Re: New digital mode PS-18 (HF pager) from DXsoft and Radial, or we invented APRS again :-)
Sunday, August 30, 2020, 8:45:11 AM, you wrote:
C> Hey sergei, should the tx and rx center freq be the same?
More exactly (radio_freq + audio_center_freq) should be the same (if USB is used).
For example, carrier at 3570 kHz and 1700 Hz audio is the same as 3570.1 kHz and 1600 Hz
Decoder is robust with frequency error about 100 Hz (see wider marks at waterfall).
Windows HAM radio software at http://www.dxsoft.com