[Elecraft] WSJT-X Frequency Anomaly

Richard FlatHat at comcast.net
Fri Jan 18 11:54:23 EST 2019


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.

We involved a third station and compared three ways. The results were the same: no agreement anywhere.

The radios were my K3s, a TS-990s, and a high-end Yaesu. All of us were using WSJT-X 2.0.0. None of us had RIT or XIT in use.

What’s the deal? Is there a way to calibrate the software so the frequency shown by WSJT-X is the frequency upon which we are actually transmitting or receiving?

Please keep in mind that none of us is a Paul Horowitz, but neither are we Gomer Pyle…  somewhere in between.

Cheers.
Richard - W4KBX


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