California Radio Interoperable System (CRIS)

franks_ham

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I was in Sacramento over the past few days and I noticed that the Gold "patch" to both CRIS and the 7CHP IF/7CHP AIR/7CHP GGB channel was on and off even in the early morning hours.
What makes you think the 7CHP channels are on CRIS? Another talkgroup other than 861 maybe? That's where I've been hearing all the Gold traffic so far...No 7CHP channels. Although Air21 has come up on the Gold but that's normal.

Regards,

-Frank C.
 

LAflyer

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CRIS is probably like most new P25 trunked systems in that you won't hear TG traffic on a particular site unless there is a radio user associated with it.
Radio traffic is not endlessly broadcasted across the system unless a user on that site desires the specific TG.
 

franks_ham

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CRIS is probably like most new P25 trunked systems in that you won't hear TG traffic on a particular site unless there is a radio user associated with it.
Radio traffic is not endlessly broadcasted across the system unless a user on that site desires the specific TG.
Well duh...Most Astro25 cores are setup that way. :LOL:

Regards,

-Frank C.
 

KG7PBS

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Sorry LAflyer and Frank but I don’t think you guys really know what the system is doing or will do. Yesterday I went to San Francisco i80 from Sacramento and had the new 861TG with CHP Gold-3 The whole way there.
 

gmclam

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I drove back from WA State via I5 yesterday and started receiving traffic on "Base 12" (774.01825) about Redding. At first I thought it was just "local CHP" but they were giving downtown Sacramento locations. I wish I knew what tower(s) the traffic was coming from.
 

franks_ham

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I drove back from WA State via I5 yesterday and started receiving traffic on "Base 12" (774.01825) about Redding. At first I thought it was just "local CHP" but they were giving downtown Sacramento locations. I wish I knew what tower(s) the traffic was coming from.
I think you mean 774.08125. 774.01825 isn't a valid NorCal frequency. :sneaky::LOL: FWIW, that is a Voice Channel for Mt. Oso and Oat Mountain on CRIS...Could be for a few other sites too but that needs discovery.

Regards,

-Frank C.
 

Oakland_Tower

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I drove back from WA State via I5 yesterday and started receiving traffic on "Base 12" (774.01825) about Redding. At first I thought it was just "local CHP" but they were giving downtown Sacramento locations. I wish I knew what tower(s) the traffic was coming from.
774.08125 is CHP Base 12. My guess is you were receiving CHP Redding Dispatch which dispatches for the officers providing security at state buildings (former State Police), after hours. They may have been linked to the Capitol.
 

kj6psg

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Site 40 on the air.
BEE00.9D2-1.40 NAC $9D0
CC 770.44375
scc 774.06875
scc 773.56875
scc 774.05625
No neighbors, like all the other sites I can hear.

It's rather weak here and co-channel with Santiago, so I'd be guessing the Santa Barbara area. The high-level sites CA has licensed are on La Cumbre Peak and Santa Ynez Peak, so it's probably one of the two. Coverage on the 101 north of Las Cruces would differentiate the two sites, as that's where SYP obstructs LCP. Other locations are certainly possible, so go check if you can hear it!
 

norcalscan

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started receiving traffic on "Base 12" (774.01825) about Redding. At first I thought it was just "local CHP" but they were giving downtown Sacramento locations.
You have my attention. I'll try looking into this. I don't think that's one of the Southfork CRIS voice freqs, and the sites up here are still standalone, not linked yet. It also doesn't match the 700's that I have for our area CHP, but plenty of options for them to go to where I'm not normally listening. CHP Redding dispatch is right on I5 north of Redding.
 

gmclam

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774.08125 is CHP Base 12. My guess is you were receiving CHP Redding Dispatch which dispatches for the officers providing security at state buildings (former State Police), after hours. They may have been linked to the Capitol.
Correct about the channel & frequency. I scan all of these channels when anywhere in the state. You never know what's going to be active. At first I too expected this was from Redding (or even Chico) dispatch, but the call addresses were clearly for locations in downtown Sacramento.

This is really OT for this thread but I saw someone mentioning CHP traffic on another frequency from between Sacramento and the Bay Area. It seems there's a lot of places (in the spectrum) we can hear CHP radio traffic, not just low band VHF.
 

scannerboy02

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What makes you think the 7CHP channels are on CRIS? Another talkgroup other than 861 maybe? That's where I've been hearing all the Gold traffic so far...No 7CHP channels. Although Air21 has come up on the Gold but that's normal.

