NYS DOT UHf Long Island

[dave3825]

I plugged these in before last storm and caught plow ops on 453.4375 referencing Robert Moses Causeway, Sunken Meadow, 454 and 106/107 during the storm. They are listed these Suffolk licenses.

KB41602
KLG421
WNFG794

453.0625
453.3375
453.4375 82.5 I believe
453.6125
453.7625

458.0625
458.1375
458.3375
458.4375
458.6125
458.7625

Anyone else have these programmed and if so have you heard anything?

 

[BFD319]

I hear them every night on the Low Band in nassau working on LIE ill put the uhf in see what comes up didnt no they had uhf

 

[dave3825]

ill put the uhf in see what comes up

Thanks...

Leave out the pl in case it's different out there. I only saw UHf (for Long Island) on the Suffolk licenses. Took a quick look to see if there were any other licenses under a different a FRN but nothing jumped out for Nassau County. If your near the border they have a yard close to the Nass Suff line on I-495 WB Service Road @ Walt Whitman Rd.

 

[Don57]

I plugged these in before last storm and caught plow ops on 453.4375 referencing Robert Moses Causeway, Sunken Meadow, 454 and 106/107 during the storm. They are listed these Suffolk licenses.

KB41602
KLG421
WNFG794

453.0625
453.3375
453.4375 82.5 I believe
453.6125
453.7625

458.0625
458.1375
458.3375
458.4375
458.6125
458.7625

Anyone else have these programmed and if so have you heard anything?

I retired from NYSDOT in 2010 , I worked out of Residency 06 aka Nassau South. We had 4 yards , Meadowbrook Rd in N.Merrick , Sunrise Hwy in Freeport , SSP in Valley Stream and RM Causeway in West Islip. We used 47.060 & 47.280. After I retired I listened to them for a few years but haven’t heard anything on these frequencies in years. I’m gonna check out the frequencies you listed. Do you hear much any other times ?

 

[Alarms50]

More than likely you are listening to a Low Band to UHF cross band link. In the licenses noted above the UHF frequencies are listed as FX1 (Control Station) and FX2 (Fixed Relay), the UHF channels are not licensed for Mobile units.

We have a cross band link in Westchester County. It is a link between the NYSDOT Yard and the transmitter tower. Both ends have Yagi directional antennas, so it is monitorable only in the local area.

 

[k2hz]

More than likely you are listening to a Low Band to UHF cross band link. In the licenses noted above the UHF frequencies are listed as FX1 (Control Station) and FX2 (Fixed Relay), the UHF channels are not licensed for Mobile units.

We have a cross band link in Westchester County. It is a link between the NYSDOT Yard and the transmitter tower. Both ends have Yagi directional antennas, so it is monitorable only in the local area.

I see that WNFG794 license is over 20 years old. Many years ago the NYDOT got the idea of replacing their remote transmitter site leased lines with UHF links. Equipment was purchased but much of it was never installed at least in my area.

One particularly ridiculous case I was aware of was the tower was in the maintenance yard right behind the Residency dispatch office and there was an exiting on site wire line control (not a telco leased circuit so not recurring cost) to the tower. So the UHF link equipment was purchased but never installed.

It was about in the same era NYSDOT got the ridiculous idea of eliminating skip interference by by offsetting their Low Band frequencies by 10kHz to "new" frequencies between the exiting 20kHz channels. With 20kHz wide signals, this would have traded single co-channel interference for interference from 2 adjacent channels with signals still well within the RX bandwidth. I believe the FCC actually granted some licenses, over the strong objections of the frequency coordinators and other states, but eventually cooler heads prevailed and it was never implemented AFAIK.

 

[Joshuascanner2021]

I see that WNFG794 license is over 20 years old. Many years ago the NYDOT got the idea of replacing their remote transmitter site leased lines with UHF links. Equipment was purchased but much of it was never installed at least in my area.

One particularly ridiculous case I was aware of was the tower was in the maintenance yard right behind the Residency dispatch office and there was an exiting on site wire line control (not a telco leased circuit so not recurring cost) to the tower. So the UHF link equipment was purchased but never installed.

It was about in the same era NYSDOT got the ridiculous idea of eliminating skip interference by by offsetting their Low Band frequencies by 10kHz to "new" frequencies between the exiting 20kHz channels. With 20kHz wide signals, this would have traded single co-channel interference for interference from 2 adjacent channels with signals still well within the RX bandwidth. I believe the FCC actually granted some licenses, over the strong objections of the frequency coordinators and other states, but eventually cooler heads prevailed and it was never implemented AFAIK.

It wouldn't surprise me if NYDOT eventually abandons the Low VHF as well, pretty much anything public safety related (which I would include a state DOT to be included in that) has now gone to either Hi-VHF or UHF (if they stayed analog). From what I have read there is only one? manufacture left still making low band vhf radios but that's only because of California (CHP) is still using Low VHF for primary operations still to this day. I am not sure if I read that on here or elsewhere.

 

[dave3825]

I’m gonna check out the frequencies you listed. Do you hear much any other times ?

I have most of my stuff set up at the moment to record other things. Getting something set up to exclusivly scan those.

More than likely you are listening to a Low Band to UHF cross band link.

I was monitoring both at the time and was not seeing signs of that. Possible since I am using an 800mhz antenna on this pc that I was not catching the low side.

the UHF channels are not licensed for Mobile units.

