Trinity EMS Company operations

Discussion forum for scanning Eastern Massachusetts, including Norfolk, Suffolk, Middlesex, and Essex counties, as well as the greater Boston metropolitan area.
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MetroScanMA
Posts: 71
Joined: 03 Sep 2005 02:01
Location: Lowell, MA

Trinity EMS Company operations

#1 Post by MetroScanMA » 15 May 2017 09:25

I posted about this a long time ago but was hoping someone might have new information to share. Where did Trinity EMS move their company ops to? I know they are using 155.160 (DCS 125) and 453.6125 (CTCSS 77.0) for 911 contract operations in Lowell/Chelmsford/Dracut but I can't seem to find where they moved from since they used the LTR system in Lowell LCN 1: 452.2125 and LCN:5 453.6125 I used to hear things like routine transfers and the Chair cars. Any ideas anyone?
Raymond J Bryant

n1zyy
Posts: 26
Joined: 29 May 2017 20:56
Location: Lowell, MA

#2 Post by n1zyy » 29 May 2017 21:37

Hello, fellow Lowellian!

I've actually been wondering the same thing. I'm not necessarily interested in listening to chair car operations, but while poking through the old LTR information (which is definitely dead but still listed a bunch of places), I got to wondering where those operations moved. Call it the thrill of the hunt. ;)

FCC ULS seems to be down, so I can't look it up now, but the same license that has 453.6125 has a similar UHF repeater licensed. I've had it in my scanner for a little bit and am yet to hear anything. I believe it's 453.5625. Both of these frequencies are repeaters with 5 Watts output, which is kind of nutty.

I also heard what I'm almost positive is the Trinity dispatcher come up on
453.2875 a while back while I was tuning the band. I see this referenced here as being an LGH frequency used for ALS dispatch. Not sure how it differs from other other SMC dispatch frequency.

My notes from tuning around also have 452.7625 with the note "Think this is Trinity UHF," and that it was a very strong signal. That's definitely not Trinity's UHF channel. My notes are probably wrong, but it might be worth confirming.

Looking at related threads, I can confirm that they carry Kenwood HTs, so the NXDN theory isn't entirely far-fetched. I don't have the ability to monitor that.

In any case, they definitely have the most confusing radio setup I've seen in some time...
Matt
Lowell, MA

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schwab
Posts: 523
Joined: 13 Apr 2010 11:16
Location: Rollinsford, NH

#3 Post by schwab » 29 May 2017 22:34

Looking at this thread: http://www.scan-ne.net/forums/showthrea ... post131430
maybe try 472.8875?
Jacob
KB1VLA

n1zyy
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Joined: 29 May 2017 20:56
Location: Lowell, MA

#4 Post by n1zyy » 31 May 2017 13:00

schwab wrote:Looking at this thread: http://www.scan-ne.net/forums/showthrea ... post131430
maybe try 472.8875?
Thanks for recommending that. I parked a radio there for a couple hours and didn't hear anything, though.

I also set up a 'Discovery' run on 450-454 MHz on my new BCD536HP. I'm hearing what I'm almost certain is Trinity dispatch in several places. I suspect something may be wrong with my scanner, because it seems unlikely they'd be doing this. However, I'm not seeing multiple copies of signals for anything else; only Trinity. Curious if anyone else is seeing any of these signals or if they're mirages of the actual 453.6125 dispatch?

* 452.7625, PL 77.0. 3 hits overnight. EMS dispatches to Lowell and Billerica
* 451.4625, 77.0, 2 hits, "100, on arrival" heard, sounded like the same dispatcher in others
* 451.5125, 14 hits, 77.0; EMS dispatches to Lowell and Dracut
* 452.5125, 77.0, 21 hits; EMS toneout/dispatches

I also got 44 hits on the actual 453.6125 frequency, though curiously no audio was recorded for it. It seems likely that this may be my scanner being flaky, but I haven't seen this behavior with other frequencies, and the 453.6125 signal is not that strong, so I'd be surprised if it were overloading anything. Going to put 451.5125 in another radio and see if it hears anything today.
Matt
Lowell, MA

n1zyy
Posts: 26
Joined: 29 May 2017 20:56
Location: Lowell, MA

#5 Post by n1zyy » 31 May 2017 13:36

n1zyy wrote:Curious if anyone else is seeing any of these signals or if they're mirages of the actual 453.6125 dispatch?

* 452.7625, PL 77.0. 3 hits overnight. EMS dispatches to Lowell and Billerica
* 451.4625, 77.0, 2 hits, "100, on arrival" heard, sounded like the same dispatcher in others
* 451.5125, 14 hits, 77.0; EMS dispatches to Lowell and Dracut
* 452.5125, 77.0, 21 hits; EMS toneout/dispatches
OK, I am not hearing those on another radio. I think my new scanner might be a little too sensitive...
Matt
Lowell, MA

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garys
Posts: 3076
Joined: 29 Aug 2005 13:07

Re: Trinity EMS Company operations

#6 Post by garys » 07 Mar 2018 16:12

Resurrecting this a bit, Trinity has licenses for 453.56250000 and 453.61250000 under WQIQ345. 453.6125 is listed in the Wiki as "Lowell UHF" with a PL 0f 77.00.

They have licenses for four watt radios on 451.4875, 451.5125, 451.6125, 451.7125, 451.7375, as well as corresponding frequencies 5 Mhz up. License WQMJ947.

Which makes me think that those are some sort of mobile extender. Which would explain why one scanner might pick them up and another wouldn't.

You might want to concentrate on the first two frequencies.

LPD7
Posts: 760
Joined: 26 Sep 2005 14:53
Location: Northeastern MA

Re: Trinity EMS Company operations

#7 Post by LPD7 » 22 Mar 2018 17:21

Over the years, Trinity had been sub-contracting their radio services to various vendors. Hence the switch to different LTR systems after a few years. Lately, they have fallen off of my radar, but I would not be surprised to see them on a local, private LTR trunk. I do know they are NOT using any digital (yet). They usually leave a stand alone frequency in an effort to keep the Lowell General Paramedics in the loop. LGH Medics are used for Lowell, Dracut, and most Chelmsford calls; however, Trinity will try and cover most of the Chelmsford ALS calls with their own medics.

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