There is a Freq Cal mode in WSJT-X. I suggest if the radio or sound
card is in question, run this mode and determine the results. Bet
you'll be surprised at the inaccuracy of the digital readout on a radio
and or soundcard. I was!
73
Bob, K4TAX
On 1/18/2019 3:23 PM, Don Wilhelm wrote:
Note that in the two cases mentioned, you reported 47 +/-1 Hz difference.
That is not much and can easily be attributed to a difference in the
calibration of the radio or the audio frequency accuracy of the
soundcards.
73,
Don W3FPR
On 1/18/2019 12:07 PM, Rick WA6NHC wrote:
On 1/18/2019 8:54 AM, Richard wrote:
After working a friend on 10 meters with FT8 I phoned and asked him
why he always stayed up high at 2454 Hz. He said WSJT-X said he was
dead on 2500 Hz.
I asked him what it said my frequency was. He said it was 1048 Hz;
my WSJT-X said I was dead on 1000 Hz. We did more testing at other
frequencies and on other bands and found similar discrepancies.
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