[Elecraft] K2 bandwidth modification issue

[Don Wilhelm]

Steve,

How does the OP1 filter passband look when viewed on Spectrogram? It 
should show a nice flat passband.  If it has a dip or valley in it, look 
for a bad connection on one of the capacitors or crystals.

What is the possibility that you damaged one of the thru-plated holes 
when removing the old crystals and capacitors.  Use the schematic to 
determine 'which is connected to what' and check all those connections 
with your ohmmeter.

You may also have a problem with T1 or T2 soldering or a poor solder 
connection in the switching diodes or R-Paks.  Re-flow the solder in 
those areas with a hot (750 degF) soldering iron.

73,
Don W3FPR

On 2/10/2014 2:30 AM, Steve Garwood wrote:
> Hello!
>
> I am working on a K2,  <3000 s/n in which I installed the K2 SSBCAPKT along with the 14 crystal kit.
>
> Receive is working, audio level is low on the OP1 filter, normal on FL1, etc.
> I have transmit, with good audio, however, no measurable power output or ALC reading.
>
> I've been searching for something similar to this, no luck so far.....
>
> It seems that the filter output is low, but functioning.....  Alignment addresses adjusting BFO frequency, but nothing about output level.
>
> I checked soldering again, but I have not made it any further than this....
>
> Any ideas?
>
>