K2, Freq readout

[pc5m, Carel]

Struggling to get the freq readout of my k2 correct (using various methods
as described on w3fpr's website).

 

Now I am doubting everything (including myself..) so, but to be sure..

 

What should the readout on the K2 displaying, If I had a carrier at 10.000
MHz and tune it in CW, USB and LSB to have it at 600 Hz tone (equal to my
spot tone) ?

 

Thanks in advance,

 

Carel.

 

 

 

 

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[Ron D'Eau Claire-2]

Carel asked:

What should the readout on the K2 displaying, If I had a carrier at 10.000
MHz and tune it in CW, USB and LSB to have it at 600 Hz tone (equal to my
spot tone) ?

----------------------------

10.000 MHz in each case, if everything was perfect, and you are not trying
to get a 600 Hz beat (tone) with the carrier in USB or LSB. In USB or LSB
you should hear nothing without modulation on an AM signal like WWV. The BFO
is "zero beat" with the carrier in that case. The dial will read 10.000.

In CW, normal or reverse, it should read 10.000 when you are tuned to
produce a beat note equal to your sidetone - 600 Hz in your case.

Of course, the K2 frequency display is seldom perfect for various reasons. A
well aligned K2 might read 30 Hz or so off after a decent warm up. That
error may shift a little bit as you change from CWn to CWr or USB to LSB
because each of those modes involves changing the BFO frequency, and the
dial accuracy depends upon how accurately the BFO frequency is set in each
case.

 
Ron AC7AC

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[n6wg]

Carel
If you listen to WWV, or some other equally accurate signal, with
no modulation, just pure carrier, you should be right on 10.000 IF
you are zero beat with your SPOT tone in CW, or are zero beat in
SSB mode.  It is easiest to check for zero beat in ssb by switching
back and forth between LSB and USB until both sound the same when
there is AM modulation on the signal.
Good luck and 73
Bob N6WG

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]]On Behalf Of pc5m, Carel
Sent: Sunday, April 30, 2006 9:01 AM
To: [hidden email]
Subject: [Elecraft] K2, Freq readout


Struggling to get the freq readout of my k2 correct (using various methods
as described on w3fpr's website).

 

Now I am doubting everything (including myself..) so, but to be sure..

 

What should the readout on the K2 displaying, If I had a carrier at 10.000
MHz and tune it in CW, USB and LSB to have it at 600 Hz tone (equal to my
spot tone) ?

 

Thanks in advance,

 

Carel.

 

 

 

 

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[Dave, G4AON]

Carel

My K2 showed a +5 Hz and -30 Hz error after alignment, there's a table
of the errors halfway down the page at:
http://www.astromag.co.uk/k2/

As others have said, the design limits the absolute accuracy of the K2's
frequency setting.

73 Dave, G4AON
K2 #1892


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