Ed, I hope I get this right. With either Fake It (which I use with my 6700) or Rig, WSJT is doing some math to keep your audio frequency in the middle of the Tx audio bandpass. That is where there is the least likelihood of distortion. To do that it either adds or subtracts from the VFO frequency on your radio when you transmit to keep you centered in the Tx bandpass. On the receive end your audio frequency comes out wherever you placed the Red bucket.. You can see the VFO frequency shift by watching the VFO frequency display on the Flex when you Tx and go back to base on Rx.
It all works, it is just a little different. I think of the VFO frequency as the base frequency. What matters is the audio frequency - the number you see on the Wide Graph. I use DXKeeper and what actually gets logged is the base frequency plus the audio frequency (I think) I made a 15m FT8 Q yesterday and what was logged as the Tx frequency was 21.076131. The base frequency was 21.074 and I must have been on 2131 which makes sense because I usually hang out above 2000 (less interference). Hope that helps John On Tue, Nov 5, 2019 at 10:53 AM Edward stallman <ed.n...@gmail.com> wrote: > I posted this on the Flex Community but wanted to ask here too > > Question while using FT8 F/H , I'm using the Flex 6600 with Slicemaster to > execute WSJT. This morning while calling T6AA my dial freq on the flex > was 7.070.00 F/H . I go into the WSJT settings and tick Hound plus check > the square box, then under Radio I check Rig and OK . I get the red flag > stating I"m in Hound mode . I'm copying T6AA at 495 Hz , I set the red TX > at 2002 Hz ... Now when I transmit I see the WSJT freq shift from > 7.070.000 to 7.070.500 ... All this looks as it should up to this point ! > > Here's the part I don't understand . I stopped transmitting long enuf to > be sure I'm on a clear freq , What I see big signal on my TX freq 2002 HZ . > The op was a friend of mine who was on the ON4KST low band chat . I tell > him we are both transmitting on 2002 HZ . My friend and others all agree > that I'm not on 2002 Hz , that they decode me at 1502 HZ . I move my Red TX > to 2502 Hz and ask the group where they decode me now ? They all agree I'm > still on 1502 HZ . > > If this is the way it's supposed to work , I fine this strange ? to be > sure I'm TXing on a clear freq I have to subtract 500 or 1000 Hz from where > I place my Red goalie ... Or is something setup wrong somewhere ? > > Thanks Ed N5DG > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wsjt-devel >
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