[Elecraft] Calibration using WWV and a Smartphone

[Robert Glorioso]

Here is how I do it.

1. Load a Music tuning app that also reports frequency in Hx on your smartphone.  “PANO TUNER” on the iPhone is Free,  (Not a type, PANO is correct.)
2. Tune in WWV on AM on 5, 10, or 15 MHz.
3. Calibrate the iPhone tuner using 440, 500 or 660 HZ tone that WWV transmits at different times for a few minutes by noting the frequency difference.  Mine was well within 1Hz.  The tone schedule is on the WWV website.
4. Set the rig to USB and move the carrier until you read 440, 500 or 600Hz lower on your dial,
5. Read the frequency on your smartphone and then recalibrate the rig to read 440, 500 or 600 Hz.
6. You’re now calibrated to within at least 1Hz of the right frequency.

73,
Bob
W1IS



Message: 1
Date: Fri, 16 Dec 2016 20:12:17 -0500
From: N2ZDB at aol.com <mailto:N2ZDB at aol.com>
To: elecraft at mailman.qth.net <mailto:elecraft at mailman.qth.net>
Subject: [Elecraft] Sync AM and checking VFO accuracy using WWV
Message-ID: <c4be67.2ee04eb2.4585eaf0 at aol.com <mailto:c4be67.2ee04eb2.4585eaf0 at aol.com>>
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If I set my K3's VFO to WWV at 5.000000 MHz with AM-S on....and I adjust  
"REF CAL" to a number where
my VFO's frequency readout is exact or near this number +/- maybe a Hertz  
or two. Is this an accurate way to calibrate my K3?

It seems to be very accurate as far as I can tell.

Has anyone used this method?

Michael 
N2ZDB