[MilCom] Air/air comms on 141.575 NBFM

[Larry Van Horn]

Hummm, someone didn't check out the May MT Milcom column. ;-))))

Morning Kevin and all.

141.575 is a CAP LMR freq. It is being used as a Command and Control Simplex 
freq nationwide and comms here should be using nfm and Analog/P25 
modulation.

If your into CAP comms, here is the latest confirmed list of CAP freqs 
nationwide. These new freqs are all part of their new narrowband bandplan.
Standard disclaimer applies here. No classified material was used to compile 
this report, just pure old fashion monitoring. Isn't the search button a 
marvelous invention?

139.8750  141.0000  141.5750  143.5500  143.6250  143.600  143.7000 
148.1250  148.1375  148.1500  149.2750  150.2250  150.5625

National CAP Plan (Supposedly Zone 1 in all the new ground-only radios)

141.5750 Simplex 127.3 Hz Command Control <Command Control 1>
141.0000 Simplex 131.8 Hz Command Control <Command Control 2>
149.2750 Simplex 141.3 Hz Air-to-Air <Air 1>
150.5625 Simplex 151.4 Hz Air-to-Air <Air 2>
150.2250 Simplex 162.2 Hz CAP Guard Channel <Guard 1>
139.8750 Simplex 173.8 Hz Tactical/Miscellaneous use <TAC 1> (also used on 
the Canadian Border as an input to the 148.1250 repeaters)
148.1250 Simplex 100.0 Hz Primary Talk-Around <PA TA>
148.1500 Simplex 100.0 Hz Secondary Talk-Around <PB TA>
148.1375/143.6250 203.5 Hz Airborne/Tactical Repeater <R-67>
148.1375/143.6250 192.8 Hz Airborne/Tactical Repeater <R-68>
148.1375/143.6250 131.8 Hz Airborne/Tactical Repeater <R-69>
148.1375/143.6250 162.2 Hz Airborne/Tactical Repeater <R-70>
148.1250/143.5500 203.5 Hz Airborne/Tactical Repeater <R-63>
148.1250/139.8750 Canadian Border repeaters
148.1500/143.7000 203.5 Hz Airborne/Tactical Repeater <R-64>
148.1500/143.6000 Canadian Border repeaters

There is more to all this, but that is about 2,000 words in the May issue. 
;-)))

As always, field reports to my email address are always appreciated and that 
includes airshow reports which have been down this year. If you are using 
the MT Airshow Guide and make an airshow, we can really use your report of 
what you heard or freq n the list that you didn't hear. It all helps me sort 
out the list for the next year. So if you make a show I would sincerely 
appreciate your report.

73 de Larry

Larry Van Horn, N5FPW
Brasstown, NC USA
MT Assistant/Review/Technical Editor
Milcom/What's New/First Look Columnist
Milcom Monitoring Post at
http://mt-milcom.blogspot.com/

----- Original Message ----- 
From: "Kevin O'Rourke" <kevin.orourke1 at comcast.net>
To: "Milcom listserver" <milcom at mailman.qth.net>
Sent: Monday, June 14, 2010 3:36 PM
Subject: [MilCom] Air/air comms on 141.575 NBFM


> Hearing air/air comms now (2:30p CDT Monday) between two aircraft (IDing
> as '9970' and '1150') on 141.575 Mhz NBFM (NOT in AM mode) from the
> western burbs of Chicago.  Destination appears to be Columbus (Ohio?).
>
> Anyone know who this might be?
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