[Scan-DC] Aviation route frequency -- 129.45 MHz
Charley Armstrong
armstrong.c at verizon.net
Wed Apr 8 12:52:28 EDT 2009
123.45 is also a common a-a freq for pilots flying in formation over
the US...
CA
Annapolis
On Apr 8, 2009, at 12:02 PM, Steve Thompson wrote:
> This is a superb list of the ARINC freqs, both VHF and HF. I like to
> listen on HF, especially to the overseas freqs when conditions are
> good (as
> they soon will be again).
>
> Note the small box on the pacific chart for "PAC Air-to-Air
> 123.45." This
> is actually a pilot "chat" frequency and gets quite a lot of use
> between
> planes when they are out of touch on VHF with ARINC. They often
> exchange
> weather and ride info and it's good listening. Unfortunately,
> because it's
> only used over the ocean routes, you're dependent on the pilot of your
> United flight leaving Channel 9 in operation when he finishes with
> ATC. Then it's good listening. However, on most of my flights, they
> switch Channel 9 to music as soon as they get beyond VHF range of
> ATC. Bummer.
>
> I've heard this freq in use over the Atlantic, too.
>
> Seems to me, based on recent flights, that fewer pilots are making
> Channel
> 9 available. When asked (through the flight attendant, of course),
> they
> say that there's a malfunction. I've seen reference to this being a
> minor
> protest by United pilots who are ticked-off against their employer.
>
> I often fly with a scanner but I have (so far) resisted the
> temptation to
> snake the headphone cord into my briefcase and monitor my way across
> the
> country or ocean.
>
> Steve, N4TX
>
> At 01:52 PM 4/7/2009, Eric C. Carlson wrote:
>> That is the ARINC En Route Service. Frequencies and coverage maps
>> may
>> be found here:
>> http://www.arinc.com/products/voice_data_comm/air_ground_radio_svc/jepp_charts.html
>>
>> -Eric
>>
>> On Tue, Apr 7, 2009 at 12:21 PM, Andrew Clegg <w4jecom at w4je.com>
>> wrote:
>>> A couple of weeks ago I discovered a cool aviation route
>>> frequency, 129.45
>>> MHz. It is licensed to AIRINC, with a base station at National.
>>> Planes in
>>> route use this frequency to get phone patches to an aviation
>>> services
>>> company in San Francisco. It is used for a variety of purposes,
>>> but one of
>>> the more interesting (and more frequent) uses is to report
>>> problems with
>>> passengers, such as medical issues. On this frequency, the pilots
>>> can be
>>> patched through to a company called "Medstat" that has doctors on
>>> call 24/7
>>> who can talk to the pilot and assess the seriousness of the
>>> medical issues,
>>> and help decide whether the pilot needs to divert for a quick
>>> landing or
>>> have paramedics waiting upon a scheduled arrival.
>>>
>>> Over the last two weeks, I have been recording this frequency
>>> automatically
>>> using Scanrec. I get about one hour or so of activity for each 24
>>> hours of
>>> recording. From where I am I can hear the base station at
>>> National, and
>>> usually I can also hear the planes. However, even if you are not
>>> within
>>> reach of National, you could probably hear the plane side of the
>>> conversation for a couple hundred miles, and it is usually the
>>> plane side
>>> that is the more interesting ("we are unable to get a pulse;
>>> passenger is
>>> unconscious;" etc.).
>>>
>>> So far I have heard several serious medical issues, two unruly
>>> passenger
>>> incidents, and one pilot that was getting worried because his main
>>> and
>>> alternate airports were both rerouting due to weather and the
>>> plane's fuel
>>> was running low (they ended up being routed to Allentown PA
>>> instead of
>>> Boston).
>>>
>>> Anyway, for those who haven't heard this one before, it can be quite
>>> interesting. If you have other specific route frequencies that are
>>> used for
>>> equally interesting comms, I would be interested to hear about them!
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