[Elecraft] K2 w/KSB CW reverse BFO

[email protected] [email protected]
Thu Oct 31 19:40:01 2002


I kinda used Dons settings today with what appear to be great results.

I set all filters to the "defaults" per the K2 + KSB2 manuals.

I then went to WWV at 10Mhz.  With my sidetone set to 600Hz, I used SPOT
in CW mode to zero beat and then verified in LSB that the 600Hz tone that
is present every few minutes and the 500Hz tone likewise were indicated at
the like markers in Spectrogram.

I noted the dial freq error and made adjustment to C22 accordingly.  After
running CAL PLL and repeating this process a couple of times, I got the K2
back to pretty much dead on frequency at 10Mhz.

I then verified that my 10Mhz reference was also dead on (since WWV was
starting to fade on me!) which it was.

I then hooked the 10Mhz reference up to the K2.

I went through and set all of the CW filters watching the spectrogram
display and also using SPOT.  I repeated for CW-R.  While there is a
slight tone difference between CW and CW-R, it tracks identical to my
TS-2000 so, I'm not concerned.

I dialed up 10000.60 on the TS-2000, selected LSB and adjusted all of the
LSB filters to put the beat tone right on 600Hz.

I then dialed up 9999.40 with USB and did the same.

I exited CAL and verified that all modes and filters functioned properly
with my 10Mhz reference.

I then dialed up 4000.00 and verified that CW + SPOT was zerobeat with the
birdy and the I got a 600Hz tone verified with Spectrogram.

I repeated with CW-R, USB at 3999.40 and LSB at 10000.60.

Everything looked right on Spectrogram so, I hooked the K2 to the dummy
load, dialed up 10000.00 LSB on the K2, 10000.00 LSB on the TS-2000 and
listened to myself.  I sounded like me.  A switch to USB produced the same
results.

TX into the dummy load in CW mode on both rigs produced a 600Hz on the
other receiver.  TX into the dummy load in CW-R produced a 600Hz tone on
the other receiver.

So, while my K2 might not be exactly on frequency, it's just as close as
my TS-2000 is at 10Mhz now.

The last thing I did to test alignment was to dial up one of the local AM
broadcast stations.  It zero-beat EXACTLY on frequency in CW mode and both
USB and LSB sounded nearly indentical to each other.

Does anyone see any error in my methodology as described above?


73 de John - KC4KGU
K2/100 #2490