800 MHz programming

[ff210327]

Is it possible to program a Motorola 800 megahertz Digital trunking radio to receive a talk group and
not be able to transmit on it?

On a VHF system you would simply not put in the pl code so it couldn't activate the repeater is there equivalent in an 800 megahertz digital system??

Thanks

 

[jtech48]

This link will provide you with the information your seeking, if it does not suffice, Google is your friend.
http://forums.radioreference.com/mo...ou-want-monitor-trunked-system-moto-read.html

 

[W8RMH]

Trunking systems are different as they require the radio to connect and identify to the system itself where listening to VHF is just listening. If a trunking system receives an unauthorized connection it can permanently disable the unauthorized radio.

 

[ff210327]

I am a ff/EMT I have an authorized radio on the 800 system... What I'm trying to figure out is if our com center(not me) can have a talk group added that gives us the ability to monitor or scan a talk group but not nessisarily transmit on.

We are exploring the possibility of getting the police channel into our existing templates for better inter agency communication and safety however there is concern about us being able to possibly transmit on that talk group for legal reasons. I'm just trying to assertain if the system is capable from a theoretical stand point of allowing a radio to monitor and not transmit on a talk group programed into it.


Thanks

 

[MTS2000des]

I am a ff/EMT I have an authorized radio on the 800 system...

Then the best route is to contact the help desk/support desk for the system and make your programming template request to them.

IWhat I'm trying to figure out is if our com center(not me) can have a talk group added that gives us the ability to monitor or scan a talk group but not nessisarily transmit on.

See above response. It is possible. The key here is getting it authorized. The last thing any system manager wants to hear is rogue programming. We don't take kindly to that.

We are exploring the possibility of getting the police channel into our existing templates for better inter agency communication and safety however there is concern about us being able to possibly transmit on that talk group for legal reasons. I'm just trying to assertain if the system is capable from a theoretical stand point of allowing a radio to monitor and not transmit on a talk group programed into it.

Depending on the type of system/subscribers, in a Motorola Astro 25 world, it is entirely possible to create a personality in a trunked subscriber template/codceplug with RX only talkgroup(s). The radio will still register (affiliate) on them, allowing system admins to have good control and accounting of radio usage, but they are prohibited from requesting resources to transmit on those talkgroups. Media radios are often setup like this.

Again, getting this done usually requires the chiefs of those departments to sign off on it, and the radio system people to agree to do it. Your agency radio system use agreement may have to be modified. Each system is different and may have policies to work through.

In my agency, we frown on "one off" templates because this is more to manage when radios come in for service. If your system is small, they may not care. But when you have thousands of subscribers, it can become a nightmare quick to deal with all the "one off" requests. Just throwing that out there so if you get shot down by your radio team, there may be reasons for it.

 

[AuntEnvy]

Of course it's possible

Doing so without permission is bad form, and quite possibly a liability and illegal.

Our system is set up to scan the appropriate agencies in each municipality, along with the county dispatch for fire and law. We can transmit on the law/fire TG's but is not protocol and heavily frowned upon unless told to do so by the 911 center. We have a county-wide inter-agency TG that is also programmed into every radio and required to be scanned. It is for all other communications between all agencies/depts.

There should have been a discussion etc. of some sort prior to the programming for your system as to what each dept. needs/requires. I'm not sure how big the system is but it would appear they didn't feel it necessary. It's hard to believe they don't have a TG for inter-dept. emergency coms.

 

[ff210327]

There was a discussion when the system was set up, circumstances have changed slightly and we are looking at going back to the 911 board, the heads of the agencies, and addressing the need for us to have their frequency on an RX status. But before we put a lot of time into it I wanted to verify that from a technology standpoint we weren't going to have any issues. Also in case the administrators have never heard of this before I want to verify from an independent source that it was technically possible.


I appreciate all your feed back and input.

Thanks