Help identifying possible frequency range of antenna?

[dave3825]

The data telemetry range is 902-928, correct?

Telemetry data can be anywhere. Seen it in low band, vhf, uhf etc

From what I was told, it's all analog.

However, he did say it's all analog. However, I'm not confident in his Information. It wouldn't surprise me if he gave me vague information and told me it was analog just to throw me off the trail.

Looks that way as that's a typical response from those when they suspect someone may be up to no good. And especially since In the late 90's, upgrades were done that include the use of digital headers.

At one time they had double the amount of sirens. And in early 2000's, they downsized to the 27 that operate today. Majority of the 27 are Whelen WPS-2810, a few 2809 and almost 10 2906.

 

[kf8yk]

I suspect these Part 101 MAS licenses are used for siren control:

WNTU290 952.15625/928.15625 MHz, licensed to Tooele Emergency Management
WNTU288 952.23125/928.23125 MHz, licensed to Tooele Emergency Management
WNTU292 952.29375/928.29375 MHz, licensed to Tooele Emergency Management
WQQC516 941.45625/932.45625 MHz, licensed to City of Tooele

All of these licenses are 12.5 kHz bandwidth, with emission designators including analog FM. All list the GE/MDS 9710 radio which is a popular SCADA/siren control radio.

With Multiple Address Systems (MAS) the master station, typically located at a tower site transmits on the higher of the paired frequency & the remote terminal, or siren in this case, transmits on the lower frequency. With MAS licenses only the master station coordinates will appear on the license, the remotes are treated like mobile units on a LMR license.

 

[ladn]

I’m trying to find the activation frequency they use. (It’s not listed anywhere that I can find, and nothing found on the FCC database is helpful).

Another tactic to try is to file an FOIA (Freedom of Information Act) request with the agency responsible for the equipment.

 

[model2guy]

Another tactic to try is to file an FOIA (Freedom of Information Act) request with the agency responsible for the equipment.

That is something I’ve considered, I’m just not positive if I need to go through the county or the state. The system was put in for accidental chemical spills at the army depot, (where they were disposing of radioactive materials from WWII) and I’m not sure if that’s a county thing or a state thing.

 

[model2guy]

I suspect these Part 101 MAS licenses are used for siren control:

WNTU290 952.15625/928.15625 MHz, licensed to Tooele Emergency Management
WNTU288 952.23125/928.23125 MHz, licensed to Tooele Emergency Management
WNTU292 952.29375/928.29375 MHz, licensed to Tooele Emergency Management
WQQC516 941.45625/932.45625 MHz, licensed to City of Tooele

All of these licenses are 12.5 kHz bandwidth, with emission designators including analog FM. All list the GE/MDS 9710 radio which is a popular SCADA/siren control radio.

With Multiple Address Systems (MAS) the master station, typically located at a tower site transmits on the higher of the paired frequency & the remote terminal, or siren in this case, transmits on the lower frequency. With MAS licenses only the master station coordinates will appear on the license, the remotes are treated like mobile units on a LMR license.

Sweet, that’s very helpful. I’ve looked through the fcc database and haven’t been able to find any licenses in the 900mhz range that are set up this way. I’ll definately try these and see what I can get.

 

[mmckenna]

That is something I’ve considered, I’m just not positive if I need to go through the county or the state. The system was put in for accidental chemical spills at the army depot, (where they were disposing of radioactive materials from WWII) and I’m not sure if that’s a county thing or a state thing.

I would likely be licensed to the county, so going through the County process for FOIA requests would be the right place to start. Especially if it's run out of the County EMA office.

Unless it's owned by the US Army, then you are out of luck. They are not governed by the FCC, rather they use the NTIA, National Telecommunications and Information Administration, and getting frequency info out of them is extremely difficult and in some cases, impossible. Some NTIA frequency allocations are quite a bit different that what you'd see on the non-federal side.

 

[BinaryMode]

It'd be pretty cool if you do get the frequency because if it is a DTMF signal you can use that to alert you and have a Raspberry Pi or small computer flash a strobe in your house and all kinds of cool stuff. I can do stuff like that with an ADS-B feed and its API... Military plane shows up in my area, and It'll trigger an alert and flash a strobe.

When I was in Ogden I saw what looked like sirens on a telephone pole. But I'm wondering if they were old? Hill AFB is nearby however... Not sure if related. Would be a nuke target for sure.

 

[model2guy]

I would likely be licensed to the county, so going through the County process for FOIA requests would be the right place to start. Especially if it's run out of the County EMA office.

Unless it's owned by the US Army, then you are out of luck. They are not governed by the FCC, rather they use the NTIA, National Telecommunications and Information Administration, and getting frequency info out of them is extremely difficult and in some cases, impossible. Some NTIA frequency allocations are quite a bit different that what you'd see on the non-federal side.

