Jersey City Police

[dubenezic]

Originally Posted by K9one

I am the guy who posted the info on Jersey City when the switch was made.
The designers of the system built alot of extra talkgroups into the system some of which probably will never be used. I will look in my files and forward the complete list to the administrator of the site.
There are alot of talkgroups that are full time encryption such as Narco, Street crime, SIU, IAU, ESU so you wont hear much there.
The fire department is finally on the system but still have not given up their old frequencies even though the frequencies I believe according to the license are suppose to be part of the trunk system.
The department of public works have about a half a dozen talkgroups yet you only normally hear them on the main dpw talkgroup same thing for the Incinerator Authority they have a few talkgroups but you normally hear them on only one.
Parking authority has I believe two and they are heavily active on only one.
As I remember PD is in the 1000 range of talkgroups with parking and OEM, then FD is in the 2000 range of talkgroups, then Department of Public works is in the 3000 range of talkgroups and finally the Incinerator Authority is in the 4000 range of talkgroups.

On the Police side I only hear about 5 TG's. A-SOUTH, WEST, EAST and NORTH. The A-INVST TG is in the clear. I don't listen to the incinerator auth. or DPW. The FD is still using 2 frequencies on analog, 460.550 and 460.600. I only hear dispatches going over on digital. Also, the PAPD has access to the A-EAST TG. ESU, BCI and Detectives are called on one of the 4 TG's I mentioned above. If I can confirm any info I'll submit it, but I just moved to JC, so I haven't been listening for very long. I do have all of the PD and some FD talkgroups programmed just in case there is some activity. But so far only the TG's I mentioned. By the way, I have not noticed any TG's that we're encrypted. Usually I hear garble when it is. I did hear a surveillance in Greenville and that was in the clear.

Thanks for the reply.

[K9one]

There are numerous encryption channels. If you check the database it has been updated. All the Narco, SCU, ESU tac channels are totally encrypted.

[dubenezic]

Wouldn't the 396xt show the ENC icon in display mode 1? On conventional it does.

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[dubenezic]

I saw the changes in the DB. I am going to put my 396xt in id search mode and see if any of the tgid's pop up. I'll post here what I find.

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[dubenezic]

Is the encryption full time?

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[CqDx]

I've never heard comms in the clear on the Narco and SCU TGs K9one mentioned.

Is FD still simulcasting dispatch on 2XXX series talkgroup? I haven't heard that coming on either. Only the 4 PD dispatch talkgroups and other *yawn* DPW stuff.

[JCESU]

DG=Disorderly Group, SOW=Sent on Way, BIS=Back in Service, RP resuming patrol, CC=Chit Chat or Meet me @___ etc, sorry didn't see K9One-ESUSgt answered up....

[BIODTL1997]

Does anyone know if this is a Harris or Motorola system?

[W2SJW]

It's Motorola. The only Harris system in North Jersey I know for sure is Wayne Twp.

The thing that makes them stand-out to the average scanner user is Harris systems can use every frequency as the control, while Motorola is hard-limited to 4 frequencies max. When you see every frequency here in database colored red or blue, that's a safe tip-off it's Harris:

http://www.radioreference.com/apps/db/?sid=6921

or,

http://www.radioreference.com/apps/db/?sid=4518

[RadioDitch]

Originally Posted by W2SJW

It's Motorola. The only Harris system in North Jersey I know for sure is Wayne Twp.

And I hate to say it...we can hear Wayne on their Harris system better than Jersey City on their /\/\oto system. And I'm about 15mi closer to JC than Wayne.

[BIODTL1997]

sweet, thanks! That's great info to spot a Harris system

[902]

Fort Lee is also using a Harris system.

I'm currently living in an area that uses them. It's a solid system and seems (from an outsider-looking-in perspective) to be as reliable as the next manufacurers' systems.

[Chauffeur6]

Originally Posted by W2SJW

The thing that makes them stand-out to the average scanner user is Harris systems can use every frequency as the control, while Motorola is hard-limited to 4 frequencies max. When you see every frequency here in database colored red or blue, that's a safe tip-off it's Harris

You can also look at the WACN. Motorola uses BEE00 for just about every system, while Harris systems always have a unique WACN. There are exceptions, of course, but for the most part it holds true.

[K2DNR]

Originally Posted by RadioDitch

And I hate to say it...we can hear Wayne on their Harris system better than Jersey City on their /\/\oto system. And I'm about 15mi closer to JC than Wayne.

According to JC's FCC license they are only using 20 watts on their transmitters.

[902]

Originally Posted by K2DNR

According to JC's FCC license they are only using 20 watts on their transmitters.

The reason for this is because of the FB8 exclusivity they needed in order to implement their trunked system. They had to clear the other systems that were on several of the frequencies. Although they are using 20 W output, the real indicator that needs to be looked at is not the output, but the ERP and the directional pattern, if some sites are built out with directional antennas. In order to clear some incumbent stations, many trunked systems are heavily constrained in how much power they can radiate in certain directions.

Now, T-Band (when it was available) had a different set of rules and reuse criteria. Many of the T-Band systems had exclusivity within their area and were not constrained by antenna patterns. You'll see Jersey City uses a hybrid of some of their regular UHF channels and Part 22 T-Band channels (anything 470 - 470.3 and 476 - 476.3 MHz) that were not part of public safety. That batch of frequencies were used in pre-cellular IMTS telephone systems. Those were waivered and had a number of other close-in incumbents to protect. Wayne is on Part 90 T-Band channels and had different criteria to meet. In general the exclusivity of T-Band negates the need to license as an FB8, because if you have full loading, you are exclusive to the frequency within a given area (a trivial pursuit question).

Trunked systems have to be symmetrical. That is, if one channel at a site is stronger than the others, or if one channel has to be weaker, then there are going to be problems reported by the users and the system will be judged in the street as a failure (and will probably have serious safety concerns). So, even if a channel is clear, it has to pretty much meet the minimum criteria for that location.

So, this should not be about manufacturer A's system works better than manufacturer B's system. This is all about how you can shoehorn the things you need in the area they're needed with the resources you have available.

For history buffs, there was a T-Band IMTS system in the NJ - NYC area that was just built out in 1987 using Micor infrastructure, but was hit hard by cellular telephones and was eventually dismantled before 1990; the controller was at the Armstrong Tower in Alpine. Other sites paralleled the (now gone, but nifty in its time) Henry Bros. 929.8625 MHz private carrier voice paging system. The frequencies had gone fallow until the FCC granted the waiver allowing certain public safety entities like Westchester County, Fort Lee, and Jersey City to expand into the Part 22 band.

[K2DNR]

I believe that 2 of their sites have to use 15 degree down tilt antennas. I think it's the 2 near the water. They do have issues with their radios cutting out a lot.

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[K2DNR]

Does anyone who listens to JCPD know what "1 in 1 out to the MC" means? I know MC=Medical Center, just the first part i'm confused on.

Thanks again.

[e911god]

1 person in the ambulance, 1 minute out from the medical center.

[K2DNR]

Thank you.