163.200MHz analog

[mike_s104]

This morning as I went East on RT7 over Mt. Weather, I heard what sounded like an open mic. I looked at the scanner and it was on 162.300MHz (I had it programmed in from here http://radioreference.com/modules.php?name=RR&aid=1594 US Marshall's, near the bottom. I had it in search for the subtone which I should not ave for P25). the signal was dropping out some and since I was driving, I didn't get the subtone but I did see it flash for a split second. I think it may have been 136.5Hz. anyone else hear this? I heard no voice or anything else, just an open mic.

 

[fmon]

Correct, P25 will not have tone.

 

[mike_s104]

Correct, P25 will not have tone.

thanks, I knew that. I was posting mostly because it was an open mic and I heard it for over 30mins or more. just wondering if anyone else heard what I did.

 

[mike_s104]

heard it again on the way home tonight. I can verify the subtone was/is 136.5Hz.

 

[freqhopping]

I just checked out this freq. I have it with one bar showing, no amp. It's dropping out for a few seconds at a time and there is an occasional weak beep.

 

[mike_s104]

I just checked out this freq. I have it with one bar showing, no amp. It's dropping out for a few seconds at a time and there is an occasional weak beep.

yeah, odd. I had a signal from the top of RT7 on Mt. Weather all the way to Ashburn if I turned the squelch down. this is with nothing other then on a 396T with a RS 800MHz antenna.

 

[tuttleje]

According to some searching I did, 163.200 MHz is used by the United States Marshall's Service as "F2". I wonder if they were using it as a "bug" frequency....and no one was in the location/car that was bugged?

 

[mike_s104]

According to some searching I did, 163.200 MHz is used by the United States Marshall's Service as "F2".

that's what the link showed only in P25.

 

[tuttleje]

Prior to retirement, I worked for an federal organization that used a secondary analog channel through a low power mobile repeater as a "bug" channel. It could be that the Marshall's Service is doing the same thing and is far enough away from Richmond that it would not interfere with the P25 radio system. From what I have seen, 163.200 MHz was analog before the switched to P25. The Colonial Parkway Police used 167.150 MHz analog as a primary channel...and then switched to using P25 on the same frequency. Just a possibility.

 

[mike_s104]

Prior to retirement, I worked for an federal organization that used a secondary analog channel through a low power mobile repeater as a "bug" channel. It could be that the Marshall's Service is doing the same thing and is far enough away from Richmond that it would not interfere with the P25 radio system. From what I have seen, 163.200 MHz was analog before the switched to P25. The Colonial Parkway Police did the same thing on 167.150 MHz analog...and then switched to P25 on the same frequency. Just a possibility.

thanks for the "inside" info. tomorrow I'll see what I find.

 

[mike_s104]

According to some searching I did, 163.200 MHz is used by the United States Marshall's Service as "F2". I wonder if they were using it as a "bug" frequency....and no one was in the location/car that was bugged?

I heard nothing other then dead air.