S Brunswick freqs after move to MSEX TRS

[mdsxfire]

Once south Brunswick makes the transition to the msex can’t trs can the county re license a Brunswick’s frequencies to add capacity to the county system, I know they would have to add 5 radios to each site but I would think they would be an easy acquisition of frequencies.

 

[rr60]

Probably easier to modify the SB license and add locations and emission designators of Middlesex TRS staying within the contours of the SB license parameters. Much less gymnastics.

 

[mdsxfire]

Probably easier to modify the SB license and add locations and emission designators of Middlesex TRS staying within the contours of the SB license parameters. Much less gymnastics.

So I kind of understood that, lol

 

[mdsxfire]

Probably easier to modify the SB license and add locations and emission designators of Middlesex TRS staying within the contours of the SB license parameters. Much less gymnastics.

Does that mean the county would just use south Brunswick’s sites?

 

[rr60]

It is a suggestion to simplify frequency coordination. By adding the Middlesex sites but having signal stay within boundaries of SB present license is the thought.

 

[robbinsj2]

...I would think they would be an easy acquisition of frequencies.

Decades ago when I was paying closer attention to South Brunswick's system, I know there were cochannel users in the north Jersey area -- West Orange and Port Authority from memory. If they're still holding those channels then it may be difficult to get authorization to use those channels in northern Middlesex County. If the other licensees have vacated their channels then perhaps building them out countywide would be feasible, else they'd probably be stuck pretty tight in to South Brunswick as r60 is suggesting.

 

[GTR8000]

The Middlesex County TDMA system has 15 traffic channels, which equates to 30 talkpaths. 30 simultaneous voice transmissions is generally near the upper limit for a single P25 site/simulcast cell, due to control channel signaling throughput limitations.

Even if the county were able to get those 5 frequencies licensed for every site in the county (unlikely), there's a lot more to it than simply adding another rack of repeaters at each subsite. The other option might be to create a second cell just for South Brunswick on the county system using their frequencies, although I'm not sure that the additional capacity is even needed?

Is the county really having capacity issues with a 30 talkpath cell?

 

[rr60]

Is the county really having capacity issues with a 30 talkpath cell?

And therein lies the real question. I suspect GTR is on target. I’m out.

 

[mdsxfire]

The Middlesex County TDMA system has 15 traffic channels, which equates to 30 talkpaths. 30 simultaneous voice transmissions is generally near the upper limit for a single P25 site/simulcast cell, due to control channel signaling throughput limitations.

Even if the county were able to get those 5 frequencies licensed for every site in the county (unlikely), there's a lot more to it than simply adding another rack of repeaters at each subsite. The other option might be to create a second cell just for South Brunswick on the county system using their frequencies, although I'm not sure that the additional capacity is even needed?

Is the county really having capacity issues with a 30 talkpath cell?

No I wasn’t suggesting they were having any capacity issues, and as a user i have not run into getting a busy tone, I was just wondering if that was something they would do with adding south brunswick and in the future Edison twp (which would be a lot of traffic between all their agencies) plus possibly Monroe switching and whatever other agencies might be looking to switch.
hypothetically if every town in Middlesex county were to move all operations to this system would the current setup still be able to handle it?

 

[edisonfire]

Has SB transitioned to Middlesex system off their own yet? To review the Middlesex County Database, it shows New Brunswick is operating as they always have with no mention of being on NJICS. Database shows numerous TG's for SB but the database shows SB operating on their own system. There seems to be a lag between forum and database. Database states South Plainfield is on Middlesex Trunked, but forum conversations have indicated they were unhappy and still operating conventionally.

 

[W2SJW]

I have a friend that operates as part of SB emergency services. The SB talkgroups in the DB came from his direct radio listing, and they will be what the township operates on after the full transition. I can't comment on any of the other issues stated.

 

[mdsxfire]

Has SB transitioned to Middlesex system off their own yet? To review the Middlesex County Database, it shows New Brunswick is operating as they always have with no mention of being on NJICS. Database shows numerous TG's for SB but the database shows SB operating on their own system. There seems to be a lag between forum and database. Database states South Plainfield is on Middlesex Trunked, but forum conversations have indicated they were unhappy and still operating conventionally.

South Plainfield PD/ems do operate on the county TRS, the FD cited coverage issues that should be fixed once the county adds 2 sites in Edison who i also rumored to be going to the system as long as the 2 sites are added for coverage. South Brunswick TGs have been in the DB for a while and the testing on the TG was ramping up even as of late last week, if they are allowed to keep working I would think they will transition by summer maybe.