GS Parkway Radio System

[N2DLX]

Rich - tnx for the update. I kinda figured that was the case last time I posted on what I was hearing while listening with some of my ham 220mhz gear. The audio is of course low listening to it this way and there is not much to listen to either or so it seems.

Yeah the voice level is very low system-wide which makes it hard to listen to against the much louder idle pulses. I didn't hear Parkway traffic on the Woodbridge site, it seemed like everything was either Turnpike Maintenance or Roads Dept. Not sure if Parkway is switched over yet or if the Woodbridge site only carries Turnpike talkgroups.

I still can't understand the reason why 217.625 MHz has a long buzzing transmission every so often when idle. It's not the Passport data being sent, and it only happens on .625. It sounds like .625 is the home repeater for the Turnpike talkgroups, and when the .625 repeater does this long buzzing transmission, the next voice call is forced onto an alternate channel. Makes me wonder if that buzzing is another radio keying up every so often, but I have no idea what it's trying to send. Certainly not a common ANI format like MDC1200, Fleetsync, GE Star, MODAT, DTMF.

I heard a rumor that most people are going to be getting their own portable radios as well, including those who never was issued a portable on the existing system.

 

[radiomanNJ1]

Hey, you don't like listening to people fixing roads or plowing snow?
Yes, there will be tremendous listening on the 220 system that they spent TAX dollars on to rent/lease.
Why, with the increased capacity they can even talk about 2 potholes at the same time or 2 disabled vehicles. Another waste of money. Tolls will have to go up.

 

[Highpockets]

Yeah the voice level is very low system-wide which makes it hard to listen to against the much louder idle pulses. I didn't hear Parkway traffic on the Woodbridge site, it seemed like everything was either Turnpike Maintenance or Roads Dept. Not sure if Parkway is switched over yet or if the Woodbridge site only carries Turnpike talkgroups.

I still can't understand the reason why 217.625 MHz has a long buzzing transmission every so often when idle. It's not the Passport data being sent, and it only happens on .625. It sounds like .625 is the home repeater for the Turnpike talkgroups, and when the .625 repeater does this long buzzing transmission, the next voice call is forced onto an alternate channel. Makes me wonder if that buzzing is another radio keying up every so often, but I have no idea what it's trying to send. Certainly not a common ANI format like MDC1200, Fleetsync, GE Star, MODAT, DTMF.

I heard a rumor that most people are going to be getting their own portable radios as well, including those who never was issued a portable on the existing system.

I wonder if that buzzing is GPS signals of some kind, the vehicles can be tracked from the comm center.

 

[jcardani]

Hi All,

I broke out my Passport monitor program and here are the site numbers and channel numbers for the systems I can receive from my location. FYI the data is inverted from normal Passport systems. Enjoy!

Garden State Parkway Barnegat Tower Site 73

Freq Chan

217.5625 250
217.6500 264
217.7875 286
217.8625 298

New Jersey Turnpike Chesterfield Site 80

Freq Chan

217.5875 254
217.6625 266
217.8125 290
217.8875 302

New Jersey Turnpike Mt. Laurel Site 81

Freq Chan

217.5375 246
217.6250 260
217.6875 270
217.8375 294

New Jersey Turnpike Deptford Site 83

Freq Chan

217.5500 248
217.6125 258
217.7500 280
217.8500 296

New Jersey Turnpike Deepwater Site 86

Freq Chan

217.6000 256
217.7000 272
217.8000 288
217.9000 304

 

[jcardani]

Attached pics of Passport monitor program:

gs passport
idle words on Mt. Laurel site freq 217.8375

gs passport2
call grants for data on chan 270 (217.6875) site 81 (Mt. Laurel) tg 65532

 

[JCC419]

Are they still using there 800 mhz frequency's or did they totally switch over to this new system ?

 

[jcardani]

Maint units appear to be on the 217 Mhz system plus data. It is not very busy.

I am not in range of the 800 parkway channels so I can't verify right now but I know the 453.875 turnpike channel is still in use. Not sure about the 159 mhz turnpike channel. Can anyone else assist?

 

[nosoup4u]

159.180 is pretty much done with at this point. I think they have kept it around as a backup or over flow channel.

 

[GM]

I've noticed that the GSP 800 MHz channels are not sounding the same as they used to. I'm thinking that they have switched over to the 217 MHz system, and have certain TG's patched onto the 800 one, by the sound of it for anyone units not switched over yet. That's been my observation; and yes, in reference to the 159.1800 NJTP freq., I haven't heard any traffic on it in a month or two.

 

[johnyvico]

hey joe

hey joe am i able to pick up this new turnipke/parkway system with my pro106

 

[jcardani]

If you live fairly close to either the turnpike or parkway you should be able to receive the system but there are no scanners that can track it. LTRunk software (see RR wiki) may be able to track it using a low pass filtered data slicer. But the software will need to be modified since the data is inverted from normal Passport systems and the idle words are a different value.

