| |
I6KZR > DIGIT 21.06.05 13:06l 164 Lines 5241 Bytes #999 (0) @ WW
BID : 843_I6KZR
Read: GUEST
Subj: NEW MULTIPSK 3.8 RELEASE
Path: DB0FHN<DB0MRW<OK0PPL<DB0RES<DK0WUE<I0TVL<HG8LXL<ON4HU<IQ6TC
Sent: 050621/1246 @:IQ6TC.#AP.IMAR.ITA.EU $:843_I6KZR Sally 4.0.205 Fermo
Date: mar, 21 giu 2005 12:46:30 CEST
From: I6KZR@IQ6TC.#AP.IMAR.ITA.EU (Renzo)
To: DIGIT@WW
Subject: NEW MULTIPSK 3.8 RELEASE
Inviato da: I6KZR@ON4HU.MOU.HT.BEL.EU
Hallo dear friends,
Patrick F6CTE has released a new version 3.8 of MULTIPSK. very
interessant is in this release the possibility to code/decode the
OLIVIA Default mode.
Tese are the main specification:
New release (3.8) of MULTIPSK
RX/TX: PSK10/BPSK31/QPSK31/PSKFEC31/PSK63/PSKAM10-31-50/PSK63F PSK220F +
DIGISSTV "Run"/CW/CCW/THROB/THROBX/MFSK8/MFSK16 (+SSTV)/OLIVIA
DF/MT63/RTTY 45/ASCII/AMTOR FEC/ PACKET 300-1200+APRS+DIGISSTV "Run" /FELD
HELL/PSK HELL/FM HELL/HELL 80/HF-FAX/SSTV/RX only: AMTOR ARQ/ NAVTEX/RTTY 50
+SYNOP+SHIP/RTTY 75-100/PACTOR1 DSP: FILTERS+CW binaural reception
PANORAMIC (RX 23 channels simultaneously): BPSK31/PSK63/PSKFEC31, with
automatic reception
Programmation of Multipsk reception + CLOCK 1.5.2 (FRANCE-INTER,DCF77, HBG,
RUGBY, WWVB, WWV, WWVH, GPS)
The main modifications of MULTIPSK (3.8) are the following:
1) possibility to code/decode the Hellschreiber mode FM HELL (see specifications further
on),
2) RX/TX of GPS positions and altitudes (NMEA 183) in APRS
3) possibility to code/decode the OLIVIA Default mode (see specifications further on, the
recommended frequencies being 7038.5 and 14107.5 KHz),
4) Help in German by Oskar (DL8MBF)... www.8ung.at/oskar.pickert
5) PDF file of the help by Terry: www.hamsoft.co.uk
6) AFC (Automatic Frequency Control) in RTTY.
7) A DLL (freeware) F6CTE_DLL_RX_SOUND_CARD_V_1 and two Delphi/C++ test
programs are proposed to Hams and SWL who want to manage a sound card (RX), in a
simple way.
8) correction de "bugs" sur CLOCK 1.5.2
For information, for all the Multipsk exotic modes (PSKFEC31, PSK10, PSKAM, PSK63F,
PSK220F (+DIGISSTV), CCW, MFSK8, THROBX, OLIVIA...), I propose the QRP frequency:
14075Khz USB (AF around 1000Hz), at 17h00 UTC.
Description of the FM HELL mode:
Createad by: Nino Porcino (IZ8BLY) and Murray Greenman (ZL1BPU)
Baud rate: 105 or 245 (only 245 bauds on Multipsk)
Matrix: for FM HELL 105 bauds…height: 6 pixels and width: 7
pixels for FM HELL 245 bauds…height: 7 pixels and width: 14 pixels
Speed: 25 wpm
Modulation: MSK with a "minimum" shift between tones of 122.5 Hz
(at 245 bauds). The white is at the upper frequency and the black
at the lower one.
Receive mode: USB
Character set: all ASCII printable characters except small letters,
carriage return (+ line feed) and error correction character. The used
font (FeldHell) is derived from the font of G3PLX (Peter Martinez),
Shape of pulse: rectangular
Bandwidth: about 130 Hz for 105 bauds and 300 Hz for 245 bauds,
Synchronization: no need, each column is displayed vertically 2 times
(but transmitted once)
Pmean/Ppeak: 1
Lowest S/N : - 10 dB for the 245 bauds mode
Description of the OLIVIA DF ("DeFault mode"):
Creator: Pawel Jalocha SP9VRC in 2005
Baud rate: 31.25
Speed: 2.44 characters/sec so 24 wpm
Modulation: FSK 32 tones (5 bits arranged in a Gray form), with a
shift between tones of 31.25 Hz (1000 Hz bandwidth). A block is
composed of 64 symbols of 5 bits (in other words it is a matrix of 64
columns (following the time) on 5 lines). Each of the 5 block lines of
this block corresponds to a character which has been encoded, on a 64
bits vector, using a Walsh-Hadamard transform to provide a high level
of redundancy.
...........................
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 7 bits (128 characters)
Bandwidth : 1000 Hz
Synchronization: automatic using the signal
Correction code: no
Convolution code: no
Interleaving: yes, spreading of 5 bits "vertically" in the block,
Scrambling: yes, with a 64 bits sequence applied on each line of the
block but with a delay of 13 bits between two successive lines.
Drift tolerance: 30 Hz/mn
Pmean/Ppeak: 0.76
Lowest S/N: - 12 dB
Note: it exists 39 other Olivia modes (not decoded by Multipsk), from
8 to 256 tones and from 125 to 2000 Hz of bandwidth. All are conceived
in the same way.
Multipsk specificities:
.........................................
- the reception and the transmission can be done everywhere on the
spectrum,
- the search of the Olivia central frequency is done when clicking on
the spectrum. It takes 5 seconds. Afterwards, when decoding, there is
no automatic search but a simple frequency drift following, this to
avoid abrupt frequency variations on events as QRM or QSB,
- an offset between sound cards sampling frequencies inferior or equal
to 1 % is withstood.
Multipsk is free.
You can find new release in my web site http://www.i6kzr.it or in the
author web site http://members.aol.com/f6cte/.
Frase del giorno:
SENECA: Nullus agenti dies longus est.
73 Ciao a tutti Renzo.
li, mar 21 giugno 2005 12:34 (+2.00) CEST
/___/____/
/ / /
||
|| I6KZR Fermo, Italy
|| BBS I6KZR@IQ6TC.#AP.IMAR.ITA.EU
|| e_mail i6kzr@i6kzr.it
|| web http://www.i6kzr.it
|| TCPip: 44.134.243.003
Messaggio inviato con Sally V4.0.205 software packet per Windows
32bit.
Read previous mail | Read next mail
| |
