460.8125

[Analogrules]

I recently heard First Aid dispatched to Roselle, NJ on 460.8125. I found this very strange, considering this frequency is licensed to a Hospital way up in Passaic. Why would they be dispatching first aid to Roselle??

 

[robbinsj2]

Why would they be dispatching first aid to Roselle??

Without having heard what you heard, odds are against it being the Passaic County hospital which was dispatching EMS to Roselle.

The FCC database is a useful tool, but is intricate and is by no means an accurate and complete representation of actual frequency usage. Many licensees' operations vary a bit (or a lot) from the license, many former licensees never bothered to renew their licenses, and many users never bother getting licensed to begin with. In some circumstances licenses aren't even needed for fully-legal usage.

You may have hit upon a link channel, which would be used in lieu of microwave or a landline to connect to a remote transmitter or receiver. Monitor it more, see if you can gather callsigns or unit identifiers. With that and other knowledge (what ALS/BLS serves Roselle? where were you when you received it? etc.), try finding a corresponding well-known channel which has the same traffic at the same moment. Check whether you hear both sides of the communication or only one -- if you hear both then it is less likely to, but may still, be a link. If you hear only the dispatcher then it may be their connection to a remote tower; if you hear only the units then it may link a satellite receiver.

 

[Analogrules]

Yes, I agree the FCC database is by no means 100% accurate. However, it's always a good place to start when coming across an unknown frequency. I will continue monitoring 460.812 and will post if I hear anything else. I DID hear both sides of the transmission (dispatcher and the ambulance). Normally, Roselle First Aid is dispatched over their FD frequency in the 500 MHz range. I do not know which actual service currently serves Roselle, only the frequency that they "normally" dispatch out on. I'll keep you posted if anything else comes up. Thanks for the input.

 

[Boss]

Roselle EMS

Roselle EMS call are handled by the FD.They are dispatched by Cen-Com on 501.1875 88.5 pl.ALS calls are dispatched by MONOC on 451.0875 pl 210.7 Roselle Fire ambulances are Rescue 1 & 2 and #291 is the base station located at Fire Headquaters. BTW the dispatchers at Cen-Com are very professonal .

 

[Analogrules]

Thanks for the additional information. Well, it's confirmed. I'm hearing "Medic Units" such as Medic One, Medic Two, etc.... on 460.8125. It's not very active, but I'm definitely hearing medic units on that frequency dispatched to Elizabeth and Roselle so far. It's definitely not an image, but possibly an input to another frequency? It's still odd that nothing in Union County is licensed for that frequency.

 

[mondaro]

I thought MONOC for the Northern units was 451.475 PL 210.7 ? Anyway search out the PL Tone this evening, it seems like some type of link for Cencom, the PL tone is 136.5 Confirmed for 460.8125 MHZ. While where on Cencom here is some other freqs there using 465.8375 PL 67.0 and 466.0875 PL 186.2.

 

[Analogrules]

Neither of my scanners have PL capability, therefore I won't be able to indicate the PL tone. However, another idea is perhaps 460.8125 is an input to 465.8125 (perhaps another Cen COM repeater frequency). I practically live around the corner from Roselle, so it's very possible I'm receiving inputs as well.

 

[Joseph11]

It would be the other way around. From 450-470 MHz, inputs are 5 MHz up from the output.

 

[Boss]

Monoc

I thought MONOC for the Northern units was 451.475 PL 210.7 ? Anyway search out the PL Tone this evening, it seems like some type of link for Cencom, the PL tone is 136.5 Confirmed for 460.8125 MHZ. While where on Cencom here is some other freqs there using 465.8375 PL 67.0 and 466.0875 PL 186.2.

My mistake on Monoc. It should be 451.475 pl 210.7 Sorry

 

[rr60]

Cencom Links No License

This would not be the first time that UHF is used to rebroadcast VHF comms.

I have run into this FREQUENTLY with CENCOM communications, no FCC license.

The question is who is rebroadcasting these? Is it Cencom? Don't know.

I just close called a new one 1/2 mile from Overlook, 461.0125 ,no license.

I am not certain but it may be VHF medics in Morris County.

 

[JoeS156]

CenCom uses UHF links between Overlook Hospital and their remote towers. Each tower (Elizabeth, Rahway, Irvington, Morristown...) has an inbound and outbound UHF frequency. They replaced their copper links about 10 years ago. If you program an uplink into the scanner, you will hear all comms from 155.355 that are picked up by that tower, but you will not hear CenCom if they are trasmitting on that tower.

 

[SCPD]

I thought CENCOM had a link or receive site at each Hospital for the medic units they serve.