MPSK: Robust Packet Radio 8 Channels

Robust Packet Radio 8 Channels

Ch-8, Br-50, Sh-60, Mode-differencial PSK-2 also named as SDPSK.

Author: SergUA6

Band Width ~500 Hz

Low Range 300 Hz, shift is possible, recieved in SSB

Baud Rate 50 Hz

n-Ary (PSK/MPSK) Special PSK-4(SDPSK)

Count of Carriers 8 easily recognizeble frequencies

Step between carriers 60 Hz

RX mode SSB

The example of the signal is here. Send by cryptomaster.

Sonograms:

pic.1 General view

pic.2 Graphical spectrum

pic.3 Manipulation speed

Diagrams:

pic.4 Phase constellation

ROBUST PACKET RADIO 8 Channels - relatively new type, which is used by amateurs often.

It has multichannel transmission, in this case, we have 8channel transmission.

This signal isn't OFDM, although it is mistakenly considered to OFDM often.

Maximum technical speed is 8*50 = 400 bps.