I wrote the software that was used to decode the information posted earler. I use the low pass filter in a connect systems LT-2 LTR decoder output to a PIC microcontroller that does the bit banging function. My software reads the data out of the PIC frames it and displays the data that you see in the attached files I posted earlier.

 

[jcardani]

This system is very active today!

Some additional information. I am primarily monitoring the Mt. Laurel site but the comms are being rebroadcast on the other sites I can receive such as Deptford and Chesterfied.

The Home channel for the Mt. Laurel site is 217.6875 with voice channels on 217.6875, 217.625, and 217.5375.
Registration channel is 217.8375

The primary southern division operations talkgroup is 59998.
The data talkgroup is 65532.

Weather information is being broadcast on the main talkgroup (59998) at the top of the hour.

Hi All,


New Jersey Turnpike Mt. Laurel Site 81

Freq Chan

217.5375 246
217.6250 260
217.6875 270
217.8375 294

 

[jcardani]

Additional talkgroups:

59998 - Southern Division Operations
59997 - Northern Division Operations
59985 - Unknown
60000 - Unknown
20232 - Unknown

 

[GM]

I've noticed that the GSP has the LTR system patched to the old Maintenance channel (858.0375 151.4) for the past few weeks now. Not sure which TG is patched; I'll take a guess that it's the main TG chosen. Not sure how many TG's are on the new system - but I'll try to get an idea from "my source" the next time I see them.

 

[mondaro]

hey joe am i able to pick up this new turnipke/parkway system with my pro106

John..

Are you you able to do that if the system can not be tracked by any scanner.

Tony M.

 

[mondaro]

This system is very active today!

Some additional information. I am primarily monitoring the Mt. Laurel site but the comms are being rebroadcast on the other sites I can receive such as Deptford and Chesterfied.

The Home channel for the Mt. Laurel site is 217.6875 with voice channels on 217.6875, 217.625, and 217.5375.
Registration channel is 217.8375

The primary southern division operations talkgroup is 59998.
The data talkgroup is 65532.

Weather information is being broadcast on the main talkgroup (59998) at the top of the hour.

Hi All,


New Jersey Turnpike Mt. Laurel Site 81

Freq Chan

217.5375 246
217.6250 260
217.6875 270
217.8375 294

Joe...

How are you able to track this system, What kind of set up do you have doing it.
I would love to hear them again up here in the newark area. If you have the time
send me a private message with the details how to do this.

Tony M.
Harrison, NJ

 

[jcardani]

Hi Tony,

Check the second paragraph in post 91 above. The program I reference there is windows based and displays activity on the system. I also posted screen shots earlier in this thread. The program I am using to track the Passport system is DOS based and also interfaces with the hardware I mention in post 91.

 

[GM]

GSP/NJTP 220 MHz System

Since I'm on a roll here, I was able to get the channel names (line-up) for the new TP radio system:

Ch.
1 TP Fleetwide
2 TP Amber
3 TP Maint. South
4 TP Maint. North
5 TP Districts South
6 TP Districts Central 1
7 TP Districts Central 2
8 TP Districts North
9 TP Building Maint. North
10 TP Building Maint. Central
11 TP Building Maint. South
12-14 Not programmed??
15 Car to Car 1
16 Car to Car

Hopefully, those with the "fancy toys" will be able to put TG #'s and names together. I'm one of those who don't have the nice toys, so the only help I can provide is the channel names (and frequencies as posted earlier). I will work on trying to get the GSP channel line-up down, or maybe those with "connections" to the GSP can get a list of their channels and post them so we can all work on this together. I do know that the NJTP uses the Car-to-Car channel, as they were in my neighborhood earlier and were using it for "traffic control" purposes. It was one of those times though that I did not have my radio with me, and now beat myself over the head for missing on the opportunity.

I also found out that the cut off for the "North system" is Exit 8 to the George Washington Bridge; from Exit 1-8 is the "South system" as it was explained to me for the NJ Turnpike.

Also, for an administrator: Is their a way we can get the NJTP/GSP trunked radio system listed in the database as a separate Statewide TRS? I'm not sure on some of the specifics, so maybe those who have knowledge of it can make a new database for them? Please feel free to use the freq. list I posted in the forums/threads on locations, etc.

 

[jcardani]

Great Job GM!

Now I can line up the active talkgroups with your channel list!

Joe

 

[jcardani]

Getting talkgroup 59949 on the parkway system, site 73 - Barnegat. Sounds like this is either the main talkgroup or south talkgroup since the mile markers heard are in the 80 to 113 or so range. The units id this channel as "Parkway". So far that's the only talkgroup heard on that system.