406.3375 P25

[otrebla]

Has anyone ever heard activity on this frequency before? I am receiving 2 or 3 bars on the 785 when the frequency is active in Sheboygan Co.

 

[otrebla]

After listening longer, its clear the users are postal inspectors. I got a few unit numbers, ida6192, ida6157, ida5869 and ida4177. I'm still not sure where this signal is coming from.

 

[SCPD]

It is postal inspectors. they also run encryption on that fraquency. When I hear them using encryption only one side of the conversations is encrypted. I guess they don't know how to press the button or flip the switch:lol:

 

[RevGary]

Are you certain that it is encryption? If they are using a combined P-25 / analog system, that is one of the characteristics of such a system.

 

[otrebla]

It is postal inspectors. they also run encryption on that fraquency. When I hear them using encryption only one side of the conversations is encrypted. I guess they don't know how to press the button or flip the switch:lol:

It sounds similar to Milwaukee's postal inspector frequency. The base is encrypted and the mobiles are usually clear. The signal may be coming from western Michigan. It sounded like a inspector said he would be 10-7 in "Cadillac".

 

[otrebla]

I congratulate the person who figured out where this signal was coming from.

I never would of thought, Milwaukee.

 

[kc9kfj]

It sounded pretty strong when I heard it in Racine.I heard activity on it for two days at different times.Was there possibly a band opening if the signal did not come from Milwaukee?I submitted the channel to the database.If I am wrong,please correct me.

 

[otrebla]

I didn't think the signal was coming Milwaukee because, the postal inspectors were already using 409.9375, which has a much stronger signal.

Perhaps 406.3375 is the lower power local channel.

 

[mas]

If the Monitoring Times Fed Files are correct, 406.3375 originates from the Chicago area.

 

[kc9kfj]

If the Monitoring Times Fed Files are correct, 406.3375 originates from the Chicago area.

That could be,I did notice the signal was stronger when I was in Kenosha.Also,I heard the inspector call "cadillac control"on the Milwaukee frequency.So maybe that is a callsign/code for dispatch?

 

[OpSec]

I'm sure there are many local "nets" wireline linked into a control center for dispatching, etc. It's a common fed thing to do.

I also wouldn't be surprised if that channel wasn't down in Chitown on a tall building (Sears, Hancock etc)

 

[SCPD]

If this freq is from chitown it has really good range. I can receive it up here in west bend with no problems, even if it on a tall building.