KX-1 Precise Alignment

[Coote, Jay]

Going over the KX-1 manual, it calls for aligning first the BFO and then
the DDS by dialing in a strong carrier (WWV, etc) and then using the BFO
or DDS menus.
Can someone suggest some alternate alignment methods?  I have a
calibrated freq counter and service monitor.

Thanks,
Jay
W6CJ
#1204 KX1
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[David F. Reed]

Jay,

to some degree, there is the metrology question of "how accurate are
your reference sources?"; in the case of using WWV of course, it is
extremely accurate (beyond both my resolution and accuracy capabilities).

To what accuracy and resolution are the frequency counter and service
monitors calibrated, and are they NIST traceable?  WWV is....

Of course, it is a moot point if you cannot receive WWV from there, right?

One way of getting better than "ear" on their method is to use a scope
to measure the beat note, and really go for "zero"; my hearing fades so
the best I could hope to claim might be +/- 20 Hz, and probably its more
like +/- 60 Hz, so its the technique I use.

73 de Dave, W5SV


Coote, Jay wrote:

>Going over the KX-1 manual, it calls for aligning first the BFO and then
>the DDS by dialing in a strong carrier (WWV, etc) and then using the BFO
>or DDS menus.
>Can someone suggest some alternate alignment methods?  I have a
>calibrated freq counter and service monitor.
>
>Thanks,
>Jay
>W6CJ
>#1204 KX1
>  
>

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[Ron D'Eau Claire-2]

Jay, W6CJ wrote:

Going over the KX-1 manual, it calls for aligning first the BFO and then the
DDS by dialing in a strong carrier (WWV, etc) and then using the BFO or DDS
menus. Can someone suggest some alternate alignment methods?  I have a
calibrated freq counter and service monitor.

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

Sure, Jay. You can use the signal generator function of your Service Monitor
for the signal called for in the procedure, if you wish.

What those procedures do is input an offset to compensate for any small
errors in the frequencies of the crystals used in the KX1. That offset is
stored in memory using the BFO and DDS MENU functions so the frequency
display will be as accurate as possible. You should expect it to be within
200 Hz even without calibration.

A signal such as WWV is suggested simply because you cannot get anything
more accurate in frequency than WWV. Certainly your service monitor, if
properly calibrated, will be close enough to use.

Ron AC7AC



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