Data Decoding packages and SDRs

Status
Not open for further replies.

osros

Member
Joined
Jun 12, 2003
Messages
213
Location
Gainesville, Texas
If you have seen the links on the page in my sig, you have an idea of what is out there now.

If we ignore the hyper expensive packages (Krypto, Hoka, WaveCom, etc.), you can build a nice library of software without spending big bucks. Certainly there's a place for those expensive decoders (but let's face it - not everyone can afford them). You will never get a straight answer about 'what is best' (much like asking the same thing about a car) simply because what is 'best' to one individual may not be to another. It's a matter of perspective, as well as a sometimes-subjective evaluation of performance. This is because each person may not have precisely the same setup (same receiver, antennas, PC, etc.) and all of this can influence that judgement to some degree.

If I were building a library - and most digital DXers I know do exactly this - of decoding software, I think you would be hard pressed not to find one (if not more) of the following (the links for all of these are listed in that page in my sig line, so I won't repeat them here)...

a. MultiPSK -has a USD45 registration fee for some modes, but is a very capable decoder, if you can get past the huge number of menus. Patrick doesn't seem to believe in pull downs...

b. Sigmira - Free, and it will handle Stanag4285 signals (it certainly won't de-crypt the ones that are encrypted, but that's to be expected)

c. Sorcerer - and I think it works directly with the SDR-14

d. PC-ALE - free, and it handles ALE signals. I should note that MultiPSK does too, but it's handy to have more than one decoder for a particular mode, and I'll get to why that's true in a moment

e. PC-HFDL- free, and it handles HFDL. Again, MultiPSK handles these as well

f. Rivet - free -Looks like the link on the UMC site is no good anymore, but here;s the right one...

https://github.com/IanWraith/Rivet/

g Digtrx - free - MIGHT be useful if you chase numbers stations...

Why overlap the decoders? Simple - one decoder might use a somewhat different algorithm for decoding that works better with your receiver and/or PC. There's no real way of determining this without experimentation.

With all of that at your fingertips you would probably be able to at least examine (if not outright decode) 70-80% of what's out there (that can be decoded - not encrypted).

Now there's the question of installation, of course, as well as the use of utilities like VAC or installing DLLs to make the SDR-14 talk to the software. I would install one at a time, use it for a bit, and when you're comfortable, install the next one and so on. Sorcerer has the advantage of (supposedly) interfacing with the SDR-14 directly, so that might be a place to start.

However a caution - if you belong to the UDXF Yahoo group (and you should - it's one of the best places to get digital station news and decoding), don't ask about that software there. It's known to be a crack of another package (not SkySweeper), and the folks running that group don't like it.

Mike

The next trick is how to recognize some of these esoteric modes, and how to test your setup to see if it's working. This article in our wiki addresses both questions...

DXing Digital Utilities - The RadioReference Wiki

Mike

Thanks a lot I will certainly start there with what decoders are avail free or low cost I got alot of catching up to do and get up to speed again with the basics and hope to get into the more exotic modes. Sorcerer looks free and does a lot, will play with it. Unfortunately I don't have much of a radio room now, building one now in my barn, getting away from the the RFI and power lines in the house and have not had a decent Antenna up in years. All that's going to change now so looking forward to it. in the mean time can catch up on the data reading.

BTW thanks for the direction to UMC website I forgot about it been many years nice that its still up.
 

ka3jjz

Wiki Admin Emeritus
Joined
Jul 22, 2002
Messages
25,512
Location
Bowie, Md.
According to the rtl-sdr blog, Sigmira now directly supports the RTL-SDR (with a ham-it-up converter or similar, since most all the modes this software covers are HF related).

You can get the link for Sigmira from the website in my sig line...Mike
 
Status
Not open for further replies.
Top