Tower Identification

[Jphila20]

I listen to trunked simulcast P1 systems. Ohio MARCS-IP: Multi-Agency Radio Communications Site: Cuyahoga Co Simul

Is there software that can identify which tower I'm actually receiving from?

I currently use both Unitrunker and SDRTrunk.

Thanks!

John

 

[RaleighGuy]

I listen to trunked simulcast P1 systems. Ohio MARCS-IP: Multi-Agency Radio Communications Site: Cuyahoga Co Simul

Is there software that can identify which tower I'm actually receiving from?

I currently use both Unitrunker and SDRTrunk.

Unitrunker, SDRTrunk, DSD+, and just about all of them, especially if you load the system into the software. My personal favorite is DSD+ with a premium subscription to RR you can load the list of sites (towers) downloaded from the RR database and it shows you.

 

[nd5y]

I listen to trunked simulcast P1 systems. Ohio MARCS-IP: Multi-Agency Radio Communications Site: Cuyahoga Co Simul

Is there software that can identify which tower I'm actually receiving from?

The link you posted is for a simulcast site. All the tower locations transmit the exact same signal. Modern scanners and software can only tell you the site number. A simulcast site with multiple tower locations all transmit the same site number so there is no way to tell which ones you are receiving.

 

[dave3825]

Those programs can tell you what site your connected to but not the individual subsites within the site itself.

A KrackenRf might be able to..

 

[nd5y]

A KrackenRf might be able to..

How? It's a direction finder. You won't get meaningful readings on simulcast signals coming from different directions.

 

[dave3825]

I don't have one but would think if the CC from a simulcast site was plugged in, wouldn't it show on the screen the transmitters it sees?

 

[nd5y]

I don't have one but would think if the CC from a simulcast site was plugged in, wouldn't it show on the screen the transmitters it sees?

I don't think so. As far as I know that type of diection finder can only measure the time delay and phase difference between its antenna ports. And that's only good if the antennas are identical, spaced properly, and have the same electrical length of coax.

If there are multiple signals that are all in phase to begin with and coming from different directions then I don't see how it would be able to tell the difference or display anything useful. Maybe the same with strong multipath reflections from one transmitter. Maybe it can determine the strongest signal and display that.

 

[nd5y]

On theKrakenRF web site it says:
Having 2-3 or more fixed stations at appropriate geographic locations will allow users to instantly determine the location of a transmitter (assuming no significant multipath effects).

So if it can't handle multipath it would probably be totally useless for finding simulcast transmitters.

 

[WA0CBW]

As you get closer to a single site in a cell it will work but it will be erratic as it hears and the display jumps to various sites in the cell.

 

[Jphila20]

I didn't know if a each tower had a specific identifier on a simulcast system.

Thanks!

John

 

[slicerwizard]

I didn't know if a each tower had a specific identifier on a simulcast system.

Unlikely. Never heard of that being the case.

 

[nd5y]

I didn't know if a each tower had a specific identifier on a simulcast system.

If they did then it wouldn't be simulcast.

They obviously need some type of site ID on the backhaul side between the sites and the controller but that's totally different.

 

[maus92]

The link you posted is for a simulcast site. All the tower locations transmit the exact same signal. Modern scanners and software can only tell you the site number. A simulcast site with multiple tower locations all transmit the same site number so there is no way to tell which ones you are receiving.

And you may be receiving signals from several subsites ("towers") simultaneously.

 

[richardbritt]

I listen to trunked simulcast P1 systems. Ohio MARCS-IP: Multi-Agency Radio Communications Site: Cuyahoga Co Simul

Is there software that can identify which tower I'm actually receiving from?

I currently use both Unitrunker and SDRTrunk.

Thanks!

John

If you have a Pro-2096, Pro-651, Whistler Ws-1040, get a copy of Pro96com software online doing a Google search. Follow the instructions in the software and on the website. It will log all the transmissions on a p25 tower site by radio ID, which transmitter is actually transmitting real-time, and what are the frequencies for the site. It will also show you which specific site is transmitting.

 

[ecps92]

If you have a Pro-2096, Pro-651, Whistler Ws-1040, get a copy of Pro96com software online doing a Google search. Follow the instructions in the software and on the website. It will log all the transmissions on a p25 tower site by radio ID, which transmitter is actually transmitting real-time, and what are the frequencies for the site. It will also show you which specific site is transmitting.

It will show the specific ZONE being received, Not a specific Site for a wide-area Simulcast

 

[richardbritt]

Here is the tower site for the Gatesville DOC on the NC VIPER system using Pro96com software from last week when I was running around to different areas confirming transmission frequencies. It shows 3-026 which is the site as listed in the database

 

[dave3825]

OP was asking if there was a way to tell which tower on a simulcast site is being received. The site in your pic is not simulcast.

 

[WA0CBW]

A simulcast site (and all its sub-sites) are identical and appear as only one site. They all carry the same talk groups and have the same frequencies. Depending on your location you may be receiving a signal from one site, several sites or all the sites. Also remember that a system can be a combination of single sites, multi-sites or simulcast sites.
BB

 

[richardbritt]

It's not simulcast, none in my area. I was just offering something to try that might work

 

[dave3825]

Any idea if that software works on tapped pro 93/95?