LMRN Technical Data Discussion

mbstone99

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I am seeing currently TG 20692 (RID 15006/752455/752492) & TG 20824 (RID 15006/752351/752567) active currently on the Hamilton site with encrypted traffic.

Matt
 

VA3ADP

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I am seeing currently TG 20692 (RID 15006/752455/752492) & TG 20824 (RID 15006/752351/752567) active currently on the Hamilton site with encrypted traffic.

Matt
Also saw those same TG's today in addition to 20825, 20827. Also 140021 had about 186 hits on it all Phase II all ENC off of Britannia.
 

gary123

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I got stuck out in the Tavistock area today so while having Tim's coffee and a Boston Cream donut, I was able to make this capture of a hospital patch. It was made off site 33.

At 14:03:55 you see the hospital radio being call alerted.
At 14:03:56 you see the TG being patched together. 20788 is the ER3 TG for London. 23104 is the hospital TG
At 14:04:01-05 you see the EMS unit talking to the hospital. 753173 is the hospital and 750799 is the EMS unit.
At 14:04:47 you see the EMS unit return to the local dispatch 20784 TG London East

I was literally right beside the Tavistock hospital. I did not capture any TX using the spectrum analyzer. Nor did any EMS units arrive at the hospital. The only other hospitals It could have been is Stratford, Woodstock or Ingersoll. Stratford would be my guess.

patch.jpg
 

gary123

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A small update. The Call Alert only goes out on the one tower. This should be the closest tower to the site but you never know. Knowing this is may be a bit easier to narrow down the Hospital.

Late in the day I saw this Call Alert to 752178 and patch between TG 23101 and 20788(ER3 London). I believe this to be the Tavistock Hospital
 

Enjoi19

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I'm seeing some 790xxx ID's chatting (encrypted) on 22205 today. I don't believe I've seen that range before and the talkgroup logged for the first time yesterday. Logged 22200 and 22203 on Wednesday as affiliating, but no one talking.
 

Gymbag

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A small update. The Call Alert only goes out on the one tower. This should be the closest tower to the site but you never know. Knowing this is may be a bit easier to narrow down the Hospital.

Late in the day I saw this Call Alert to 752178 and patch between TG 23101 and 20788(ER3 London). I believe this to be the Tavistock Hospital
There’s one problem to this, Tavistock doesn’t have its own hospital. Are you thinking Stratford Hospital? Most patients from the Tavistock area go to Stratford hospital. Tavistock is technically in Oxford County, but Perth EMS are closer than any Oxford EMS.
 

gary123

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Thanks Gymbag, I did not know that Tavistock is hospital-less.
The 23101 could also be the St Marys Hospital. I think that Woodstock hospital would be using the Woodstock tower. The same for Ingersoll's Hospital.
 

Gymbag

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Thanks Gymbag, I did not know that Tavistock is hospital-less.
The 23101 could also be the St Marys Hospital. I think that Woodstock hospital would be using the Woodstock tower. The same for Ingersoll's Hospital.
Perth has three hospital; Stratford, St. Marys and Listowel. Oxford also has three hospitals; Woodstock, Alexandra (Ingersoll) and Tillsonburg.
 
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Cambridge CACC has switched over to the new system. Waterloo Region started switching over ambulances on Wednesday, and Guelph/Wellington & Dufferin on Thursday.

There was also an interesting thing I heard from a Guelph/Wellington ambulance heading to Listowel hospital on 2024-05-23 (the day of the switchover):

7:43:20 am: Cambridge, 2192 departing scene Code 3 CTAS 3 to Listowel
7:43:30 am: 10-4

7:53:57 am: 2192, call Cambridge

7:54:04 am: Cambridge are you calling 2192?
7:54:07 am: That's 10-4, you can switch over to London
7:54:16 am: Copy. Is that London Zone? Or MOH Zone 1?

