SDS100/SDS200: Uniden SDS100 DMR Wildcard Talkgroup

[idle00955]

I want to monitor a dmr frequency. But I don’t know the CC or time slot or Talkgroup. Will this scanner just keep it open so I can hear all traffic?

 

[ka3jjz]

It looks like it will if you set it for Color Code search, ID Search and use a dummy TGID in the department. See hiegtx's excellent writeup on the subject...

Entering an Unknown MOTOTRBO system using Sentinel - The RadioReference Wiki

wiki.radioreference.com

You can then use the various tools to obtain information.

But before you do that, did you check the database to see if it's already there? Mike

 

[idle00955]

It looks like it will if you set it for Color Code search, ID Search and use a dummy TGID in the department. See hiegtx's excellent writeup on the subject...

Entering an Unknown MOTOTRBO system using Sentinel - The RadioReference Wiki

wiki.radioreference.com

You can then use the various tools to obtain information.

But before you do that, did you check the database to see if it's already there? Mike

This is a local county jail. They are DMR but nothing is listed but the frequency.

 

[ka3jjz]

If it's a One Frequency trunk, or just a conventional DMR frequency, the above writeup won't do it - that is set up for a MOTOTRBO system. And we're assuming here you have the DMR option installed (it's a paid upgrade)

Just to be complete, you might want to check the Scan New England wiki - if it's not there, no harm done.

Make sure that when you gather all the necessary data that you submit it to the database. This is the way information like this gets entered.

Mike

 

[idle00955]

I found it but the scanner won’t play the audio. It’s all digital noise. Who knows. My dmr mobile doesn’t pick it up at all. But the scanner does.

 

[idle00955]

If it's a One Frequency trunk, or just a conventional DMR frequency, the above writeup won't do it - that is set up for a MOTOTRBO system. And we're assuming here you have the DMR option installed (it's a paid upgrade)

Just to be complete, you might want to check the Scan New England wiki - if it's not there, no harm done.

Make sure that when you gather all the necessary data that you submit it to the database. This is the way information like this gets entered.

Mike

Yes dmr upgrade In scanner. It’s a one frequency dmr.

 

[hiegtx]

Yes dmr upgrade In scanner. It’s a one frequency dmr.

If you have it in a One Frequency Trunked (OFT) system, be sure:

• That you have a Department created for the OFT system
• Also, that Department must have at least one talkgroup in it. I simply use TGID 1 as a placekeeper until I see actual talkgroups in use.
• Until you can verify the color code, leave that set as 'Search"
• Also, under the Systems Options tab (in Sentinel), or in the Options if editing in the scanner, that you have it set for ID Search.

If there is no department, or if that Department is empty, the scanner will not try to scan your system. What frequency are you trying to monitor?

 

[idle00955]

If you have it in a One Frequency Trunked (OFT) system, be sure:

• That you have a Department created for the OFT system
• Also, that Department must have at least one talkgroup in it. I simply use TGID 1 as a placekeeper until I see actual talkgroups in use.
• Until you can verify the color code, leave that set as 'Search"
• Also, under the Systems Options tab (in Sentinel), or in the Options if editing in the scanner, that you have it set for ID Search.

If there is no department, or if that Department is empty, the scanner will not try to scan your system. What frequency are you trying to monitor?

It’s one frequency and I have it set as dmr one frequency. This is not a trunked system. 460.0500 is the frequency

 

[hiegtx]

Hillsborough County?

I realize you are not trying to program a full trunked system. But, for DMR, as well as NXDN, if you enter a frequency as conventional, you will not see any talkgroup information. But if, instead, you enter it as a One Frequency Trunked system, that then will allow you to see any talkgroup information, as well as which slot was used.

The emission code on the license, 6K25F3E, is not one that signifies DMR.

The FCC site identifies it as an emission code used for data. That could be why you are hearing 'digital noise', instead of a voice transmission.

https://fccid.io/Emissions-Designator/6K25F3E

If you know, for sure, that DMR is in use, they are doing so without being correctly licensed.

 

[idle00955]

Hillsborough County?

I realize you are not trying to program a full trunked system. But, for DMR, as well as NXDN, if you enter a frequency as conventional, you will not see any talkgroup information. But if, instead, you enter it as a One Frequency Trunked system, that then will allow you to see any talkgroup information, as well as which slot was used.

The emission code on the license, 6K25F3E, is not one that signifies DMR.

The FCC site identifies it as an emission code used for data. That could be why you are hearing 'digital noise', instead of a voice transmission.

https://fccid.io/Emissions-Designator/6K25F3E

View attachment 106060

If you know, for sure, that DMR is in use, they are doing so without being correctly licensed.

Well I was told they are DMR. But if I set the scanner as search mode it does pick up the frequency but when they key up it’s all digital noise. So maybe they are not dmr and they are p25? I’m not sure at all.

 

[idle00955]

Hillsborough County?

I realize you are not trying to program a full trunked system. But, for DMR, as well as NXDN, if you enter a frequency as conventional, you will not see any talkgroup information. But if, instead, you enter it as a One Frequency Trunked system, that then will allow you to see any talkgroup information, as well as which slot was used.

