Locked Re: IC-718, SignalLink and WSJT-X

Bob Lewis

“Fake it” split function automatically adjusts your Tx VFO frequency on the radio to keep your actual transmit tones between 1500Hz and 2000Hz. Keeping your Tx tones above 1500Hz ensures that *if* you generate any audio harmonics that they will above 3000Hz and thus outside of the transmitter filter so that they will not be transmitted. Of course, having WSJT-x shift your VFO frequency requires that you have CI-V or CAT enabled.


If you don’t have CI-V or CAT then it is best to stay above 1500Hz on transmit to avoid the harmonic situation.


From: WSJTX@groups.io [mailto:WSJTX@groups.io] On Behalf Of tomstoudt via groups.io
Sent: Monday, May 18, 2020 12:27 PM
To: WSJTX@groups.io
Subject: Re: [WSJTX] IC-718, SignalLink and WSJT-X


I have the same setup at home. I use TX Hold and keep my eye on the waterfall to be sure I am transmitting on a clear frequency. Can you please explain the “fake it” split function and why I should stay above 1500hz?

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