On KB41602 ( which is only uhf ) the only class listed is MO. On the other 2 licenses, FX1, FX2

 

[dave3825]

With the snow, ice and rain tonight into tomorrow, dot freqs should be active for anyone looking to see if they receive uhf...

 

[ecps92]

I have most of my stuff set up at the moment to record other things. Getting something set up to exclusivly scan those.



I was monitoring both at the time and was not seeing signs of that. Possible since I am using an 800mhz antenna on this pc that I was not catching the low side.



On KB41602 ( which is only uhf ) the only class listed is MO. On the other 2 licenses, FX1, FX2

In my experience outside of Long Island

FX1 and FX2 from my monitoring are up/downlinks

IF the license only had FX1 generally those I find as Control stations at a Dispatch Center and the FX2 being the downlink instead of a microwave or hardline

 

[dave3825]

Quick glance shows I am only seeing activity on 453.4375

 

[k2hz]

In my experience outside of Long Island

FX1 and FX2 from my monitoring are up/downlinks

IF the license only had FX1 generally those I find as Control stations at a Dispatch Center and the FX2 being the downlink instead of a microwave or hardline

When the plan for links was abandoned in some Upstate areas, as I described in my previous post, they started using the licensed frequencies for flagger portables. This was years ago so don't know if still active.

 

[Don57]

I plugged these in before last storm and caught plow ops on 453.4375 referencing Robert Moses Causeway, Sunken Meadow, 454 and 106/107 during the storm. They are listed these Suffolk licenses.

KB41602
KLG421
WNFG794

453.0625
453.3375
453.4375 82.5 I believe
453.6125
453.7625

458.0625
458.1375
458.3375
458.4375
458.6125
458.7625

Anyone else have these programmed and if so have you heard anything?

I’m on the south shore in western Suffolk. Had all of the frequencies programmed during the snowstorm we just had on Long Island. Didn’t hear a thing except for a message for a repeater in Selden and an announcement for a live net on I think they said Thursday nights.

 

[dave3825]

I’m on the south shore in western Suffolk. Had all of the frequencies programmed during the snowstorm we just had on Long Island. Didn’t hear a thing except for a message for a repeater in Selden and an announcement for a live net on I think they said Thursday nights.

453.4375 82.5 active last night and today. Checking storm run off basins on 111, other guys are picking up debris on LIE HOV shoulder and 2 guys were meeting up at exit 60. Presumably LIE. Also heard tree down left shoulder of Sagtikos. Listening to them now. Would imagine people closer to Hauppauge/Ronkonkoma would pick them up better.

Unsure of the overall operating area so not quite ready to make a sub yet.

 

[dave3825]

So after listening to recordings of low band and uhf, seems 453.4375 82.5 is tied to 47.24, Dot Suffolk Central. Have some chatter started on one and resumes on the other. Heard another guy ask something on uhf and got reply over low band.

 

[k2hz]

So after listening to recordings of low band and uhf, seems 453.4375 82.5 is tied to 47.24, Dot Suffolk Central. Have some chatter started on one and resumes on the other. Heard another guy ask something on uhf and got reply over low band.


View attachment 194756

453.4375 would be the downlink (FX2) from the KLG421 Base for the 47.240 RX. 458.4375 from the dispatcher would be the uplink (FX1) to the 47.32 Base TX. The Base may also have RX on Statewide 47.32 123.0 PL so you may also hear units from other areas on the downlink.

FCC Callsign KLG421 (NEW YORK, STATE OF D O T)

FCC Callsign KLG421 (NEW YORK, STATE OF D O T)

www.radioreference.com

 

[GTR8000]

Remember to check the trunked systems on the island, as NYSDOT has talkgroups on every P25 system in NYS! 😂

Too soon? 💀

 

[k2hz]

453.4375 would be the downlink (FX2) from the KLG421 Base for the 47.240 RX. 458.4375 from the dispatcher would be the uplink (FX1) to the 47.32 Base TX. The Base may also have RX on Statewide 47.32 123.0 PL so you may also hear units from other areas on the downlink.

FCC Callsign KLG421 (NEW YORK, STATE OF D O T)

FCC Callsign KLG421 (NEW YORK, STATE OF D O T)

www.radioreference.com

It has been very many years since I was involved with the NYSDOT system. At that time the standard remote base station was a 2 frequency transmitter (F1 Local, F2 Statewide) and 2 separate receivers (F1 local mobile to base, F2 Statewide). I believe both frequencies were generally monitored but F2 could be muted. In some cases F1 local base TX was also 47.32 but with a different PL from statewide 123.0. That appears to be the case here (Local PL 167.9)

As I mentioned before in this post, the UHF links generally were not used in the Upstate area. Telco leased lines were generally used.

BTW - The FCC generally no longer permits UHF control links so this is probably "grandfathered" or on a special waiver. If you are only hearing the mobiles or other units and not the dispatcher on 453.4375, it is definitely a FX2 downlink and not a normal UHF FB2 repeater.
"FX" stations are generally required to be low power and directional antennas so not likely to be heard over a wide area.

 

[dave3825]

Going to try to get the discone back up and stick all DOT Suffolk and Statewide freqs in SDRT. Was just using the 436 with no delay during the last snow storm.