While mobile I heard what appeared to by a NYSP unit on talkgroup 5011 calling Farmingdale, yes I am aware there is such a talkgroup on MRRS, but my scanner appeared to only be monitoring both Suffolk County system, only heard it once and could not get a look to see which system it appeared on. Anyone ever come accross this? Anyone aware of any link between the systems that might allow this?
MRRS/Suffolk County Link?
- Thread starter warren
- Start date
No link. Down here on Long Island Troop L uses vhf, Suffolk County and MRRS systems. Might have something on Nassau also but unknown at this time.
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They also have East Hampton's system.
Yes. Nyspd have tg’s on MRRS, East Hampton, Suffolk and maybe Nassau. They are all independent.
Presume you are referring to the 800 smartzone and the P25 when you say both Suffolk systems. Tg 5011 is only on MRRS and that's what your hearing. That tg is not on either Suffolk system.
I'm not entirely certain this statement is *entirely* true. Last time I monitored operations, I was monitoring a Troop L unit who came up on the Suffolk P25 system on TG231 and this was simultaneously outputting on the East Hampton system on TG2205.
Perhaps I caught a rare moment when these two were connected, but I can assure you the unit transmitting was not in East Hampton.
A little context here...
When P25 systems are connected to each other via an ISSI link, there are a few ways that they can share resources and/or facilitate roaming.
If you are hearing the same transmissions on otherwise separate systems, there's a very good chance that there's an ISSI link between them.
When P25 systems are connected to each other via an ISSI link, there are a few ways that they can share resources and/or facilitate roaming.
- RF resources can be shared, whereby subscribers are allowed to roam their "home" talkgroups onto a foreign system's infrastructure. This allows a smaller system such as East Hampton to cover a larger area by utilizing the county's subsites/frequencies, for example.
- Wide area talkgroups such as the NYSP can be permitted to roam between systems seamlessly. The TGID might be the same on each connected system, or different, it all depends on how everything is setup.
- Console patches, either temporary or permanent, can also be created between connected systems. These patches may utilize a block of TGIDs set aside specifically for that function (often in the 65xxx range), or they may reuse the existing TGIDs from each system. There are a few ways this can be done, so it's not always cut and dry.
- The term "patch" tends to be misused as a blanket term to mean any link between resources, but there are other ways of linking resources, such as mapping talkgroups between home and foreign systems that are connected via ISSI. Those links are all but transparent to end users and trunk tracking software, will not appear as patches, and will use static TGIDs predetermined on all involved systems.
- ISSI links don't always show up as adjacent sites; having the systems/sites announce each other as peers is purely optional and doesn't negatively impact the functionality of the ISSI link if not enabled. It simply makes it somewhat easier for subscribers to find adjacent sites if they aren't explicitly programmed into the codeplug.
If you are hearing the same transmissions on otherwise separate systems, there's a very good chance that there's an ISSI link between them.
I personally am quite aware of how ISSI between P25 systems work.
East Hampton, Suffolk and Nassau all have an active ISSI between each other (well not EH and Nassau but you get my point). My post specifically didn’t point out ISSI, but this is precisely what I’m saying, they maybe independent systems but they are configured at the core level for wide area roaming with some groups setup to be active between systems all the time.
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So, the OP stated,
Tg 5011 is only on MRRS. Any time tg 5011 is active on MRRS, I have not seen 231 or 20231 active on Suffolk P25 or 3696 on Smartzone at the same time. I am not in range of East Hampton.
In the past, on 5011, when units called in, it was their unit number, followed by Farmingdale on Metro. Listening to saved calls on 5011, I do not hear Metro referenced in the last few days.
So that tg, 2205, that's listed as EHPD to NYSP. So if your hearing State pd that are on tg 231 on Suffolk (who call Farmingdale) at the same time on 2205, then it might be safe to say the listing is incorrect and not EHPD and NYS PD, rather a patch of 231 from Suffolk.
2205 is also the only 4 digit tg on the EH system.
I am trying to obtain some radio id data from EH system.
I could be useful if someone in range of EH and MRRS could run both in Unitrunker and have a look what happens on EH when 5011 is active on MRRS.
Tg 5011 is only on MRRS. Any time tg 5011 is active on MRRS, I have not seen 231 or 20231 active on Suffolk P25 or 3696 on Smartzone at the same time. I am not in range of East Hampton.
In the past, on 5011, when units called in, it was their unit number, followed by Farmingdale on Metro. Listening to saved calls on 5011, I do not hear Metro referenced in the last few days.
So that tg, 2205, that's listed as EHPD to NYSP. So if your hearing State pd that are on tg 231 on Suffolk (who call Farmingdale) at the same time on 2205, then it might be safe to say the listing is incorrect and not EHPD and NYS PD, rather a patch of 231 from Suffolk.
2205 is also the only 4 digit tg on the EH system.
I am trying to obtain some radio id data from EH system.
I could be useful if someone in range of EH and MRRS could run both in Unitrunker and have a look what happens on EH when 5011 is active on MRRS.
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NYSP does have a link back to their bases on both the Suffolk System and the Easthampton system. But there's not much traffic. Mostly units calling Farmingdale.
As previously mentioned,
On 5011, units calling in would call, "x L xx, Farmingdale, on Metro".
On 231, units calling in would call "x L xx, Farmingdale on 800".
On either, there really is nothing interesting. Units call in to start tour, and call in to end tour. Vhf has all the fender benders and reckless drivers.
I can also say I have never seen tg's 231 (Suffolk P25) active at the same time as 5011 on MRRS. Have seen 231 and 3696 (Smartzone) active at the same time for obvious reasons.
So to the original question of a MRRS/Suffolk Link, there is no link in place at this time.
On 5011, units calling in would call, "x L xx, Farmingdale, on Metro".
On 231, units calling in would call "x L xx, Farmingdale on 800".
On either, there really is nothing interesting. Units call in to start tour, and call in to end tour. Vhf has all the fender benders and reckless drivers.
I can also say I have never seen tg's 231 (Suffolk P25) active at the same time as 5011 on MRRS. Have seen 231 and 3696 (Smartzone) active at the same time for obvious reasons.
So to the original question of a MRRS/Suffolk Link, there is no link in place at this time.
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