Dear Cartoonman, I downloaded the P25 Phase-I Trunking Control Channel Data, in order to demodulate and decode it using Matlab. Normally I should pass it from an FMFrequency Modulation demodulator and inverse sinc filter filter. However, this is a baseband and real signal. Can you give me some information about how to demodulate it? Thank you very much.
Thank you for your hard work Cartoonman! - Admin
No problem! :) - Cartoonman
Thanks for updating this huge list. Your work really help sigidwiki and Artemis DataBase. Only a thing: can you upload images with an aspect ratio of 3:5 (example 150x250). Would be great for compatibility with the software. Today im working to update main database of software (with audio preview available offline) and some new features. Thanks again for great job done! - Aco
All articles that I've submitted (with exception of some recorded by Websdr @ University of Twente in Netherlands) are some multiple of the 3:5 ratio. Sizes should be either 150x250, 200x333, or 300x500. As for other images, I cannot guarantee that I can change every image to be 3:5, since some are samples that I simply don't have, or cannot reproduce (I can only reproduce signals that can be received via USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) to a certain degree of accuracy. Signals like FLEX and POCSAG require actually viewing the image in spectrum analyzer to get the image.) The update sounds great, thanks! - Cartoonman
Will take a look at the Mode problem, thanks for pointing it out in your last edit - Admin
Some fixes for the front page;
- DIGTRX: This isn't a mode, but an application written by a Brazilian ham (please, when marking callsigns, always put them in CAPS). It's been abandoned and forked off as WinMor. This should be dropped entirely - it's mentioned on the RDFT page in any case.
- Emergency Action Message: While the description is fine, it's only 1 of many messages - including ALEAutomatic Link Establishment - that are sent over the HFHigh Frequency (3-30 MHz)-GCS network. There are a few frequencies on the front page, but those are only the primary ones - there are literally hundreds of secondary and
ALEAutomatic Link Establishment specific freqs the HFHigh Frequency (3-30 MHz)-GCS network uses. So this is a message format, but not a mode or signal.
- PACTOR: More than hams and ships use this. Some quasi governmental as well as diplo use this mode. It should be noted that some stations use a proprietary modem that can't be read by most decoders. When they were on the air on HFHigh Frequency (3-30 MHz), Globe Wireless did this. Sailmail is an email service that has an extensive network of sites and frequencies - again, this is yet another case of having so many frequencies that it would be very difficult to parse them all. Take a look at http://www.sailmail.com then go down 1/3 of the way for the chart of sites and freqs
What other organizations use PACTOR besides hams and ships? Algerian customs, Czech diplo, ICRC (Red Cross), Pakistan ISI and SHARES are just some of them, and you can locate them with searches on the UDXF Yahoo group
- SITOR-A: The maritime industry is gradually moving away from using this mode in favor of PACTOR. In fact the biggest user of this mode is now MFA Cairo/Egyptian embassy nets worldwide. Just do a blind search on SITOR-A on the UDXF yahoo group and you're going to come up with a bunch of these. Weather forecasts and warnings weren't sent on this mode, but on the next one...
- SITOR-B: This is where you will find the weather forecasts, warnings and so on. Sometimes these stations send in their native language, not English. Some embassies also use this mode for short messages - this is greatly documented in Mike Chace-Ortiz's digital digest e-books sold on Amazon (cheap). Highly recommended reading.
It's probably not a good idea to try to list frequencies for these modes - they are literally all over the place. There's a website that lists SITOR-B broadcasts, and I think it's already on the SITOR-B article, but shouldn't be on the SITOR-A article - they're 2 very different modes.
More tomorrow, I think...Mike
I noticed you are missing a description for GMDSS. Might was well use the wikipedia description... Acknowledged
And something for JT65a... Acknowledged, its a website problem. The descriptions are there, but since the admin is working on things, some parts of the main page aren't working correctly. give it some time and it should be there when the admin is finished.
- CWContinuous Wave Morse Code - CWContinuous Wave (Continuous Wave) is often used as an acronym for Morse Code - so it should be listed either as CWContinuous Wave, or Morse Code; or if you want to list them together like this, say something like Morse Code (CWContinuous Wave) Mike
If you want to see what you can use for decoding digital modes, these pages will be a far more complete way of finding things rather than just doing blind searches. The third link is a PDF, and lists all the Universal decoders and their capabilities
I noticed you've edited the numbers station catagory with the info from my user talk page , Can i wipe out my talk page now since it seems you have everything ?--Mbeam (talk) 13:51, 29 March 2016 (NZDT)
Yup! Thanks for that :) --Cartoonman (talk) 16:28, 29 March 2016 (NZDT)
hey, i was wondering what software you use for the "phase plane" plots like the one on the STANAGNATO Standardization Agreement (STANAG), defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the North Atlantic Treaty Organization (NATO). 4285 page. --LV (talk) 17:21, 6 July 2016 (NZST)
Would you be interested in a possible solution for using audio .wav's generated from sdr# in the wiki so they dont need converted to mp3 to play ?
I installed a mediawiki and the html5mediator extension on a test server and made a few changes to the localsettings.php and html5mediator.php file to get it to work--Mbeam (talk) 15:07, 22 August 2016 (NZST)
That sounds great, I'd really like to see it. you can send the details to the sigidwiki email (I personally check it). I think having the flexibility to playback wav files is a good one, especially since the popular SDR# only outputs wav format, and people wouldn't be privy to convert it to mp3. --Cartoonman (talk) 01:02, 23 August 2016 (NZST)
Email sent the the sigidwiki gmail account with link to my test wiki + instructions on how i edited it--Mbeam (talk) 11:54, 23 August 2016 (NZST)