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Old 07-04-2018, 5:17 AM
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Default MobileTech NXDN Network

It looks like MobileTech is standing up a new NXDN network alongside their existing LTR-Net network. I'd assume this would be deployed across Western, Central and Northern areas.

I found what looks like an NXDN signal on 152.9825 which was their dedicated Fleetsync GPS data channel for the Manlius site.

https://www.radioreference.com/apps/...llsign=WPTU791

It looks like they added the NXDN 4K00F1W emission designator to their license back in February, 2018.

Denny
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Old 07-04-2018, 5:21 AM
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And there's another NXDN control channel on 153.125 at their Tully site:

https://www.radioreference.com/apps/...llsign=WPQB874
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Old 07-04-2018, 9:25 AM
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I am hearing a continuous digital signal on 153.125 but DSD+ does not recognize it.
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Old 07-04-2018, 9:29 AM
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Quote:
Originally Posted by k2hz View Post
I am hearing a continuous digital signal on 153.125 but DSD+ does not recognize it.
If it is NXDN48 / IDAS, you might get better results if you run DSD+ with the -fn switch -- and if you can, decrease your bandwidth to 4000 or so if you are using SDR# or FMP.

Mike
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Old 07-04-2018, 10:40 AM
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Quote:
Originally Posted by mtindor View Post
If it is NXDN48 / IDAS, you might get better results if you run DSD+ with the -fn switch -- and if you can, decrease your bandwidth to 4000 or so if you are using SDR# or FMP.

Mike
I am using discriminator tap audio and DSD+ works perfectly with existing settings on every other NXDN 48 or 96 system I have encountered. Something else is going on with this one. DSD+ simply ignores it.
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Old 07-04-2018, 2:10 PM
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Originally Posted by k2hz View Post
I am using discriminator tap audio and DSD+ works perfectly with existing settings on every other NXDN 48 or 96 system I have encountered. Something else is going on with this one. DSD+ simply ignores it.
Ok don't try -fn then. Just trying to help man. If it looks like a 48 sig, it could be NEXEDGE48 or IDAS. I have a much better time with IDAS if I force -fn.

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Old 07-05-2018, 7:32 AM
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I use both -fn and -fN in the command line when targeting NXDN-based systems.

Mobile Tech has two VHF sites in the capital area and I am trying to watch them for NXDN signals but my home reception is pretty poor for either location. I am in Rensselaer and Poestenkill is behind terrain in one direction, Vischer Ferry is behind terrain in another direction.
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Old 07-06-2018, 6:08 AM
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Both 152.9825 and 153.125 are down this morning and a new NXDN signal is active on 150.92, probably at the Tully site. Maybe they're still in a build-out/testing phase.

I wonder if they're adding NXDN to support their Finger Lakes Railroad customers at Salt City by the fairgrounds and their occasional trips to the west toward Rochester. The Finger Lakes locomotives would previously broadcast their GPS position every minute via Fleetsync on the LTR-Net channels.
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Old 07-06-2018, 8:51 AM
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Makes me wonder who they plan to support with the sites in the capital area.

OT: I wonder if Fleetsync over LTR is cheaper than ATCS.
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Old 07-12-2018, 8:06 AM
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Just arriving from this thread started a couple of months back:

https://forums.radioreference.com/on...stem-13-a.html

Sites for system (R)13 heard in Ottawa Ont. during enhanced propagation:

150.95000 R13-34
152.38250 R13-56
153.26000 R13-32


Dave
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Old 07-13-2018, 9:22 AM
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I heard another N48 CC early this morning but did not have a chance to decode, on 153.1025 .
It is probably part of this R13 system, as I could also hear 152.3825; both currently used by Mobiletech LTR-Net,
neither known to any systems up here (mostly in West Quebec).

Dave
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Old 07-15-2018, 7:06 AM
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Quote:
Originally Posted by DaveH View Post
Just arriving from this thread started a couple of months back:

https://forums.radioreference.com/on...stem-13-a.html

Sites for system (R)13 heard in Ottawa Ont. during enhanced propagation:

150.95000 R13-34
152.38250 R13-56
153.26000 R13-32


Dave
153.1025 belongs to site 32. Not sure if the NXDN site numbers align with the old site numbers.

Dave

Last edited by DaveH; 07-15-2018 at 7:17 AM..
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Old 07-15-2018, 12:56 PM
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https://www.radioreference.com/apps/db/?sid=10105

As it appears that the site numbers Dave is finding correspond directly with the LTR Net site numbers, I've created the system in the database.

Denny, can you please confirm that the Network ID and Site #'s for Manlius and Tully match the database?

These control channels should also be broadcasting their CH ID and RAN, so let's try to grab those as well. Neighbor lists if available also helpful. You guys know the drill by now.
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Old 07-16-2018, 10:41 AM
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I was not able to copy channel numbers, as the signals were sporadic and via tropo; just enough to give system/site numbers. I also suspect initially the neighbour site info is not transmitted when the site is first coming up; maybe they are not networked yet, sort of like Moto site-trunking mode? Will keep trying but at such a distance it's hit and miss. BTW these are coming in early hours of the morning, was up around 6:00-6:30 am on the weekend; signals usually fade out by 8-9am.

Dave
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Old 07-20-2018, 8:34 AM
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I went mobile to scope out the Mobile Tech / Pfeiffer Group sites licensed for Vischer Ferry and Poestenkill the other day. Apparently neither site is transmitting yet.
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