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Posted:  Wed Mar 23 2016, 06:39pm | |
| Posted by: Darkstar350 | Posts: 811
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| Location: Central Nassau
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| Joined: Mon Aug 18 2014, 10:57pm
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I actually did try that freq with DSD a few months ago - i was picking up Trbo not Nexedge but whatever it was i dont think it sounded like MTA comms
I still get Trbo on it so i will watch it closer...
Like i said i dont think it was anything to do with the railroad but what i am not sure of is if 4K00F1E is specifically the Nexedge emission or could it apply to DMR in general...
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| Posted: Thu Mar 24 2016, 03:28pm | |
| Posted by: Darkstar350 | Posts: 811
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| Location: Central Nassau
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| Joined: Mon Aug 18 2014, 10:57pm
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So this morning i got group 1681001 with a CC of 7 on 452.8625
Its definitely distant/low powered - i get about 2 or 3 bars and thats with a outdoor antenna but it sounded like some type of building maintenance possibly?...
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| Posted: Thu Mar 24 2016, 03:38pm | |
| Posted by: Dave3825us | Posts: 1219
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Old Display Name: Dave
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 Premium Member | Joined: Fri Mar 24 2006, 10:47pm
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I am not sure when they changed there emissions so I cant really say I doubt it, but could it be the Lirr building/station maintenance guys? Can you grab some audio from dsd and post it ?
I am also surprised that there are not any posts on rr.com about the nexedge on lirr...
And Phil, if your here, the first line says UHf freqs, but there are Vhf freqs posted. And there are a few out of town rail roads listed in the first post..
[ Edited Thu Mar 24 2016, 03:40pm ] |
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| Posted: Thu Mar 24 2016, 10:11pm | |
| Posted by: Darkstar350 | Posts: 811
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| Location: Central Nassau
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| Joined: Mon Aug 18 2014, 10:57pm
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Anything is possible i guess but while the frequency in question sounds distant or low powered it does seem like it is a repeater and the MTA is only licensed for mobile use on that freq.
And what i heard a little later on in the day even sounded like some type of power plant comms - same color code and group but this time i hear references being made to a boiler room and something about "we cant turn the steam on tonite because they are working on the pumps"...
Maybe we can track this down
Dave how many bar strength were you getting around 106/107? Were you on a portable?
[ Edited Thu Mar 24 2016, 10:15pm ] |
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| Posted: Fri Mar 25 2016, 01:48am | |
| Posted by: Dave3825us | Posts: 1219
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Old Display Name: Dave
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| Premium Member | Joined: Fri Mar 24 2006, 10:47pm
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| I was mobile and it sounded like maybe 50 percent. I will be over that way in the next week or 2. I will bring laptop this time lol.... |
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| Posted: Tue Jan 15 2019, 04:48pm | |
| Posted by: Dave3825us | Posts: 1219
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Old Display Name: Dave
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| Premium Member | Joined: Fri Mar 24 2006, 10:47pm
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Anyone hear anything about Lirr and nxdn? I ran across this.
[link]
and
[link]
Have not read all of it yet but see something about narrowbanding. No mention of nxdn
Long Island Rail Road
Project: L70501SF
Description: Improve Radio Coverage Initiatives / FCC Mandate
Category: Communications And Signals
Element: Communications And Signals
xxxxxxxxxx
...
This Federal Communications Commission (FCC) Compliance project will continue system migration to a narrow-band radio frequency by upgrading and replacing radios, radio equipment and infrastructure to be compatible with the narrow band frequency.
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| Posted: Tue Jan 15 2019, 05:49pm | |
| Posted by: Darkstar350 | Posts: 811
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| Location: Central Nassau
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| Joined: Mon Aug 18 2014, 10:57pm
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Yes the main concern is for narrowbanding however most MTA freqs do have the NXDN emission on their licenses
They will be focusing on going for positive train control mostly as well
I could have sworn i heard NXDN on a couple of the MTA mobile freqs but i dont have anything logged and it would most likely be low power simplex if they are using it in any capacity
I still get DMR on some of the MTA 452mhz freqs but still not sure if they are MTA related or not...
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