SDS200 DMR with a Control Channel?

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dnadareski

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Feb 20, 2012
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18
Location
Lunenburg, MA
I have a SDS200 with DMR key activated.
I programmed Leominster, MA UMASS Hospital with the 14 frequencies found on FCC Website.
I set it up as conventional and I hear a control channel.
I also hear the staff talking on some of the other frequencies and it shows as DMR with Slots 1 and 2 alternating.
So I programmed it as both DMR, and both P25 options under my favorite lists.
The only one I hear audio on is the conventional programming.
I am not great at programming and I use the Sentinel Software.
I also bought ProScan software thinking it would help, but it seems complicated also.
I figured out alot on ProScan, but I think I should be able to program it on Sentinel.
I have been searching for months on the Internet and I am looking for a simple set of instructions.
I think it is a Control Channel and I hear it occasionally on other Frequencies sometimes.
I don't think this small hospital uses MDTs, so I think it may be Control Channel.
I could really use some help here.
If you have suggestions, please don't be upset if I ask for specific assistance.
Maybe it is the LCN thing that I don't completely understand from other forums.
I am including audio I exported from ProScan to hear if this is a data channel.
It only let me upload a zip file.
Thank you for any suggestions
451.325000
451.900000
456.325000
456.900000
461.912500
461.925000
463.350000
463.462500
464.775000
466.912500
466.925000
468.350000
468.462500
469.775000
 

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hiegtx

Mentor
Premium Subscriber
Joined
May 8, 2004
Messages
8,745
Location
Dallas, TX
I have a SDS200 with DMR key activated.
I programmed Leominster, MA UMASS Hospital with the 14 frequencies found on FCC Website.
I set it up as conventional and I hear a control channel.
I also hear the staff talking on some of the other frequencies and it shows as DMR with Slots 1 and 2 alternating.
So I programmed it as both DMR, and both P25 options under my favorite lists.
The only one I hear audio on is the conventional programming.
I am not great at programming and I use the Sentinel Software.
I also bought ProScan software thinking it would help, but it seems complicated also.
I figured out alot on ProScan, but I think I should be able to program it on Sentinel.
I have been searching for months on the Internet and I am looking for a simple set of instructions.
I think it is a Control Channel and I hear it occasionally on other Frequencies sometimes.
I don't think this small hospital uses MDTs, so I think it may be Control Channel.
I could really use some help here.
If you have suggestions, please don't be upset if I ask for specific assistance.
Maybe it is the LCN thing that I don't completely understand from other forums.
I am including audio I exported from ProScan to hear if this is a data channel.
It only let me upload a zip file.
Thank you for any suggestions
451.325000
451.900000
456.325000
456.900000
461.912500
461.925000
463.350000
463.462500
464.775000
466.912500
466.925000
468.350000
468.462500
469.775000
If you look closely at the license, they are only authorized to use DMR. No guarantee that they might be using P25 at times, but they are not licensed for it.

If I were programming this, I would only use these frequencies:
83811
That's the first seven on the license. The Class code FB2 is for a repeater. The rest of the frequencies, tagged as MO, are probably being used simplex, or more likely, inputs to the repeaters. The first three FB2 frequencies are in Leonminster. The other sets of two each are for other sites in the area.

I would suggest programming the first 3, 451.325, 461.925, and 463.4625, into a DMR OFT system (One Frequency Trunked). Be sure & set that as using ID Search. Leave the Color Code in Search mode until you can verify what is being used.

Though these are licensed as Conventional, using an OFT system lets you see the color code, and TGIDs in use.

If you are seeing activity on all three frequencies at Leonminster, you could try entering this as a DMR Trunked system, then use the LCN finder option to see if they are using as a trunked system, and if so, what LCN is assigned to each frequency.

For the other two sites, Finchburg and Clinton, have two frequencies apiece. Program those as OFT as well, in ID Search mode, and see if you see various TGIDs on them as well.
 

dnadareski

Member
Joined
Feb 20, 2012
Messages
18
Location
Lunenburg, MA
Wow, this is really great information. I appreciate both postings. It may take me some time to try what you suggested. I have to dig into the manual again. I really hope this works for me. Thank you very, very much. I will let you know what works. I learned so much from these postings.
 

dnadareski

Member
Joined
Feb 20, 2012
Messages
18
Location
Lunenburg, MA
Thank you for the previous information. I finally got the sound working by using MotoTRBO. I was unable to get any other method to work. I really appreciate your guidance, Once I get this totally working, I will submit my information to Radio Reference for other users.
 

W1KNE

Owner ScanNewEngland.
Database Admin
Joined
Feb 15, 2010
Messages
962
Location
Taunton, MA
The UMass Memorial Health Alliance system is a DMR Capacity Plus trunked system.
I only IDed two frequencies being used as part of the trunk in Leominster.
461.9125 and 463.4625. (Two other hospitals as part of the system, Fitchburg and Clinton also have two frequencies used).

The talkgroup convention is the same amongst the hospitals.
Same with the color code (CC 04).
My monitoring of the system aligns with most of what you have as well.

TG 109 was/is used for Patient/Nurse operations. All the comms were medical in nature.

TG 113 is Security

TG 115 I was never able to ID, and never saw TG 102, which you submitted either.

I need to take a trip and see if Marlboro hospital is also using the same type of system.
 
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