New release (4.1) of MULTIPSK RX/TX: PSK10/BPSK31-63-125/QPSK31-63-125/CHIP (64/128)/PSKFEC31/PSKAM10-31-50/PSK63F - PSK220F + DIGISSTV "Run"/CW/CCW/CCW-FSK/THROB/THROBX/MFSK8/ MFSK16 (+ SSTV)/OLIVIA/CONTESTIA/RTTYM/VOICE/DominoF DF/DominoEX/MT63/RTTY 45/75/ RTTY 50+SYNOP+SHIP/ASCII/AMTOR FEC/ PACKET 300-1200 + APRS+ DIGISSTV "Run"/ PACTOR 1-FEC/PAX+PAX2 + APRS/FELD HELL/PSK HELL/FM HELL (105-245)/HELL 80/ HF-FAX/SSTV/ RX only: AMTOR ARQ/NAVTEX/RTTY 100/ DSP: Filters + CW binaural reception PSK Panoramic (BPSK31/BPSK63/PSKFEC31): RX 23 channels simultaneously CW Panoramic: RX 8 or 23 channels simultaneously RTTY Panoramic: RX 8 RTTY QSO decoded simultaneously on 22 channels Programmation of Multipsk reception TCP/IP digital modem CLOCK 1.5.3 (FRANCE-INTER, DCF77, HBG, RUGBY, WWVB, WWV, WWVH, GPS) Hello to all Ham and SWL,
The new release of MULTIPSK (4.1) is in my Web site (http://f6cte.free.fr) and, also, the 1.5.3 of Clock (improvement of the GPS decoding). The main mirror site is Earl's, N8KBR: http://multipsk.eqth.org/index.html Another mirror site isTerry's: http://www.hamsoft.co.uk/ Multispk associated to Clock are freeware programs but with functions submitted to a licence (by user key). The main modifications of MULTIPSK 4.1 are the following: 1) addition of the Contestia and RTTYM modes. See specifications further on. Main frequencies: For 1000 Hz bandwidth sub-modes, with an AF frequency of 1000 Hz, frequency displayed on the transceiver: 14103.5 Khz For 500 and 250 Hz bandwidth: 7039.5, 14075.5 Khz The Contestia and RTTYM modes are directly derived from the Olivia mode (Pawel Jalocha SP9VRC) but with a different compromise between speed and robustness. * CONTESTIA is a bit less sensitive than Olivia (+1.5 dB on minimum S/N). It is a also a bit less robust (due to a smaller block size) but it is twice more rapid (with a reduce set of characters). This mode is an excellent chat mode (because sensitive and rapid). * RTTYM is a less sensitive than Olivia (+3 dB on minimum S/N). It is also less robust (due to a small block size and due to the RTTY problem of random shift from letters to figures or reversely, on an error) but it is almost four times more rapid (with the RTTY set of characters). This mode is interesting for very quick QSO. 2) addition of the SSTV mode "SC2 180". This mode gives very good SSTV pictures (the SSTV transmission lasts 3 minutes) 3) addition of a digital dual trace spectrum analyzer (+ waterfall) 0-20 KHz 4) addition of an interface to a direct conversion receiver through the Multidem program, the Multidem signal being transmitted to Multipsk via a TCP/IP link. MULTIDEM 1.0 is a USB/LSB/AM demodulator for direct conversion receivers available from my WEB site. This program ("freeware") permits to: - extract any USB, LSB or AM transmission present in the AF band of a direct conversion receiver, up to 20 Khz, - to band-pass filter the received signal, - afterwards, to forward it to amplified loudspeakers and to Multipsk (for decoding) through a TCP/IP link. 5) APRS: Multipsk becoming compatible with UI-VIEW (about GIF pictures and .INF format description files), all the maps and .INF files of the UI-VIEW MAPS folder can be copied to the Multipsk MAPS folder and be used, 6) improvement of the recording function. The modifications 3 and 6 are about functions submitted to a licence. Note 1: all the modifications are given in the bottom of the Configuration screen. Nota 2: the software APRS-SCS version 1.29 (John KB2SCS) can connect to Multipsk through the TCP/IP link. For information, for all the Multipsk exotic modes (PSKFEC31, PSK10, PSKAM, PSK63F, PSK220F (+DIGISSTV), CCW-FSK, MFSK8, THROBX, DominoF, DominoEX, PAX, CHIP, Voice...), I propose the QRP frequency: 14075 Khz USB (AF around 1000 Hz), at 17h00 UTC. 73 Patrick Contestia/RTTYM specifications Here is a comparison board between Olivia, Contestia and RTTYM: Parameters OLIVIA CONTESTIA RTTYM Block size (symbols) 64 32 16 Scrambling pseudo-random sequence 0xE257E6D0291574EC 0xEDB88320 0xEDB88320 Scrambling shift (in number of bits of sequence right rotation) 13 5 5 Characters set 7 bits (ASCII) 6 bits char -> decimal code 0 (remplissage)-> 0 Space -> 59 <CR> -> 60 CHR(33) to CHR(90) -> 1 to 58 Multipsk specificity: <BS> (<--- key) -> 61 Small letters are transformed in capital letters 5 bits Same set of characters as for standard RTTY, except that the "letters" character is the CHR(0) instead the CHR(31) one The idling character is the CHR(31) character. Multipsk specificity: <Bell> is coded as @ (second ' in Mixw) Characters transmission speed x1 x2 almost x4 Minimum S/N / Olivia for same the sub-mode +1.5 dB (about) + 3 dB (about) [Non-text portions of this message have been removed] Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
