[Elecraft] Why is my K3 off frequency?

[John Stengrevics]

Hi Charles,

Maybe you’ve done this, but if not, you should do frequency calibration per the manual (p.53 in mine).  

This worked well for me until it didn’t.  I then had to go to a 10 MHz external source which works well except that my 2 meter transverter is 600 Hz low (all other frequencies are perfect).  Tech support provided an adjustment solution for the transverter which  is beyond what I can do.  Will send it back to Elecraft when my K4 arrives.

73,

John
WA1EAZ

> On Mar 23, 2021, at 8:27 AM, Michael Walker <va3mw at portcredit.net> wrote:
> 
> If your Net Control station has an accurate enough ear to tell you are 12Hz
> off frequency on an SSB net, I would ask him to align it for you.
> 
> On 80M, you may be only off frequency by a few hz.
> 
> 12Hz at 50Mhz is really nothing.  If it concerns you, you will need to
> align it with the correct alignment tools and a trip to a repair facility
> with a calibrated frequency standard is in order.  If it was me, I wouldn't
> worry about it too much.  You can remind your Net controller that that is
> what the RIT control, is for on his radio.
> 
> If I remember correctly, the K3 accuracy is 5ppm and at 50Mhz that is +/-
> 250hz at 50Mhz.  It is only 15Hz at 80M.   If my assumption is correct or
> PPM, your radio is within Spec.  I'm sure others will correct me if I
> am wrong.
> 
> Mike
> 
> 
> On Tue, Mar 23, 2021 at 6:19 AM Charles Tropp <charlestropp at gmail.com <mailto:charlestropp at gmail.com>>
> wrote:
> 
>> Hi,
>> Last night my local ham club scheduled their first ever 6Meter Net and
>> Roundtable for 50.135Mz. I operate USB very rarely, preferring CW for all
>> of my Contesting and DX work. Last night the net control station advised me
>> that I was 12Hz too high and that he had to use his RIT control to tune to
>> me. When I turned on my XIT and transmitted down 12Hz I was right on his
>> frequency. This was confirmed by other callers as well. I have also heard
>> this problem mentioned in the past when checking into occasional 75M nets.
>> Is there an adjustment that I can or should make aside from using my XIT?
>> 
>> Thanks for any assistance you can provide.
>> 
>> --
>> *73, Charles N2SO*
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