The main improvement of MULTIPSK 4.45 PSK125R/250R/500R modes coding/decoding The “R” means “Robust”, this because the modulation is the PSKxyzF one, at which it is added an interleaving. The PSKR modes (initially created on the Fldigi program) are fast, robust and sensitive. The advised frequencies are 1838, 3570, 7070, 14070, 18101, 21070 and 28120 kHz. … Meer lezen over Release of MULTIPSK (4.45)