http://elecraft.85.s1.nabble.com/K1-won-t-transmit-on-band-2-tp6886706p6887664.html
> Pete,
>
> Can you receive a signal that is known to be on 20 meters?
> That is an important first step. It is possible to mis-tune the
> Pre-Mixer bandpass filter so that the K1 can receive signals, but they
> may not be in the 20 meter band.
> If that happens, then the transmit signal will not get through the Low
> Pass Filter which has a cutoff frequency just above the 20 meter band.
>
> If you have another transmitter capable of producing a 20 meter signal,
> feed it into a dummy load and put a "hunk of wire" antenna on the K1 and
> place that antenna near the dummy load to pick up the signal.
>
> 73,
> Don W3FPR
>
> On 10/12/2011 4:58 PM, Pete Parisetti wrote:
> > Hello list,
> >
> > I have happily finished the building of my 2 band (30/20) K1. Everything
> > works fine, except that the TX won't work on band 2. I am not even able
> to
> > set power output past 0.1. I have checked and re-checked for obvious
> > culprits, but couldn't find any.
> >
> > Grateful for any wisdom on where to look further.
> >
> > 73 Pete
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