Searching For New/Unknown NYCICN/ DOITT Talkgroups

[GTR8000]

@GTR8000 decided to program this up. Decided to look at CC strength on the (3) sites.

Site 30 clearly the winner, Site 60 CC just above noise floor for me.

I did however notice an oddity on CC for 31. I see two spikes. Site 30 is in this picture (on right) looks normal. “Not a peep on 31”. Ideas?

I think you've got the UHF sites backwards. Site 31's control channel is 483.39375, which means it would be the lone spike on the right of your screenshot. Site 30's control channel is 483.24375, making it one of the two adjacent channel spikes on the left.

With that being the case, that means that the double spike adjacent channels are 483.23125 and 483.24375, both of which are Site 30 frequencies. You probably caught 483.23125 being used for data, so it might appear like it's a control channel, but it's not.

Did you actually decode anything, or were you simply looking at the RF spectrum?

 

[rr60]

@GTR8000 had to get my note pad. Yes you are correct (thanks) Site 30 is the two spikes. Decoding 30 well. Will be taking a look at Site 31 this afternoon to see what if anything I get.

I guess FDNY FG Simplex relays are longer in the clear as it was on old DARS?

 

[62Truck]

@GTR8000

I guess FDNY FG Simplex relays are longer in the clear as it was on old DARS?

Nope, unforchunetly the FG simplex relays are now encrypted on the new system.

 

[GTR8000]

All FDNY/EMS talkgroups are strapped secure on the ASTRO 25 system, as has been discussed numerous times in this thread and others.

 

[rr60]

@GTR8000 had to get my note pad. Yes you are correct (thanks) Site 30 is the two spikes. Decoding 30 well. Will be taking a look at Site 31 this afternoon.

Site 31 shows signal on two sources, however UT shows terrible waveform. For me 31 is also a no go. Site 31 does show as neighbor to 30.

Caught new TG’s testing on 30 w Motorola. TG14000 RID 3921 TG14002 RID 128048 Going to let UT run a bit.

 

[n2nov]

TG14002 RID 128048

I believe that RID would be 1280481 which is from the DOITT Radio Shop also heard on TG 565 and 1050 recently.

 

[rr60]

Hey there Charles. Shutting UT down for the day. RID 1280481 and 1280482 only on 14000 and 14002 today. I noted these are the last two system TG’s before station ID.

Also noted TG 12733 w a fair number of hits w only one RID 118783. This RID not seen on any other TG today. Note this only one TG from the Marine TG’s block.

Nice website. Been using it for more than my sometimes fuzzy memory can recall😂.

Will miss DARS FG relay, nothing stays the same except…..

 

[n2nov]

Also noted TG 12733 w a fair number of hits w only one RID 118783. This RID not seen on any other TG today. Note this only one TG from the Marine TG’s block.

I have also heard the following RIDs on TG 12733:
1178999
1187730

 

[itzik]

The current amount of conversations on the new 800Mhz and 483Mhz P25 System encrypted groups does not match the amount of radio traffic that was in the past on 6B and TAC-1 from the scene over the div. repeaters.

So I guess what you see encrypted is EMS TAC groups, but not FDNY 6A,6B,6C,6D etc.

The question is: where are the FD TG currently? Are they in another system?

 

[Tank67]

The current amount of conversations on the new 800Mhz and 483Mhz P25 System encrypted groups does not match the amount of radio traffic that was in the past on 6B and TAC-1 from the scene over the div. repeaters.

So I guess what you see encrypted is EMS TAC groups, but not FDNY 6A,6B,6C,6D etc.

The question is: where are the FD TG currently? Are they in another system?

They are in this system, but no one has found them & officially submitted them to the database

 

[paul612]

They are in this system, but no one has found them & officially submitted them to the database

Has anyone tried the conversion formula? take the analog talkgroup and divide it by 16? I know that's worked to id new P25 talkgroups on other systems.

 

[CqDx]

It worked for some of the early talkgroups, but the recent additions (4 digit and 5 digit ones) do not follow this convention and cannot be converted by the "divide by 16" method.

 

[weathermedic]

Heard FDNY Marine units on 12768 this morning. One unit was transmitting in the clear, the other marine unit he was talking to was replying via encryption. Don't know if the unit transmitting in the clear did not have the radio switched to "Encryption mode" or if that is even an option, or what the deal was.

 

[GTR8000]

12768 is the new Fire Ops talkgroup, replacing the legacy 6B FD Ops talkgroup.

6A FD Admin legacy talkgroup is replaced by the new Fire Admin talkgroup, TGID unknown

6C FD Communications 1 legacy talkgroup is replaced by the new PSAC A talkgroup, TGID unknown (there may also be a PSAC B talkgroup to replace the legacy 6D FD Communications 2 talkgroup)

There are also new Marine Ops and HazMat Ops talkgroups, TGIDs unknown.

 

[GTR8000]

Friendly reminded that talkgroups must be identified before being included in the database. Please refrain from submitting talkgroups with vague descriptions. Unidentified or unconfirmed talkgroups can be added to the system's wiki page by any member of RR.

Also, when submitting to a system that has mixed FDMA and TDMA talkgroups, remember to note which mode you observed the talkgroup operating in. If you have observed both modes, note that also. Dual mode talkgroups are added as TDMA capable to ensure that their highest level of capability is documented.

Thanks.

 

[minasha]

I am trying to use a Pro-651 to monitor the NYCICN system.
I am on a wildcard multi site is set to stationary and all CC's are programmed.
I am not hearing a peep???
Are all TG's in phase II ?

 

[GTR8000]

Yes, that's why they are all showing mode T in the database.

 

[minasha]

Yes, that's why they are all showing mode T in the database.

Thank you

 

[Tank67]

12948 sounds like it’s the EMS hospital notification channel. It’s coming in encrypted from the dispatcher but clear from the ambulance.

 

[GTR8000]

12948 sounds like it’s the EMS hospital notification channel. It’s coming in encrypted from the dispatcher but clear from the ambulance.

It's already in the database.