I am reluctant to believe it’s the US army, I’m pretty sure it’s county owned. I know the army depot does have its own system, that is activated completely separately.

 

[dave3825]

The sirens at the army depot are a Federal Signal STH-10 and an Alerting Communicators of America P-15.

 

[mmckenna]

I am reluctant to believe it’s the US army, I’m pretty sure it’s county owned. I know the army depot does have its own system, that is activated completely separately.

You are probably correct. But sometimes people assume the FCC is the only agency involved. Federal users don't fall under FCC, so being aware of the NTIA is important if you are a scanner hobbyist and you run across federal users.

 

[model2guy]

The sirens at the army depot are a Federal Signal STH-10 and an Alerting Communicators of America P-15.

There’s a bunch of 2810s there too. I can send a link to the Utah siren map if anyone is interested

 

[FedFyrGuy]

CSEPP and The Tooele County Outdoor Warning System​

Tooele County, UT

Tooele County, located in the U.S. state of Utah, operates and maintains an all-hazards siren system of 27 sirens, comprised of 14 Whelen WPS-2810s, three 2809s, nine 2806s, and one 2906. The system is tested every Wednesday at 4:00PM, depending on dispatch availability. The system sounds for...

wiki.airraidsirens.net

 

[model2guy]

CSEPP and The Tooele County Outdoor Warning System​

Tooele County, UT

Tooele County, located in the U.S. state of Utah, operates and maintains an all-hazards siren system of 27 sirens, comprised of 14 Whelen WPS-2810s, three 2809s, nine 2806s, and one 2906. The system is tested every Wednesday at 4:00PM, depending on dispatch availability. The system sounds for...

wiki.airraidsirens.net

That’s my page lol

 

[model2guy]

It'd be pretty cool if you do get the frequency because if it is a DTMF signal you can use that to alert you and have a Raspberry Pi or small computer flash a strobe in your house and all kinds of cool stuff. I can do stuff like that with an ADS-B feed and its API... Military plane shows up in my area, and It'll trigger an alert and flash a strobe.

When I was in Ogden I saw what looked like sirens on a telephone pole. But I'm wondering if they were old? Hill AFB is nearby however... Not sure if related. Would be a nuke target for sure.

You wouldn’t happen to know where in Ogden those sirens are? It would be really nice to map those if you can remember anything about them. I appreciate all the help.

 

[FedFyrGuy]

You wouldn’t happen to know where in Ogden those sirens are? It would be really nice to map those if you can remember anything about them. I appreciate all the help.

Tooele County

Tooele County (too-willuh) tests and maintains a system of 27 Whelen sirens, a majority of which being 2806s or 2810s. The county tests voice and whoop signals every Wednesday at 4:00PM, depending on dispatch availability. After a new chemical weapons incinerator was constructed at Tooele Army

www.utahsirens.com

 

[BinaryMode]

You wouldn’t happen to know where in Ogden those sirens are? It would be really nice to map those if you can remember anything about them. I appreciate all the help.

No, sorry, it's been over 20 years. What I saw though may have been decommissioned. And they may not even be an air raid siren or whatever. But it looked kinda like it.

Tidbit of the day, Marie Osmond was born in Ogden if I'm not mistaken. Though, I never cared for that town... I only lived near there for a year and a half going to trade school.

Also, the famous "Janet aircraft" are or were registered in Layton. Which is near Hill AFB.

 

[model2guy]

Sweet, that’s very helpful. I’ve looked through the fcc database and haven’t been able to find any licenses in the 900mhz range that are set up this way. I’ll definately try these and see what I can get.

Thank you for your help, it’s greatly appreciated. Those licenses you sent me were the frequency. Thank you for finally ending the 8 month saga to find this frequency.

 

[model2guy]

Update: Thank you to everyone here for your help in identifying these frequencies. I was able to use some of the information to locate the frequency. Not sure if I’ll post it here or not, I’m concerned about city officials finding out someone has it, and changing it.

 

[mmckenna]

Update: Thank you to everyone here for your help in identifying these frequencies. I was able to use some of the information to locate the frequency. Not sure if I’ll post it here or not, I’m concerned about city officials finding out someone has it, and changing it.

This will probably upset the usual bunch, but I agree that there are some things that do not belong on the internet. There are those that have proven they don't have the maturity or self control to have access to two way radios and detailed frequency/tone information for radio systems.

 

[model2guy]

This will probably upset the usual bunch, but I agree that there are some things that do not belong on the internet. There are those that have proven they don't have the maturity or self control to have access to two way radios and detailed frequency/tone information for radio systems.

Exactly my concern. As much as I want to post it as a middle finger to the EMA guy for being a total jerk about it, I think it’s better that I don’t.