[RTTY] LSB - USB ON RTTY

[Richard Ferch]

The amateur standard is to use mark as the higher RF frequency. It doesn't
matter whether you use the lower sideband with mark as the lower audio tone
or the upper sideband with mark as the higher audio tone.

As for spotting and logging frequencies, the amateur standard is to log and
report the actual mark frequency. There are several different ways to
transmit on exactly 14080 kHz according to this standard: using FSK with a
dial readout of 14080.000 kHz (assuming your radio reads the mark frequency
in FSK, as many do); using AFSK on LSB with a dial readout of 14082.125 kHz
and mark/space tones of 2125/2295 Hz; or using AFSK on USB with a dial
readout of 14077.705 kHz and mark/space tones of 2295/2125 Hz. All three
give identical results, and all three should be logged and spotted as
14080.000 kHz. Most software will do the offset calculation automatically if
configured properly to match your setup.

73,
Rich VE3KI