Software - UKHistoryHunter

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Radio Scanners
Purchasing a radio scanner is an expensive outlay and needless to say you want to to the most out of your scanner. Here are a few optional choices of software (some free and others shareware) you may consider trying to use.

What you do need to use this software is a 3.5mm cable with male stereo/mono plugs  at both ends. Cables like these are readily available  at most cheap discount stores like Poundland, Poundstretchers, or selective supermarkets.
If  not, you may have to go to your nearest Maplins, Radio Shack or other audio specialist who will supply these cables.
Once you have your cable you're good to go ! What are you waiting for? Ah yes, the software if you don't know about them already. Connect the cable to your headphone socket on the scanner and the other end into the line input on your soundcard, if using a laptop you may have to use the microphone input. Please note: your volume levels are critical with all the software mentioned in this subject. Unless you do not have the correct volume levels they will not decode your data signals.
After many weeks and hours of trial and error volume settings I finally managed to decode acars messages. Here are my settings:





My scanner volume set to 30. Have squelch turned OFF.

Here are the results (notice volume level showing at 15 on the bottom, circled in red).






The first piece of software is acarsd . It is for Linux and Windows (excluding Windows C E), this software is Freeware unless you are using it in a business enviroment (E.G to make profit out of the program if charging clients to have access to your server). Tune your scanner to an appropriate frequency listed below for your country, if it's not listed please do a Google search.

VHF ACARS Frequencies (AM)
    • 131.550 MHZ
      Primary Channel worldwide
    • 129.125 MHZ
      Additional channel for USA & Canada
    • 130.025 MHZ
      Secondary channel for USA and Canada
    • 130.425 MHZ
      Additional channel for USA
    • 130.450 MHZ
      Additional channel for USA & Canada
    • 131.125 MHZ
      Additional channel for USA
    • 131.450 MHZ
      Primary channel for Japan
    • 131.475 MHZ
      Air Canada company channel
    • 131.525 MHZ
      European secondary
    • 131.725 MHZ
      Primary channel in Europe
    • 136.700 MHZ
      Additional channel for USA
    • 136.750 MHZ
      Additional channel for USA
    • 136.800 MHZ
      Additional channel for USA
    • 136.900 MHZ European secondary
    • 136.925 MHZ
      ARINC European Channel
    • 136.850 MHZ
      SITA North American Frequency
    • 136.750 MHZ
      New European frequency
    • 131.850 MHZ
      New European frequency



If you've managed to get acarsd working , why not try using Virtual Radar. Please visit this site to download  free software.



My next piece of software is POC32 from baycom.de , this software is shareware and an excellent piece of software . As I have said before it is all down to volume levels. To get POC32 to decode almost perfectly (errors may creep in whilst decoding) I have my input level the same as the settings for acars at 100. Do not check the enable error correction and you'll have a much cleaner decoding. My whistler scanner volume is set to 30 although your volume settings may be lower (my AOR DV1 uses the Aux Output with a volume level of 17 and a squelch of 29). For obvious legal reasons, I have not included any sensitive personal information on what I have screencaptured.




This is a sample decoding to give you an idea of what you may see, you have three types of data, alpha, numerical and beep. The alpha is plain text messages (may include numerics) when decoded correctly, numerical is just numbers and no text, beep is just a beep that someone receives when paged.  Whatever you do, keep it legal and always abide the laws of your country. Do not publish personal sensitive information. For a list of known worldwide pocsag frequencies please visit globaltunters.com .
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