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Posted by Garry, K3SIW [ k3siw@sbcglobal.net ] on January 31, 2024 at 18:03:05.
In Reply to: Re: Two Way HiFER? posted by Ed Holland on January 31, 2024 at 15:45:44.
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Back in 2021 I temporarily replaced my slash code hifer with fst4w-120 transmissions. The latter were easy to generate using a spare IC706 radio tuned to 3.55393 MHz on 80 mtr USB. The output was padded down for the I input of a Mini-circuits ZAD-6 mixer. The local oscillator input was 10 MHz from an OCXO. After a high-pass filter the USB signal was summed with my other hifer, running regular wspr-2. Don't recall anyone other than SWLEM3 posting decodes, but at 823 miles using the qso mode fst4 should easily allow 2-way contacts. 73, Garry, K3SIW, EN52ta, Elgin, IL
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