Listening to Businesses/Agencies that Use a Set of Radios

[Bswartz95]

If a business or agency has a set of 10 to 12 Motorola radios for communication, is there a way to scan for the frequencies? I know these radios have about a 5 to 8 mile radius. Mainly used for campus security.

I've only used my SDS100 for police, fire, and airports. Looking to listen to some other stuff.
Thanks!

 

[Whiskey3JMC]

If a business or agency has a set of 10 to 12 Motorola radios for communication, is there a way to scan for the frequencies? I know these radios have about a 5 to 8 mile radius. Mainly used for campus security.

Campus in question is???

 

[Bswartz95]

Campus in question is???

It’s a local school district not listed in the database. Reynoldsburg Schools (columbus Ohio suburb).

 

[Whiskey3JMC]

Could be any of these...Have fun!
I'm seeing DMR emissions in them so it's possible they could be using that voice mode. Be sure you're monitoring with a DMR capable receiver

 

[Bswartz95]

Could be any of these...Have fun!

Holy smokes! Haha. Thank you. I’m assuming there’s lists for other districts around the area? I must have not searched correctly. Lol.

 

[Whiskey3JMC]

Just enter the agency (licensee) name in the "Search Ohio FCC licensees" box on this page

 

[Bswartz95]

Just enter the agency (licensee) name in the "Search Ohio FCC licensees" box on this page

Got it. Thank you. I assume I’d program as “conventional”? I really appreciate your help. Made this easy!

 

[memo124]

Could be any of these...Have fun!
I'm seeing DMR emissions in them so it's possible they could be using that voice mode. Be sure you're monitoring with a DMR capable receiver

Question? How can you tell it's a DMR system or frequencies? Thanks in advance.

 

[Whiskey3JMC]

Question? How can you tell it's a DMR system or frequencies? Thanks in advance.

When you click on a license to examine the frequencies, look at the "Emissions" column. 7K60FXE indicates DMR TDMA voice (two slot). Source here. However just because the emission is listed doesn't guarantee its use 100%, it's highly probable DMR is in use though I have seen DMR emissions on licenses where the agency still uses analog

 

[ecps92]

The RR DB is one where Confirmed [PL/DPL/NAC, DMR info] has been submitted as actually in use [heard Over the Air - OTA] by members here.
The FCC DB is just those licensed for a freq - doesn't mean they ever used them, or they sit in a closed [uncharged] for the O-$h!t moments.

IF / when you do find the Tones, verify [listen for awhile, as freq's are shared] then do a DB submission to add to the RRDB wealth of info

It’s a local school district not listed in the database. Reynoldsburg Schools (columbus Ohio suburb).

 

[Bswartz95]

When you click on a license to examine the frequencies, look at the "Emissions" column. 7K60FXE indicates DMR TDMA voice (two slot). Source here. However just because the emission is listed doesn't guarantee its use 100%, it's highly probable DMR is in use though I have seen DMR emissions on licenses where the agency still uses analog
View attachment 116193

I think I found what I want. It looks like each frequency has different emissions? Does it appear that this would work without a software upgrade on my SDS100?

 

[memo124]

When you click on a license to examine the frequencies, look at the "Emissions" column. 7K60FXE indicates DMR TDMA voice (two slot). Source here. However just because the emission is listed doesn't guarantee its use 100%, it's highly probable DMR is in use though I have seen DMR emissions on licenses where the agency still uses analog
View attachment 116193

Very cool information. You learn something new everyday. Great reference item. Thank you for your help.

 

[Whiskey3JMC]

I think I found what I want. It looks like each frequency has different emissions? Does it appear that this would work without a software upgrade on my SDS100?

I don't know, you'll have to listen and find out. If DMR is used you'll hear the data emissions when units transmit which sound like this on a non DMR-capable receiver (turn volume down, clip is loud)

 

[ecps92]

Yup, seems they are licensed for both DMR and Analog - which one is used ? Only by programming them in and a long time of listening will make that determination.

My local School District licensed many, and between [Clyde - RIP] and others we spent months listening, and found most of the traffic occured during AM/PM - Drop Off/Pick up [YMMV] so listen away and share back what you do find.

I think I found what I want. It looks like each frequency has different emissions? Does it appear that this would work without a software upgrade on my SDS100?

 

[GregOH]

Just enter the agency (licensee) name in the "Search Ohio FCC licensees" box on this page

Cool, never knew that. I just take my Pro-135 with me and find the frequency with Signal Stalker.

 

[Whiskey3JMC]

Even better, I use maprad.io to pinpoint licensees. Gives you more detailed search options and a nice map view

 

[tweiss3]

I think I found what I want. It looks like each frequency has different emissions? Does it appear that this would work without a software upgrade on my SDS100?

Put them in a list and start listening.

 

[slicerwizard]

I just take my Pro-135 with me and find the frequency with Signal Stalker.

Unlikely to work on DMR subscribers.

 

[Whiskey3JMC]

Unlikely to work on DMR subscribers.

More like "won't work" on DMR subscribers

 

[sonm10]

Make sure you have the DMR upgrade for your radio. Enter frequencies conventionally and watch the digital status. If you see DMR it is conventional DMR. If you see Cap+, Con+, DT3, etc. will be trunking. NFM of course means narrow fm, or 2.5 deviation analog.