Just heard MTA testing on TG48432, interop.
Metro North PD
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It's supposed to switch over from the VHF in November, but time will tell.
msingewald
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How would that work? They would just use the trunk system in CT and then switch back to VHF in NY?
N1SQB
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Good question! I was wondering the same thing myself!
Manny
Manny
RobKB1FJR
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Unless it is patched into the trunked system. I bet MTA police officers may have to communicate occasionally on the railroad VHF to the trains.
slapshot0017
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Well they will never get rid of their VHF link so my guess since I have been hearing them on the CT STPD they have some apx 7000's and supposedly Motorola is coming out with some firmware so that it can utilize NXDN too because they use the same vocoder.
PJH
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Doubt the NXDN. NXDN/IDAS is a protocol developed by ICOM/Kenwood - unless they are going to pay some really nice fee's to them, I seriously doubt it. NXDN was one of the major reasons why Moto pulled out of the locomotive market when AAR decided on NXDN vs P25 (along with order stipulations and some of that).
MotoTRBO was also rumored to be in the APX line but that was shelved. Good sources have it that it was actually tested but for "business reasons" it was dropped.
MotoTRBO was also rumored to be in the APX line but that was shelved. Good sources have it that it was actually tested but for "business reasons" it was dropped.
slapshot0017
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My source came from inside a Motorola training program. Just going off of what he told me. Its for the public safety application. NXDN is the digital format and its open source. Kenwood/Icom doesn't own anything other than their trunked protocols Nexedge/IDAS.
I heard the AAR back off of the NXDN idea. I was at GCT last saturday morning and the PD all had new fancy APX
slapshot0017
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Yes PD is on the CT State Police and they are testing it. Quite a few yards have implemented it already. They are just trying to figure out coverage issues.
PJH
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Which yards?
MTA PD has had access to the CSP system for quite awhile. These is no actual coverage testing per se as the RF coverage maps have been stable for quite awhile. The I95 corridor in CT has really good coverage, and you can access the system via portable from Queens (though not the greatest based on previous testing).
MTA PD has had access to the CSP system for quite awhile. These is no actual coverage testing per se as the RF coverage maps have been stable for quite awhile. The I95 corridor in CT has really good coverage, and you can access the system via portable from Queens (though not the greatest based on previous testing).
slapshot0017
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Not talking about MTA if anything they will be late to the party cause they have Harris's for mobiles and ht1250's for portables... NJT is replacing all of their radios Amtrak is giving all their new employees icoms. CSX and NS have mostly all Kenwood mobiles and portables. Like I said its all in the testing phase. Most of the railroads out west are testing in their yards. East is mainly techs. They'd be better off staying analog for coverage but the feds are worried about voice quality and once a mandate is forced its gonna be just like the narrowband BS...
MTA PD is utilizing the CSP system totally as far as I can hear. Ny they are still using vhf that's why they have the APX's... They also need it to communicate with the train crews as I have hear also.
MTA PD is utilizing the CSP system totally as far as I can hear. Ny they are still using vhf that's why they have the APX's... They also need it to communicate with the train crews as I have hear also.
PJH
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This thread is about mta pd so our jumping around here mixing things up.
Railroads are not jumping on the nxdn bandwagon in mass. Yes they are buying nxdn compatible radios for the future but it's not as widespread as you think and it is not a mandate.
I only know of a couple of yards that are using it, and it's been restricted to crafts such as Carmen, mechanical and the like. Mainline operation is years off due to infrastructure and other considerations.
I've seen plenty of NS and CSX units still sporting Astro spectra radios. Up has gone the JEM radio route and not all are nxdn enabled. BNSF seems to have a mix of ritron JEM and GE's and not all are nxdn.
Railroads are not jumping on the nxdn bandwagon in mass. Yes they are buying nxdn compatible radios for the future but it's not as widespread as you think and it is not a mandate.
I only know of a couple of yards that are using it, and it's been restricted to crafts such as Carmen, mechanical and the like. Mainline operation is years off due to infrastructure and other considerations.
I've seen plenty of NS and CSX units still sporting Astro spectra radios. Up has gone the JEM radio route and not all are nxdn enabled. BNSF seems to have a mix of ritron JEM and GE's and not all are nxdn.
slapshot0017
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Well that's dumb... Guess my sources are way off... Ive heard um talking to the train crews though... No way they're varying around to radios and the officer wasn't in his car...
I know they're not all jumping on the bandwagon and I didn't say there was going to be a mandate. I'm just going off how I was informed on the subject.
PJH
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The bulk of the work is law enforcement/security. Train had a problem they call the train dispatcher who notified the pd dispatcher who calls the cops. They still have radios on VHF but they are a law enforcement agency and works with and needs to talk to other cops more than trains. That is why they have cop stuff I'm cop radios - nypd, nyc doit, and neighboring cities and towns on the UHF-t range.
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