[Elecraft] Frequency counters for Alignment

[Don Wilhelm]

Dave,

To calibrate a frequency counter, you must have an accuracy of 10 times
greater than the lowest resolution on the counter.  In other words, if your
counter reads down to 1 Hz, then you must calibate it to within 1/10th Hz to
assure that the last digit is accurate.  +/- 1 kHz is just not sufficiently
accurate for calibrating a frequency counter that I would want to use at my
workbench.

You can calibrate your K2 to within 20 Hz and use the K2 output to calibrate
your counter.  The K2 calibation can be done with no equipment other than
the K2 itself with its counter probe.  I do this on a daily basis on K2s
that I have in for repair - it works.  The method is available on the
Elecraft website at
http://www.elecraft.com/Apps/K2%20C22%20Adjust%20App%20Note.pdf .

73,
Don W3FPR

> -----Original Message-----
>
> I have a couple of frequency counters, and I know they are a little off.
>   When I went through the alignment the first time, they tell you how to
> adjust settings based on zero beating from another transceiver, but I
> wanted to calibrate one of these counters well enough to use one of them.
>
> I have a XG2 that I haven't built yet, and I see that it has a +/- 1khz
> accuracy.  I was thinking of using that to at least get the counter (a
> Heathkit IM-2410) close enough so I don't have to use the other
> transceiver.  The XG2 will work ok for this won't it?
> --
>
> David Wilburn
> dave.wilburn at verizon.net
> K4DGW
> K2 #5982
>
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.446 / Virus Database: 268.18.5/706 - Release Date: 2/28/2007
4:09 PM