The emission code on the license, 6K25F3E, is not one that signifies DMR.

The FCC site identifies it as an emission code used for data. That could be why you are hearing 'digital noise', instead of a voice transmission.

https://fccid.io/Emissions-Designator/6K25F3E

View attachment 106060

If you know, for sure, that DMR is in use, they are doing so without being correctly licensed.

Even in search mode shouldn’t the scanner be able to pick up what they are using? P25 or dmr etc…

 

[ka3jjz]

You might try asking in the NH forum and/or in the Scan New England website to see if others know about this frequency....Mike

 

[hiegtx]

Well I was told they are DMR. But if I set the scanner as search mode it does pick up the frequency but when they key up it’s all digital noise. So maybe they are not dmr and they are p25? I’m not sure at all.

That's not a P25 emission code either.
I did a search on the Digital Frequency Search page, for DMR licenses in your county. I did not see any license for the county to use DMR. Several hospitals, school districts, and businesses are licensed for DMR, but no public safety agencies, county nor cities.

DMR Frequency Search Results

Radio frequency database search tool to identify Digital Mobile Radio, DMR, users by county and state.

digitalfrequencysearch.com

Look at this frequency:

FCC Callsign WPLX346 (HILLSBOROUGH, COUNTY OF)

FCC Callsign WPLX346 (HILLSBOROUGH, COUNTY OF)

www.radioreference.com

Licensed to the county, and noted that they will use it for jail security. Note that there is no repeater listed. So if they are using mobiles only, simplex, you would have to be close to hear them. It's analog, not digital (P25) and not DMR.

 

[idle00955]

That's not a P25 emission code either.
I did a search on the Digital Frequency Search page, for DMR licenses in your county. I did not see any license for the county to use DMR. Several hospitals, school districts, and businesses are licensed for DMR, but no public safety agencies, county nor cities.

DMR Frequency Search Results

Radio frequency database search tool to identify Digital Mobile Radio, DMR, users by county and state.

digitalfrequencysearch.com

Look at this frequency:

FCC Callsign WPLX346 (HILLSBOROUGH, COUNTY OF)

FCC Callsign WPLX346 (HILLSBOROUGH, COUNTY OF)

www.radioreference.com

Licensed to the county, and noted that they will use it for jail security. Note that there is no repeater listed. So if they are using mobiles only, simplex, you would have to be close to hear them. It's analog, not digital (P25) and not DMR.

That’s weird because someone in 2016 heard dmr and a repeater. Plus on that frequency I’m getting digital noise.

 

[hiegtx]

Even in search mode shouldn’t the scanner be able to pick up what they are using? P25 or dmr etc…

If you leave the audio type as all, then your scanner would be able to receive analog or P25 signals. Also DMR (or NXDN) if you have those upgrades. But if that is really being used strictly for data, it's likely a data syntax that the scanner cannot decode. That's your digital noise.

That’s weird because someone in 2016 heard dmr and a repeater. Plus on that frequency I’m getting digital noise.

As far as what might have been heard in 2016, did someone actually hear voice traffic, using DMR, or did they hear the same digital noise you get, and presumed it was DMR.

As Mike has suggested, use the Report (lover left corner of one of your posts) to request that your thread be moved to your state forum. And also try Scan New England for information.

As I've noted, they are not licensed for DMR, but that does not guarantee that they are not using it. Several years ago, I ran into a rural county, west of my metro area, where both the county Sheriffs Office, as well as the PD in the county seat, both started using P25 digital, though neither was licensed for that mode.

 

[idle00955]

If you leave the audio type as all, then your scanner would be able to receive analog or P25 signals. Also DMR (or NXDN) if you have those upgrades. But if that is really being used strictly for data, it's likely a data syntax that the scanner cannot decode. That's your digital noise.

As far as what might have been heard in 2016, did someone actually hear voice traffic, using DMR, or did they hear the same digital noise you get, and presumed it was DMR.

As Mike has suggested, use the Report (lover left corner of one of your posts) to request that your thread be moved to your state forum. And also try Scan New England for information.

As I've noted, they are not licensed for DMR, but that does not guarantee that they are not using it. Several years ago, I ran into a rural county, west of my metro area, where both the county Sheriffs Office, as well as the PD in the county seat, both started using P25 digital, though neither was licensed for that mode.

They heard roll call. So yea voice. My sds100 doesn’t have the paid upgrade for NXDN so maybe they are on that.

 

[hiegtx]

They heard roll call. So yea voice. My sds100 doesn’t have the paid upgrade for NXDN so maybe they are on that.

Well, they are not licensed (currently) for NXDN either.

 

[idle00955]

Well, they are not licensed (currently) for NXDN either.

Well geez what are they using then. Lol

 

[werinshades]

Have you tried Custom Search in the band (460Mhz-461Mhz) to listen for traffic? You'll have a better idea if they're using the frequency and in what mode.

 

[RoninJoliet]

Program the frequency, set it to digital, choose F+6 , mode1 showsDMR or NXDN or P25, mode2 shows CC or RAN , mode3 shows slot or UID