APX Can APX be programmed to receive only a radio ID instead of TG ID?

[phillydjdan]

I recently saw a radio in a fire station that seemed to be programmed to receive only a certain radio ID (the dispatcher) versus the normal TG ID. They called it the PA radio. When a transmission from a dispatcher was initiated, the screen displayed the Radio ID, not the channel. How is this accomplished on the CPS? I've never seen that before.

 

[KevinC]

Private Call?

 

[phillydjdan]

Could be! I mean, the other radios around it were all scanning and monitoring TGs and the same voice was coming across. I'm just wondering how to setup something like that. I've never delved into that part of the CPS. No other radios were heard, just the dispatch console radios. And the screen never displayed any channel on it.

 

[wa8pyr]

I recently saw a radio in a fire station that seemed to be programmed to receive only a certain radio ID (the dispatcher) versus the normal TG ID. They called it the PA radio. When a transmission from a dispatcher was initiated, the screen displayed the Radio ID, not the channel. How is this accomplished on the CPS? I've never seen that before.

Private Call?

Call Alert. Rig up a circuit with a relay using the Horn/Lights connections; run the audio output from the radio to the PA through the relay.

Leave the radio set on the dispatch talkgroup; when the dispatcher sends a Call Alert to that radio the relay will pass audio to the PA and automatically reset after the preset time. The circuit to use is in the installation manual. The radio will display the ID of the console or radio that sent the call alert.

I can't remember off the top of my head what the correct settings are in CPS.

 

[KevinC]

Maybe "In-Call User Alert" then.

 

[phillydjdan]

Call Alert. Rig up a circuit with a relay using the Horn/Lights connections; run the audio output from the radio to the PA through the relay.

Leave the radio set on the dispatch talkgroup; when the dispatcher sends a Call Alert to that radio the relay will pass audio to the PA and automatically reset after the preset time. The circuit to use is in the installation manual. The radio will display the ID of the console or radio that sent the call alert.

That isn't it. They dont have an alerting sytem, they only have the external speaker audio going into a PA amp that feeds several speakers through the building. There is no Call Alert sent by dispatch.

 

[KevinC]

That isn't it. They dont have an alerting sytem, they only have the external speaker audio going into a PA amp that feeds several speakers through the building. There is no Call Alert sent by dispatch.

I vote for In-call User Alert. Radio will stay silent on a TG until the alert is sent, the the TG audio will be heard.

 

[Thunderknight]

Dedicated station alert talk group? Then a multiselect with that and the regular dispatch TG. It’s not a patch so you would not hear field units.

 

[phillydjdan]

I know from monitoring system control channel logs that there isn't a dedicated alert talkgroup. The FD uses 2 fire channels and 2 EMS channels. They do sometimes multi-select, but on a standard radio codeplug that doesn't affect operation. The radio just stops on whichever talkgroup it lands on first and you hear the audio.

I know for a fact there is no "call alert" sent. The dispatcher holds down a clearing tone for a moment and then announces the run. It's a single 1000 hz tone and it's length is dependent on the how long the dispatcher holds it down.

For this PA radio to function properly it would have to listen to 2 talkgroups to "play" the dispatches. It's confusing to me because it seems to not be set to a particular channel at all. Is that even possible? That's were I get lost.

 

[jeepsandradios]

Could be an announcement group in the radio....

 

[wa8pyr]

I know from monitoring system control channel logs that there isn't a dedicated alert talkgroup. The FD uses 2 fire channels and 2 EMS channels. They do sometimes multi-select, but on a standard radio codeplug that doesn't affect operation. The radio just stops on whichever talkgroup it lands on first and you hear the audio.

I know for a fact there is no "call alert" sent. The dispatcher holds down a clearing tone for a moment and then announces the run. It's a single 1000 hz tone and it's length is dependent on the how long the dispatcher holds it down.

For this PA radio to function properly it would have to listen to 2 talkgroups to "play" the dispatches. It's confusing to me because it seems to not be set to a particular channel at all. Is that even possible? That's were I get lost.

That is odd. I'm trying to figure out how the station radio is being alerted; there has to be some mechanism for the station radio to stay muted until the dispatcher does something to unmute it; an announcement group would involve other talkgroups so that's apparently not it, but if it isn't Call Alert or a dedicated talkgroup, what?

I'll have to play with In-Call User Alert a bit more; I'm curious whether it's a function of Call Alert, or a separate function all it's own.

 

[GmanX]

Is the station alerted over the radio or through their network. The city up here alerts through the network. Audio is received on a dedicated radio that's unmuted but the network alert Something like Westnet

 

[overtheair]

Voice mute is probably enabled and a In-Call user alert is sent on the backend