Re: [wsjt-devel] Frequency calibration - use of RWM Moscow in Europe

[Bill Somerville]

On 06/07/2017 23:14, Erik Icket wrote:

When performing the Frequency Calibration using the 3 combined RWM
frequencies  (4.996 , 9.996 and 14.996 MHz), I have observed very consistent
results with the DF typically floating less than 0.2 Hz.


Hi Erik,

I have added them for IARU region 1 along with BBC Radio 4 on 198kHz.

AM modulation should not be an issue as the measurement is averaged.

73
Bill
G4WJS.


--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
wsjt-devel mailing list
wsjt-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/wsjt-devel

[wsjt-devel] Frequency calibration - use of RWM Moscow in Europe

[Erik Icket]

Hi, 

When performing the Frequency Calibration using the 3 combined RWM
frequencies  (4.996 , 9.996 and 14.996 MHz), I have observed very consistent
results with the DF typically floating less than 0.2 Hz.

RWM transmit an unmodulated carrier between 0 and 8 minutes past the hour
(as well as 30 mins later). More info can be found at
https://en.wikipedia.org/wiki/RWM

Maybe worth documenting, or including in the FreqCal list, as unmodulated
carriers are not that frequent in the HF spectrum in Europe, and the FreqCal
mode handles them as an absolute breeze.

73's
ON4PB
Erik




--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
wsjt-devel mailing list
wsjt-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/wsjt-devel