[Scan-DC] Something different -- ACARS (131.55 MHz)

[Joel Kahn]

Andy:
I beat you by about 3 months!  I loaded the software on an old laptop and I
have used my old RS 2096 and my HP-1, and surprisingly, the analog radio
works better!  I am using the collapsible antenna that came with the radio,
and reception is spotty, but I still get quite a few hits.

It is fun when I am relaxing with nothing else to do!

JK

-----Original Message-----
From: scan-dc-bounces at mailman.qth.net
[mailto:scan-dc-bounces at mailman.qth.net] On Behalf Of Andrew Clegg
Sent: Monday, March 26, 2012 9:16 PM
To: mike agner
Cc: scan-dc at mailman.qth.net
Subject: Re: [Scan-DC] Something different -- ACARS (131.55 MHz)

Mike,

Thanks for the info. It reminded me that I discovered exactly what you
said--it works best if you leave the squelch open. I used an Icom R7000 and
R8500, and a Bearcat 247T. It worked on all three. No mods needed. 

Andy

Typos courtesy of my iPhone

On Mar 26, 2012, at 21:08, "mike agner" <ka3jjz1 at verizon.net> wrote:

> The RR Wiki has a short article on the subject, along with the other 
> freqs ACARS has been heard on...
> 
> http://wiki.radioreference.com/index.php/ACARS
> 
> It would be rather difficult to scan these freqs, since you need to 
> keep the squelch open to hear the sync tone, unless your scanner's 
> squelch opens up fast enough - it comes across very fast (I want to 
> say 100ms, but I could be wrong...). However as noted in the article, 
> you don't need to modify your scanner at all (contrary to what others 
> might
> think...) to be able to get a good clean data signal
> 
> I used to fool around with this a bit; some companies will use the 
> alternate freqs just to get away from the congestion on 131.55. Those 
> of you that have fooled around with amateur packet radio will 
> understand this; packet collisions result in lost data, and there are 
> times when that simply won't do...
> 
> HTH...Mike
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