[FedCom] Freq Help

[John Wilson]

   172.0750 mhz. along with 172.0650 and 172.050  mhz. are assigned to 
the Commerce Dept.  and are used  ACSB testing at airports.  Monitoring 
Times magazine within the last few years had an article on this project. 
 The project has something to do with enhancing private pilot operations 
at private and commercial airports/airfields....I think.  Email MT. 
 Somebody probably can supply you more details.   Then again, 167.9 hz. 
is the common FBI pl.  Normally the FBI does not operate unencrypted. 
 167.9 pl also is used by ATF, DOE, FEMA, HHS, INS and US Marshalls. 
 With the reorganization of some agencies being incorporated into  
Homeland Security its' hard to say.  It could also be a contractor for 
the federal government.  171.1000 mhz. seems to be a popular federal 
government contractor P25 voice frequency.  Keep listening for more 
possible insight..

MJ Cleary wrote:

>Hi all,
>
>Today I found a freq that wasn't found active before in numerous searches. Freq is 172.075 MHz with Tone of 167.9.
>Traffic is mostly encrypted with one side in the clear sometimes. Callsigns heard were ECHO 1 and ECHO 3 and there was a clear transmission: "How was the airport?". Only other clear ones were radio checks. Answer was encrypted. My QTH is Charleston, SC. 
>
>Also found 172.050 MHz to be active this morning with two females in the clear one upstairs and one in a basement troubleshooting inoperative phone lines on their computers. They ended up calling Sprint.
>
>Ideas?
>
>
>Mark
>_______________________________________________
>FedCom mailing list
>FedCom at mailman.qth.net
>http://mailman.qth.net/mailman/listinfo/fedcom
>
>  
>