Ian, PSK packet acts as FSK packet. So you can use it to send APRS positions (possibly from UIVIEW or from Multipsk) or in connected transmission. BPSK63 seems a bit slow for connected transmission, however it is possible.
Pax/Pax2 derives from Packet with a modulation close to Contestia. The number of digipeaters is limited to 2. 73 Patrick ----- Original Message ----- From: "mikenetbot" <mikenet...@comcast.net> To: <digitalradio@yahoogroups.com> Sent: Tuesday, September 01, 2009 12:55 AM Subject: [digitalradio] Re: PSK-PACKET anyone? - Description > Has anyone tried keyboard-to-keyboard connected BPSK63? (I assume that it > is connected and not UI, as we are talking about the FRACK option). > > Also, am I correct that PAX/PAX2 will run in connected mode? For some > reason I thought they were UI-only, but now I cannot tell. > > I'm interested in these soundcard ARQ modes. > > --- In digitalradio@yahoogroups.com, "Patrick Lindecker" <f6...@...> > wrote: >> >> Hello Ian, >> >> Here is some information about PSK Packet. >> >> Important: in BPSK63 Packet, set the FRACK option at, at least, 8 seconds >> (the standard 5 sec is not sufficient). >> >> 73 >> Patrick >> >> >> Coding/Decoding of Packet BPSK1200 and new modes Packet BPSK250 and >> BPSK63 >> The BPSK1200 Packet mode is used for satellite (as LUSAT LO-19 for >> example) >> transmissions in UHF (USB). But it could also be used in VHF (FM ) with a >> better performance than Packet FSK, in Unproto (APRS) or in connected >> mode. >> >> The BPSK250 and BPSK63 Packet modes are experimental and could be used >> favourably for APRS transmissions in HF. >> >> Description of the PSK Packet 1200: >> >> >> >> >> The PSK Packet at 1200 bauds shares the same characteristics as the FSK >> Packet at 1200 bauds, except some ones: >> >> >> >> >> * the modulation is a DBPSK one (differential binary phase shift keying), >> as, for example, in PSK31. DBPSK is better that FSK, >> >> >> >> >> * bandwidth : about 2000 Hz >> >> >> >> >> * Pmean/Ppeak: 0.79 >> >> >> >> >> * the lowest S/N is about +6 dB, >> >> >> >> >> * very high capacity (up to 40 Hz/sec) to follow a satellite drift (using >> the Cat system of the transceiver). >> >> This mode is used for satellite (as LUSAT LO-19 for example) >> transmissions >> in UHF (USB). But it could also be used in VHF (FM ) with a better >> performance than Packet FSK, in Unproto (APRS) or in connected mode. >> >> >> >> >> Description of the PSK Packet 63 and 250 bauds: >> >> >> >> >> The modulation is the same as BPSK1200 with a different speed. >> >> >> >> >> The BPSK Packet at 250 bauds has a bandwidth of about 500 Hz and a lowest >> S/N of about -2 dB whereas the BPSK Packet at 63 bauds (62.5 in fact) has >> a >> bandwidth of about 160 Hz and a lowest S/N of about -8 dB. >> >> >> >> >> >> >> >> >> ----- Original Message ----- >> From: "Ian Wade G3NRW" <g3...@...> >> To: <digitalradio@yahoogroups.com> >> Sent: Thursday, August 27, 2009 6:38 AM >> Subject: Re: [digitalradio] PSK-PACKET anyone? >> >> >> > From: kt4w...@... >> > Date: Wed, 26 Aug 2009 Time: 20:57:35 >> > >> >>Anyone up for some PSK-PACKET?? 63b >> >> >> >>on 10.141.5 1650hz >> >>21:00 Easttime >> >> >> >>Trip - KT4WO >> >> >> > >> > Trip, >> > >> > What is PSK-PACKET 63b? >> > >> > -- >> > 73 >> > Ian, G3NRW >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > ------------------------------------ >> > >> > Announce your digital presence via our Interactive Sked Pages at >> > http://www.obriensweb.com/sked >> > >> > Recommended digital mode software: Winwarbler, FLDIGI, DM780, or >> > Multipsk >> > Logging Software: DXKeeper or Ham Radio Deluxe. >> > >> > >> > >> > Yahoo! Groups Links >> > >> > >> > >> > >> > > > > > ------------------------------------ > > Announce your digital presence via our Interactive Sked Pages at > http://www.obriensweb.com/sked > > Recommended digital mode software: Winwarbler, FLDIGI, DM780, or Multipsk > Logging Software: DXKeeper or Ham Radio Deluxe. > > > > Yahoo! Groups Links > > > > >
