NJ Public Safety Interoperability Communications (PSIC) 700 MHz Network

[nosoup4u]

3445 is 55120 on the 800 side. That is a talk group they use for testing.

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[brey1234]

New Jersey “is in the process of implementing a new statewide Project 25 (P25)
digital trunked system in the 700 MHz frequency band,” which will “provide interoperable
communications between multiple jurisdictions and multiple Public Safety disciplines throughout the
state.”10 “To enhance interoperability between state and local public safety agencies, [New Jersey] plans
to implement a deployable temporary trunked repeater system.”11 However, New Jersey states that
“[i]nsufficient State assigned narrowband channels exist to support both the system’s fixed infrastructure
and the deployable system.”

http://hraunfoss.fcc.gov/edocs_publi...A-13-255A1.pdf

[Chauffeur6]

It's nice to finally see some full-time Phase II TDMA talkgroups active on the system.

[jblake76]

Good morning all,

I just entered the Camden county & the Nj state p25 systems into my 800 with the gre programming software. I have not heard any transmissions come across either. I put both a private and public wild card in the talk groups. Sine I let the software do the installation, I should not have to modify anything correct.?

[nosoup4u]

Can someone re-verify Site 132 in Bergen County? I am showing that site coming out of Easton, PA with the same frequencies.

Site 001-032
774.05625
774.30625 Alt
774.55625 Alt
774.80625 Control

[Chauffeur6]

Originally Posted by nosoup4u

Can someone re-verify Site 132 in Bergen County? I am showing that site coming out of Easton, PA with the same frequencies.

Site 001-032
774.05625
774.30625 Alt
774.55625 Alt
774.80625 Control

I'm seeing a ton of Somerset County activity on Site 132, as well as DOT Central talkgroups/units. It makes absolutely no sense that you would see any of that activity on a site in Bergen County.

This site is actually in Washington Twsp in Morris County. I've changed the location of Site 132, and updated the geolocations for several other sites.

[nosoup4u]

I thought that was the Easton site, I guess I will have to take a ride over that way and see if I pick up another control channel.

It makes sense that they have that site, hackettstown was a dead spot for the 700 system. I will have to see if that has improved over there.

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[Chauffeur6]

According to the official site map I have, there are no 700 sites location outside of the state. It is possible that has changed, so if you find anything definitive, it would good to know.

It's also important to note that there are 5 separate simulcast zones built into this system, in addition to the singular sites. The simulcast zones are the single-digit site numbers 1 through 5. I'm working on a map of the sites that should make it easy to visualize how the system is laid out, which I'll post once I'm done with it.

West Orange Simulcast - Site 001
Essex County Courthouse (Essex)
Garrett Mountain (Passaic)
Jersey City (Hudson)
Johnson Drive (Somerset)
Rikers Hill (Essex)
West Orange (Essex)

Hunterdon Simulcast - Site 002
Hunterdon (Hunterdon)
Kingwood (Hunterdon)
Montana Mountain (Warren)

Bordentown Simulcast - Site 003
Bordentown (Burlington)
Millstone (Monmouth)
Toms River (Ocean)
Warren Grove (Ocean)

Berlin Simulcast - Site 004
Berlin (Camden)
Bridgeton (Cumberland)
Camden City (Camden)
Woodstown (Salem)

Hammonton Simulcast - Site 005
Atlantic City (Atlantic)
Hammonton (Atlantic)
Woodbine (Cape May)

[PM08203]

Anyone know what TG 3349 is? If already answered sorry if I missed it.

[Chauffeur6]

Originally Posted by PM08203

Anyone know what TG 3349 is? If already answered sorry if I missed it.

3349 is in the database.

Criminal Investigation Bureau - Central Operations 4

New Jersey Public Safety Interoperability Communications (PSIC) Network Trunking System, Statewide, New Jersey - Scanner Frequencies

[nosoup4u]

3347 (C3-23 CIB 3) has been active recently. At what point should we just add all the NJSP talkgroups into the PSIC system?

[Chauffeur6]

Originally Posted by nosoup4u

3347 (C3-23 CIB 3) has been active recently. At what point should we just add all the NJSP talkgroups into the PSIC system?

As they become active and are verified. I know it's tempting to just dump them all over to the 700 MHz system and be done with it, but if for some reason there are any anomalies, it's a lot easier to figure them out before they are added to the database, rather than weeding through dozens of talkgroups.

[elias1988]

3345 appears to be another CIB talkgroup,same radios seen on
3349.

