Digital Trunk programming question.

[DigitalMDX]

I have a Digital Trunking programming question.
When programming a scanner with ProScan using the RadioReference Database there are 3 sites listed. One for N Thurston, One for SW Thurston and one for Yelm, a city to the south (All within my county and all having radio transmissions I would be interested in).

In the download process I have the option to select one, two or all of these locations. I live in the "N Thurston" area, so that is the only one I've selected. I would like to pick up as much traffic as possible and am wondering if I should check (include) the other two locations or if that would be detrimental. I'm not sure if those sites are just for coverage and everything is relayed though each site anyway, or if I would need to have all 3 sites selected.

Thank you

 

[icom1020]

" N County" does pretty good on its own. I can recieve it all the way down to Chehalis. Maybe place Yelm in another function button with the different county law and fire TGs. I'll listen to that site to hear what affiliates

 

[DigitalMDX]

Maybe I'll setup another scanner with just Yelm and compare the two side by side off of the same outside antenna. It's good to know the "N Thurston" is reaching Chehalis so perhaps the other two sites are to cover dead areas for portables in those areas. Thanks!

 

[jtwalker]

It is a trade-off on scan speed versus possibly missing traffic that is on the other two sites but not on the one site you pick. I would listen to them all for a while, logging in ProScan to see what TGs come through and on which site(s) and decide after reviewing the results.

 

[DigitalMDX]

That's the part I'm not understanding. The top 'tree' is "Thurston County" (12 frequencies and 74 talk groups). Then under "Thurston County" are the three sites with only 4 frequencies each, making up the 12 total frequencies (No talk groups listed, just frequencies). ALL of the talk groups are under "Thurston County" (See graphic in original post), so by selecting one of the other 'sites' I'm only gaining 4 frequencies and no talk groups as they are all under "Thurston County". That's what leads me to believe these are just radio sites to pick up the portable radios in previously poor reception areas. If that is true, then is that traffic from "Yelm" relayed to the "N Thurston" site?

 

[icom1020]

I only heard Law OPS 1 and Fire OPS 1-4 on "Yelm" The S County site wasn't all that strong in the S.end, which i took out, so I'm thinking N Thurston is the primary simulcasting.

 

[devicelab]

That's what leads me to believe these are just radio sites to pick up the portable radios in previously poor reception areas. If that is true, then is that traffic from "Yelm" relayed to the "N Thurston" site?

It depends on how the system is designed. RR doesn't give you enough info to draw any conclusions. You'd have to listen to the system to know for certain.

It's possible the Yelm site only lets specific users in and broadcasts only Yelm-specific TGIDs. Until someone verifies (either way) then we can't know for certain. I'd guess that every Tier 1 agency is simulcasted on every site. Smaller agencies/entities may be restricted to certain sites.

For example, if Yelm School District were to join the system then those users would likely be confined to the Yelm site only.

 

[buddrousa]

It could be that if no Talkgroup is Affiliated with one of those Sites then they will not Transmit any Traffic.

 

[jtwalker]

That's the part I'm not understanding. The top 'tree' is "Thurston County" (12 frequencies and 74 talk groups). Then under "Thurston County" are the three sites with only 4 frequencies each, making up the 12 total frequencies (No talk groups listed, just frequencies). ALL of the talk groups are under "Thurston County" (See graphic in original post), so by selecting one of the other 'sites' I'm only gaining 4 frequencies and no talk groups as they are all under "Thurston County". That's what leads me to believe these are just radio sites to pick up the portable radios in previously poor reception areas. If that is true, then is that traffic from "Yelm" relayed to the "N Thurston" site?

This is how a trunked system shows up. The sites and talkgroups are not subordinate to the other, just both exist as part of the system setup.

 

[BillsTow]

We are in Yelm, and my drivers are all over... we hear nothing on the Yelm frequencies.. must be for future expansion just like many of the talk groups. We have also heard nothing on the N Thurston frequencies..

Anyone scanning WSP olympia on TG 59108?

 

[DigitalMDX]

We are in Yelm, and my drivers are all over... we hear nothing on the Yelm frequencies.. must be for future expansion just like many of the talk groups. We have also heard nothing on the N Thurston frequencies..

Anyone scanning WSP olympia on TG 59108?

Interesting. What scanner do you have?

 

[icom1020]

I hear Olympia WSP on that talkgroup, however I would also monitor 154.920 with a P25 NAC of D10. Yelm, If they're not on155.415, I'm not sure what they're using. I'm too far away to listen

 

[BillsTow]

We use SPS100's primarily... We receive the talk groups, but not on the Yelm Frequencies...

 

[BillsTow]

Icom 1020 ----- Any trick to programming 59108? We don't hear anything on ANY of the capitol peak or Maxwell frequencies, and we have tried from Olympia which should have great reception. Normal p25 system? Thanks!

 

[icom1020]

I just run the p25 VHF 154.920 NAC D10. I believe in some locations, the trunk or VHF conventional switches back and forth , from my knowledge. I've had the 700 mhz drop out in places around Olympia on a handheld. With an external antenna not so much.

Maxwell I have not received at all. I'm not sure that Dist 8 uses that except maybe Bremerton. I may reprogram to see if it's changed

 

[icom1020]

I just run the p25 VHF 154.920 NAC D10. I believe in some locations, the trunk or VHF conventional switches back and forth , from my knowledge. I've had the 700 mhz drop out in places around Olympia on a handheld. With an external antenna not so much.

Maxwell I have not received at all. I'm not sure that Dist 8 uses that except maybe Bremerton. I may reprogram to see if it's changed

Well I reprogramed Maxwell in the Unication and recieved Olympia area , with one or 2 bars. Not very strong.

 

[BillsTow]

Well I reprogramed Maxwell in the Unication and recieved Olympia area , with one or 2 bars. Not very strong.

Thanks for that... One of my drivers reported hearing 154.920 while on-scene with WSP yesterday... But we get nada on the talkgroupin Yelm. where are you located?

 

[icom1020]

Tumwater. Are you trying to hear something specific regarding Yelm?

 

[BillsTow]

We are having an issue with TG 59108 (WSP Olympia) We hear nothing on it even though we know its quite active. The other issue we have is hearing Yelm's Car to Car on TG 50797 on T-comm. It stops on the channel but there no audio. We receive TCSO car to car just fine, but somehow not Yelm's...

 

[icom1020]

I suspect Yelm C/C is encrypted. I believe the only C/C tg open is TCSO. As far as WSP, it's 700 mhz may be ineffective out there. I think 154.920 may be your only option.