New release (4.0) 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/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 1.5.2 (FRANCE-INTER, DCF77, HBG, RUGBY, WWVB, WWV, WWVH, GPS)
Hello to all Ham and SWL, The new release of MULTIPSK (4.0) is in my Web site (http://f6cte.free.fr). 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 4.0 are the following: 1) possibility to code/decode the new Voice mode. See specifications further on. Voice is a MFSK mode designed for blind or partially sighted Hams and SWL's, derived from Olivia, so it is robust. The minimum ratio Signal-to-Noise ratio is about - 14.5 dB which makes it very sensitive. The tuning is tolerant (+/- 157 Hz). It is designed for a 500 Hz CW filter. All received characters can be pronounced. 2) Multipsk control through a TCP/IP link This TCP/IP link allows a non-commercial "TCP/IP client" program (located in the same PC) to control MULTIPSK.EXE (which is the "TCP/IP server") in RX and in TX, Multipsk being transformed in a "digital Modem" for a lot of digital "text" modes. The TCP-IP exchange is classical. The adress used is the local one: 127.0.0.1 and the port used is the number 3122. A demonstration program "TCP/IP client" (.EXE and source in DELPHI 6 of Borland) can be downloaded from my site (http://f6cte.free.fr). It is called "Multipsk_client" and is written in English. The "TCP/IP client" program will be proposed, for example, for: * original protocols management, * communications in local languages, * automatic link establishment testing differents HF frequencies, * games (chess, draughts...) to play through a radio transmission... It could be integered to computerized log books. A certain number of proposed modes and functions (in red) are submitted to a Multipsk license. 3) addition of a digital dual trace oscilloscope 0-20 KHz, 4) addition of an "alignment on an AF frequency" possibility. 5) addition of RTTY 45 bauds Shift 850 Hz (FSK) and 23 Hz (MSK) modes. The 850 Hz shift mode is intended to old teleprinters. The RTTY 45 bauds, shift 23 Hz MSK mode, from MMTTY, has been created by Makoto Mori, JE3HHT around 2003. The modification 3 is a function submitted to a licence. Note: all the modifications are given in the bottom of the Configuration screen. 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 Voice specifications Creator : Patrick Lindecker (F6CTE) in 2006 Description : Baud rate : 21 Speed : about 2 characters/sec so 20 wpm Modulation : FSK 8 tones (3 bits arranged in a Gray form), with a shift between tones of 21 Hz (168 Hz bandwidth). A block is composed of 32 symbols of 3 bits (in other words it is a matrix of 32 columns (following the time) on 3 lines). Each of the 3 block lines of this block corresponds to a character which has been encoded, on a 32 bits vector, using a Walsh-Hadamard transform to provide a high level of redundancy. Note: the implicite used matrix is 64x32 dimension, the 32 first lines are the 32 standard orthogonal combinations of the Hadamard matrix. The 32 next lines are their opposite. So any couple of lines are either orthogonal (scalar product=0) or biorthogonal (scalar product<0). Reception mode: sensible to the side (USB or LSB), USB is recommended Shape of pulse : specific shape (between a Hanning window and a rectangular window) Character set : ASCII 6 bits (64 characters) but only 61 are usable. Bandwidth : 168 Hz Synchronization : automatic using the signal Correction code: no Convolution code: no Interleaving : yes, spreading of 3 bits "vertically" in the block, Scrambling : yes, with a 32 bits sequence applied on each line of the block but with a delay of 13 bits between two successive lines. Drift tolerance : 10 Hz/mn (depending on signal the signal-to-noise ratio) Pmean/Ppeak : 0.76 Lowest S/N : - 14.5 dB Repetition of characters This mode being done for blind or partially sighted Hams or SWL's, all received characters can be repeated. So a received character will be displayed on the screen and it could be, in the same time, repeated in an audible way. To take profit of this function, the output plug of the sound card must be connected to an amplified speaker in parallel to the transceiver input. Important: as the amplified speaker is going to be also active during transmission, not to collapse the output signal, the ideal would be to use the sound card "Speaker" output instead of the "Line out" output. If your sound card does not have this type of low impedance output, it must be checked that the sound card output can supports the amplificed speaker and the transceiver input, by looking, on a voltmeter, at the signal delivered by the sound card, which must not fluctuate. If it fluctuates, the only solution is to do an interface to "open" the circuit to the amplified speaker when the program is Txing (see the second example in the RS232_EN.DOC file, but replacing the relay on the diagram by an inverted relay, so as to open when Txing). Furthermore, this interface will avoid to hear the modulation when TXing. Frequency tuning Any AF frequency (200 to 4000 Hz) must be able to be used. However, it is considered a standard central AF frequency of 1000 Hz for this mode, to simplify tuning. Furthermore, the "Freq. search" function permits to localize any Voice transmission in a 480 Hz band. So the ideal would be to set ON the XCVR 500 Hz CW filter and to tune the HF frequency on the XCVR instead of tuning the AF frequency on the waterfall. Note: this mode is directly derived from the 8 tones, 62.5 bauds Olivia mode (Pawel Jalocha SP9VRC) but with a 32 bits vector instead of a 64 bits vector, a different set of characters and a different speed. [Non-text portions of this message have been removed] ------------------------ Yahoo! Groups Sponsor --------------------~--> Check out the new improvements in Yahoo! Groups email. http://us.click.yahoo.com/6pRQfA/fOaOAA/yQLSAA/ELTolB/TM --------------------------------------------------------------------~-> Need a Digital mode QSO? 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