[Chauffeur6]

Here's a map of the sites I created today. It should help everyone visualize how the system is laid out, in particular how certain physical locations are part a single "site" simulcast zone, as opposed to other sites which are independent. This is important to note because it will explain why you can drive to several locations miles apart and wind up with the same Site ID and frequencies with a very strong signal.

NJ PSIC Site Map

Just note that I created this based off official documents from the state and Motorola, as well as some of the info from the database here. The possibility exists that some of the information is outdated or not entirely accurate, but from what I can tell it's a pretty good representation of the network.

[mdragon]

Originally Posted by Chauffeur6

based off official documents from the state and Motorola

Any information in there about why these 4 areas were chosen to operate this way? It seems like Union County is going to be its own site (perhaps part of another simulcast as well it will turn out?). But the Johnson Dr. site in Somerset County will be further from Essex than the Union County site(s).

Do people expect there to me more simulcast as the system evolves or are these 4 areas specific in their requirements or coverage needs?

[Chauffeur6]

Originally Posted by mdragon

Any information in there about why these 4 areas were chosen to operate this way? It seems like Union County is going to be its own site (perhaps part of another simulcast as well it will turn out?). But the Johnson Dr. site in Somerset County will be further from Essex than the Union County site(s).

Do people expect there to me more simulcast as the system evolves or are these 4 areas specific in their requirements or coverage needs?

There is less activity in the western and southern part of the state, so they can get away with using less frequencies in a simulcast pool to cover a larger geographical area. Up north, where there is heavier activity on the system, they need to make the most out of the available frequencies. Sometimes it's more efficient to assign 4 or 5 frequencies to a single site and let it operate independently (although some talkgroups may selectively be simulcast over multiple sites, that shouldn't be confused with a simulcast zone of sites), rather than trying to network multiple sites. You can also reuse frequencies in another part of the state more readily if you're only dealing with small footprint single site usage, as opposed to a wider area simulcast.

My guess is that the system's infrastructure and configuration is pretty stable at this point, I wouldn't expect to see many more changes to it.

I would like to figure out what's up with the sites that were shown in the Motorola documentation that we don't see in the database. Were those sites never built out, or has no one mapped them yet? Or were they made part of existing simulcasts?

Bearfort in Passaic County
Cranbury in Middlesex County
Wildwood in Cape May County

West Trenton and East Rutherford were not part of the Motorola documentation from 2011, so it's certainly possible there have been other changes not reflected on that map. I'm kind of hoping my creating that map will spur some interest from people to see what else might be out there.

[Highpockets]

Originally Posted by Chauffeur6

There is less activity in the western and southern part of the state, so they can get away with using less frequencies in a simulcast pool to cover a larger geographical area. Up north, where there is heavier activity on the system, they need to make the most out of the available frequencies. Sometimes it's more efficient to assign 4 or 5 frequencies to a single site and let it operate independently (although some talkgroups may selectively be simulcast over multiple sites, that shouldn't be confused with a simulcast zone of sites), rather than trying to network multiple sites. You can also reuse frequencies in another part of the state more readily if you're only dealing with small footprint single site usage, as opposed to a wider area simulcast.

My guess is that the system's infrastructure and configuration is pretty stable at this point, I wouldn't expect to see many more changes to it.

I would like to figure out what's up with the sites that were shown in the Motorola documentation that we don't see in the database. Were those sites never built out, or has no one mapped them yet? Or were they made part of existing simulcasts?

Bearfort in Passaic County
Cranbury in Middlesex County
Wildwood in Cape May County

West Trenton and East Rutherford were not part of the Motorola documentation from 2011, so it's certainly possible there have been other changes not reflected on that map. I'm kind of hoping my creating that map will spur some interest from people to see what else might be out there.

I for one would like to thank you for the time and effort your putting into the new system, this info will help all the users in NJ have an idea what we're dealing with when the system is completed and as more users start using it.

[Chauffeur6]

Aww Steve, don't make me blush!

[Highpockets]

Originally Posted by Chauffeur6

Aww Steve, don't make me blush!

Hey, keeping this site running and the info up tp date, ins't an easy job.

I could have called you a Bum, but I'm to tired to argue or fight.

[nosoup4u]

That is a fantastic Map. I have been meaning to setup the zones in GPS on my 996, you just made my life a lot easier.

We may want to add the remaining Statecom talkgroups to the database, I think it is safe to assume those are all active.