[Elecraft] K2 w/KSB CW reverse BFO

Thu Oct 31 22:29:02 2002

The setting of 4000.600 and 3999.400 settings check out the USB and LSB n=
ot CW. When checking CW and CWR you tune 4000.000 and the tone is 600 Hz =
if your side tone is 600 Hz. When you go to sideband there is not an offs=
et so you need to dial in the +/-600 offset to hear the same 600 HZ tone

Don Brown
KD5NDB

----- Original Message -----
From: [email protected]
Sent: Thursday, October 31, 2002 8:06 PM
To: [email protected]; [email protected]
Subject: Re: [Elecraft] K2 w/KSB CW reverse BFO

KC4KGU wrote:

"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.....

...Does anyone see any error in my methodology as described above?"
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
First, I think you meant "LSB at 4000.60" above.  Actually CW and CWR are
"USB" and "LSB" respectively (depending on the band the K2 is on), so
when you refer to "CWR" in terms of both USB and LSB it doesn't make
sense.

I may be wrong, but it sounds like you are adjusting the CW filters
offset by 600 Hz (your pitch preference) from the correct frequency.

An unmodulated carrier on exactly 4000.000 kHz should be heard with a
pitch of 600 Hz when your K2 is tuned to exactly 4000.000 kHz (not to
4000.600 or 3999.400).  If your K2's VFO readout is accurate, it should
read "4.000.00" when that received signal's pitch is 600 Hz, no matter
whether your receiver is on CW or CWR.

73. de Earl, K6SE
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