Hello Markus, Locally, the scheme worked amazingly well, now I'd like to try it out on the air. My preferred freq would be 136.88 kHz shifted zerobeat, 136.95 to 137.5 USB. With 16 mW radiated PEP th
Dear Geri, Lionel, and LF group, playing with slow voice, I found that the main problem with simply time-stretching ("transposing") the audio spectrum is the slope of the transmitter's SSB filter. It