more output than the other bands.

Enjoy your trip.

73,
Don W3FPR


> -----Original Message-----
>
> I did check transmit into a dummy load and here's what I get on
> my OHR WM-2
> 80 meters: 2 watts
> 40 meters: 3.5 watts
> 30 meters: 5.0 watts
> 20 meters: 3.2 watts
>
> battery voltage shows 14.1 volts
>
> Interestingly, the same setup showed 5 watts out on both 40 and
> 20 prior to
> the KXB3080 installation.
>
> And, as I was typing this, I decided to hook back up the antenna and see
> what I heard. Well, signals were booming in on 80. Went to each band in
> turn and was able to successfully peak the 40, 30, and 20 meter filters.
>
> So, what did I do? Don't really know. Other than going over everything
> about 10 times (no kidding) and scraping gently at 2 solder
> points that may
> (emphasize may) have been shorting. They didn't really look like
> they were,
> but there was some flux and it was shiny in the light, so I scraped a
> little between them. Don't even remember which ones they were. But, they
> were in the L6 and R1 part of the KX1 board and prolly one of the
> resoldered parts or very close to one.
>
> I'll complete the reassembly. I planned on taking this on a trip
> to TX this
> week and was sweating not having it done in time. Hopefully I won't undo
> what I did do.
>
> Thanks to everyone for putting up with the bandwidth!
>
> Many thanks and 72 to Don. At least having some plan of action kept me
> going when I might have just given up til I got back from my trip!
>
> Jim, WD9HBC
>