I was considering programming my SDS 200 using TGID only. Going thru my favorites I have many of them show frequency. (Example Comal County Sheriff (Tx) 155.95000) Then under my TGID favorites I have Comal County Sheriff TGID 46006. Do I program both or TGIDs only. Also as I go through my favorites (Comal County Tx) under GATRRS - Comal County is shows a list of frquencies, also same for New Braunfels. Since I was trying to program TGIDs only, do I need to keep the frequencies or are they just taking up space?
SDS100/SDS200: Programming question
- Thread starter Checkmateking2
- Start date
Are you referring to the frequencies that are part of a trunked radio system (proper name is a site)? Or conventional frequencies that are not part of a trunked radio system? One or more sites is required to make a TRS scan. Conventional channels may be redundant to the TRS.
Provide links to the RadioReference database for what you are asking about.
Provide links to the RadioReference database for what you are asking about.
I have to ask.
Do you understand trunking???
Your radio scans sites - which have frequencies (control channels).
It DOES NOT SCAN TGs.
The radio 'listens' to the control channel for activity (called a channel grant).
If there is a channel grant, both ends of the transmission tune to a voice channel and the transmission takes place.
If there is no channel grant for XX milliseconds, the radio moves on to scan the next site (control channel / frequency).
Scanning is simply the repetition of this cycle.
Trunk groups are just a number assigned by the system to identify a radio - or common group of user radios that the channel grant instructs to tune to the voice channel.
Trunking Basics - The RadioReference Wiki
How does trunking work? | Tait Radio Academy
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RRDB says:
Comal County Sheriff
| Greater Austin/Travis Regional Radio System (GATRRS) Project 25 Phase II | Comal County is migrating all communications to this system |
| Frequency | Input | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|---|
| 155.595 | 154.710 | KVF679 | RM | 300 NAC | CCSO 1 South | Ch. 1 South (includes Garden Ridge Police) | P25 | Law Dispatch |
| 156.000 | 153.965 | KVF679 | RM | 300 NAC | CCSO 2 North | Ch. 2 North (includes Bulverde Police) | P25 | Law Dispatch |
Program whichever conventional frequency you're interested in & if you ever stop hearing traffic then you'll know they've migrated full time to
| GATRRS |