7:56:01 am: 2192, you're going to be switching over to the London talkgroup
7:56:10 am: Copy that

Are they getting rid of the Zone 1 and Region 1/2/3 talkgroups and replacing it with a talkgroup for each CACC instead? I would image it would be a lot simpler for both paramedics and dispatchers. Dispatchers now only have one regional talkgroup to monitor and all chatter on it would be relevant to them.
 

exkalibur

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Cambridge CACC has switched over to the new system. Waterloo Region started switching over ambulances on Wednesday, and Guelph/Wellington & Dufferin on Thursday.

There was also an interesting thing I heard from a Guelph/Wellington ambulance heading to Listowel hospital on 2024-05-23 (the day of the switchover):

7:43:20 am: Cambridge, 2192 departing scene Code 3 CTAS 3 to Listowel
7:43:30 am: 10-4

7:53:57 am: 2192, call Cambridge

7:54:04 am: Cambridge are you calling 2192?
7:54:07 am: That's 10-4, you can switch over to London
7:54:16 am: Copy. Is that London Zone? Or MOH Zone 1?

7:56:01 am: 2192, you're going to be switching over to the London talkgroup
7:56:10 am: Copy that

Are they getting rid of the Zone 1 and Region 1/2/3 talkgroups and replacing it with a talkgroup for each CACC instead? I would image it would be a lot simpler for both paramedics and dispatchers. Dispatchers now only have one regional talkgroup to monitor and all chatter on it would be relevant to them.
Currently (well, on FleetNet), there is a talkgroup for each CACC - IE, WIN CACC, WAL CACC, LON CACC etc... This is meant to be used by out-of-town ambulances to use while outside of their home CACC area. There is also a Zone 1 wide talkgroup, as well as Regional groups (1 for each region).

I would fully expect this to be duplicated on the new LMRN system as it is used quite frequently on FleetNet.
 

pokey

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Interesting find off the Mississauga tower this evening. Talkgroup 1012 had some sort of alert tone on RID 706624. Occurred several times with no audio following the tones. Sounded like the hospital patch alerts that were/are heard on FleetNet.
 

CDTbolt10033

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Monitoring Kitchener site 3 via SDR-Trunk. I have seen talkgroups 20625, 20626, and 20628.
I saw a call alert for 752190 sent by 773742 and there was a patch between 20628 and 23002 after the call alert. I am guessing that these are Cambridge CACC talkgroups and 23002 is a hospital patch talkgroup.
I am also seeing that 141.450 is a voice frequency as per SDR-Trunk.
I just saw 23003 in a patch as well with 20625 and 20626. Switched to DSD and I see subgroup 20627 activity.
 

gary123

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A few of us heavy into logging have made this .pdf. Most of the contents and steps will be familiar to the membership here. The document is to help those who have DSD or similar to recover logged data that they may not be aware they have. It also simplifies the need to 'monitor' the DSD output constantly. The hope is that this can then be used to add to the LMRN database.

Again, this is presented to help our less experienced members contribute to the database for the PSRN system. FYI, the steps will work equally well on other trunked systems such as Toronto, Hamilton, Metrolinx... etc.

CYA time. As always use at your own risk, RR is not responsible for the contents, no product is endorsed, there are warranties etc etc etc. Questions my be asked in DM to avoid filling the thread or hijacking the thread.
 

Attachments

  • DSD dump Contents.pdf
    236.9 KB · Views: 38

gary123

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There was a bit of an inversion last night. here are the capture results.

site 12
142.410(CC) 142.710(scc) 142.170 voice 141.975 voice
3, 4, 5, 7, 9, 23 neighbors
TG 20622, 20625, 20626, 20629
773747 dispatch on 20622
773742 dispatch on 20625
773746 dispatch on 20626

site 04
142.230(CC) 142.320(scc) 142.785 voice
3, 8, 12, 25, 33, 36, 44, 45 neighbors

site 18
142.905(CC) 142.665(scc) 142.185 voice
10,19,21,22, 27, 33, 45
 

EJB

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Downtown Hamilton
Just noticed talkgroup 20695 off the Brantford tower on Unitrunker. A few RIDS like 75055, 750058, 773725 joined and used it.

Maybe this will help someone because I still haven't figured out how and why these scanners I have can't get LMRN to work. Maybe they are one of the Cambridge CACC's?

Also noticed some Ministry of Finance TG activity on Brantford.

E
 
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