Multipsk is a multimode receive/transmit program that works with the PC sound card in Windows or Linux. It's rapidly becoming the big gun in freely available ham/SWL software for these platforms.
The program is by Patrick Lindecker, F6CTE. It can be downloaded from Patrick's F6CTE web site, which is in English. A Yahoo group (also in English) for users is reachable at Multipsk (at) yahoogroups.com. I haven't looked at this group, but I keep meaning to.
Just about everyone I can think of who uses Windows or Linux for serious utility work has at least tried this program. Now that SkySweeper is no longer supported, Multipsk is the most viable PC multimode package for under $3000 US. WAY under, in fact, since a perfectly acceptable version is available free. As in $0000 US. This is not crippleware or nagware. When you pony up the $45 (last I looked), you get more features, and lose the time limits on some others.
New versions come out on a regular basis, and most add at least one new mode. The latest is 4.18. The major change from 4.17 is the addition of US weather radio SAME (Specific Area Message Encoding) decode. I've played with SAME on my scanner a bit. Its purpose is to alert local areas for bad weather.
The list of other modes is boggling:
110A (MIL-STD-188-110A/B), 1382 (1200 baud MSK), STANAG 4285, VHF ACARS, ALE, AMTOR/SITOR, ASCII, BPSK/QPSK 32/63/125/250, CHIP 64/128, Contestia, Coquelet, CW (OOK/Coherent/FSK), DGPS, Domino, DSC, DTMF, FAX, Hellschreiber (Feld/PSK/FM), JT65, MFSK8/16, MT63, Olivia, Packet/APRS, Pactor-I (used mostly for calling), PAX, PSK10/63F/220F, PSKAM, QRSS, RTTY, SELCAL, SSTV, and THROB.
Whew.
Hams will be able to take advantage of many features for logging, radio control (with 3rd-party software), and display of things like maps. For utility, the later versions have steadily added "professional" modes, such as SITOR-A, non-amateur RTTY speeds and shifts, and a SYNOP decoder (time limited w/o registration). Now, if I could only get good skip on Hamburg Meteo when the SYNOP codes are on.
The package includes another program called Clock, which decodes the data hidden in most time signals and GPS. After registration, it can set your computer clock. I've used this on several low-frequency European time signals via the WebSDR in Holland. This is close to a worst case for decode, given the Internet link's general instability. With considerable patience, though, I've managed decodes on nearly all stations at one time or another.
Anything this complicated is going to have a learning curve. Also, many people have been intimidated at first by the user interface. Now, I have come to like this. It's way faster than going through menus or trying to remember presets when you're in a hurry to grab onto some signal. The downside, though, is that there really are a lot of little buttons.
The colors have also turned some people off, though I don't mind them at all. They help group the aforementioned little buttons in a fairly logical manner.
How do the decodes stack up against other programs? Most of the time, just fine. I like SkySweeper better for FAX, but a lot of people hate it. DGPS might be better than SkySweeper, though DSCdecoder beats them both. SIGMIRA is somewhat better than either for STANAG 4285, though that mode really pushes the edge for any sound card decoder.
Where Multipsk has the general edge, for me anyway, is its use as a tool for attacking completely weird signals. This is especially true for the PSK variants.
I realize that the high-end government packages are often pretty good at this. But they aren't free/ $45. Case closed.
Showing posts with label decoder. Show all posts
Showing posts with label decoder. Show all posts
Monday, July 26, 2010
Sunday, May 31, 2009
BREAKING NEWS: SkySweeper Decoder Program Is Discontinued!
This terse announcement was posted on Saturday to the SkySweeper mailing list:
Given the time difference between here and Finland, where the program was produced, June 1 has already come. SkySweeper is no more.
SkySweep Messenger is a commercial-grade messaging suite based on STANAG 4285, 4539, and 5066. It is also capable of the American MIL-STD-110A/B and MIL-STD-141 (more commonly known in the hobby as "ALE"). It has the usual e-mail and Internet connectivity. It is aimed at government users and Non-Governmental Organizations (NGOs).
SkySweeper was intended for either the more geeky hams or the hard core digital utility fans (in other words, us). It was a good deal for the price. It contained a great number of highly modular sub-programs, some working better than others, which could be combined in endless ways at the will at the user. More money got you more modules, not better code.
Dedicated, more specialized programs could often produce more accurate decodes of a few modes at a time, but with the loss of this modularity. SkySweeper allowed the user to string together decoders, analyzers, filters, processors, and transmitters into truly mind boggling series and parallel configurations. One could spend years experimenting with all this.
Best of all, Mikko was always available on the mailing list to answer newbie questions, gripes, and bug reports.
Mac users are lucky to still have Chris Smolinski's excellent MultiMode package. On the PC side, however, the departure of SkySweeper leaves a real gap in the market. There are still MixW and MultiPSK, both excellent multimode packages, but obviously aimed more at hams. On the high end, we still have the professional multi-mode products by HOKA, Wavecom, et al, but these are rightfully priced well beyond the means of most hobbyists.
I'm hoping that I'll still be able to move SkySweeper to new computers, because I'll be using it for a long time to come.
Hello All,
All sales, marketing and development of SkySweeper Std, SkySweeper Plus and SkySweeper Pro will be discontinued from 1st of June 2009.
SkySweep Technologies LTD is now fully concentrating on the SkySweep Messenger product family and some other professional systems development.
SkySweeper support continues as it is until 1.1.2011.
The latest versions and manuals can be downloaded here:
http://www.skysweep.com/index-6.html
We would like to send our warmest thanks to all the SkySweeper users!
Mikko Huttunen
General Manager
SkySweep Technologies
Given the time difference between here and Finland, where the program was produced, June 1 has already come. SkySweeper is no more.
SkySweep Messenger is a commercial-grade messaging suite based on STANAG 4285, 4539, and 5066. It is also capable of the American MIL-STD-110A/B and MIL-STD-141 (more commonly known in the hobby as "ALE"). It has the usual e-mail and Internet connectivity. It is aimed at government users and Non-Governmental Organizations (NGOs).
SkySweeper was intended for either the more geeky hams or the hard core digital utility fans (in other words, us). It was a good deal for the price. It contained a great number of highly modular sub-programs, some working better than others, which could be combined in endless ways at the will at the user. More money got you more modules, not better code.
Dedicated, more specialized programs could often produce more accurate decodes of a few modes at a time, but with the loss of this modularity. SkySweeper allowed the user to string together decoders, analyzers, filters, processors, and transmitters into truly mind boggling series and parallel configurations. One could spend years experimenting with all this.
Best of all, Mikko was always available on the mailing list to answer newbie questions, gripes, and bug reports.
Mac users are lucky to still have Chris Smolinski's excellent MultiMode package. On the PC side, however, the departure of SkySweeper leaves a real gap in the market. There are still MixW and MultiPSK, both excellent multimode packages, but obviously aimed more at hams. On the high end, we still have the professional multi-mode products by HOKA, Wavecom, et al, but these are rightfully priced well beyond the means of most hobbyists.
I'm hoping that I'll still be able to move SkySweeper to new computers, because I'll be using it for a long time to come.
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