AirNav ACARS Decoder

[marcp90]

Anyone familiar with AirNav Systems ACARS Decoder. I'm quite confused on how to get it to decode transmissions from a reciever. I fallowed the instructions given by AirNav:
To start receiving ACARS data, follow these steps:
1- Connect the audio output from your airband receiver to the input (LINE-IN) of your Sound Card using a suitable audio cable.
2- Next tune your airband receiver to the appropriate VHF frequency (click here for a frequency listing) and turn the squelch fully off.
3- Start AirNav ACARS Decoder 2.
4- Maintain the Signal Strength Display indicator (top of of AirNav main window) with levels from 40% to 70% when only noise is received.
5- ACARS data will start to be decoded when received.
I hear data on 131.55 which sounds like ACARS but the program is not decoding them.
I am using a RS Pro-96.

 

[ka3jjz]

Do you have your squelch wide open? You should hear the usual receiver noise thru your speakers. The reason is simple; there's a tone at the beginning of the transmission that the decoder must hear, or it won't work. Most consumer grade scanners squelch doesn't open up fast enough to hear it.

73s Mike

 

[SkipSanders]

Assuming you used 'line in' on your sound card, you need to make sure that you selected it as the recording source in your computer's audio mixer/volume control panel. Only one source is selected at once, and it's usually the microphone input that's selected by default.

 

[marcp90]

I fallowed all your instructions, selected line in as the recording source and opened up the squelch and it still does not work. I am going to E-Mail Airnav and see if they have any suggestions as well.

Thanks for help