Regards,

-Frank C.
They are (have been) using 773.33125 (the 7CHP IF/7CHP AIR/7CHP GGB frequency) to rebroadcast the Gold Valley traffic off Pine Hill for a while now (at least a year, maybe longer). What has been noticed lately is that when Gold Valley is not being heard on 773.33125 it is being heard on CRIS TG:861 and when it is not being head on 861 it is being heard on 773.33125 or not at all (except on low band). The reasons/cause for this are unknown.

I drove back from WA State via I5 yesterday and started receiving traffic on "Base 12" (774.01825) about Redding. At first I thought it was just "local CHP" but they were giving downtown Sacramento locations. I wish I knew what tower(s) the traffic was coming from.
Did you happen to get a NAC, that could help narrow the sites down.

From my observations while I was out in California last week TG:861 was playing on EVERY site I heard, from the bay area all the way to the Sierra mountains so it's not out of the realm to think that it's playing on every/most sites in the state, or at least northern California.
 

scannerboy02

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Correct about the channel & frequency. I scan all of these channels when anywhere in the state. You never know what's going to be active. At first I too expected this was from Redding (or even Chico) dispatch, but the call addresses were clearly for locations in downtown Sacramento.

This is really OT for this thread but I saw someone mentioning CHP traffic on another frequency from between Sacramento and the Bay Area. It seems there's a lot of places (in the spectrum) we can hear CHP radio traffic, not just low band VHF.
774.08125 (what is/was officially labeled as 7CHP12) has been seen as a voice channel on CRIS sites so I'm sure that's what you were hearing as well.
 

franks_ham

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They are (have been) using 773.33125 (the 7CHP IF/7CHP AIR/7CHP GGB frequency) to rebroadcast the Gold Valley traffic off Pine Hill for a while now (at least a year, maybe longer). What has been noticed lately is that when Gold Valley is not being heard on 773.33125 it is being heard on CRIS TG:861 and when it is not being head on 861 it is being heard on 773.33125 or not at all (except on low band). The reasons/cause for this are unknown.
Oh, that's the issue, I don't hear Pine Hill from my location! So I wouldn't know what it's doing! :LOL:

Regards,

-Frank C.
 

scannerboy02

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From known data, this is the current reuse of the 7CHP channels that are now part of the CRIS trunking system. This migration of the 7CHP channels would tend to lead ME to thinking that CHP is going to be a major user of the trunking system if not for primary use most definitely for (encrypted??) tactical/records checks use.


Channel NumberChannel NameTX FreqCRIS Use
1VRS1769.16875
2VRS2769.18125
3VRS3769.19375
4VRS4769.21875
5VRS5769.41875
6VRS6769.43125
7VRS7769.44375
8VRS8769.46875
9VRS9769.66875
10VRS10769.68125
11VRS11769.69375
12VRS12769.71875
13VRS13769.91875
14VRS14769.93125
15VRS15769.94375
16VRS16769.96875Control Channel
177CHP01770.19375
187CHP02770.43125
197CHP03770.66875
207CHP04773.08125Control Channel
217CHP05773.29375Control Channel
227CHP IF773.33125
227CHP AIR773.33125
227CHP GGB773.33125
237CHPT1773.53125
247CHP06773.55625Control Channel
257CHP07773.58125Control Channel
267CHP08773.78125Control Channel
277CHP09773.80625Control Channel
287CHP10773.83125
297CHP11774.05625Control Channel
307CHP12774.08125Voice Channel
317CHP VA774.30625
317CHP SO774.30625
327CHP BO774.33125Control Channel
327CHP CE774.33125Control Channel
327CHP NO774.33125Control Channel
33PYRAMID VRS774.53125
347CHP IN774.55625
347CHP GG774.55625
357CHP CO774.58125
357CHP CAP774.58125
367CHP BB774.78125Voice Channel
367CHP HQ774.78125Voice Channel
377CHP MC3774.80625
387CHP MTT774.83125
 

vince48

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just as a side note, the system near me 769.40625 (maybe Blue Ridge), which i have monitored 24/7 for over two months and note a pep, a few radio associations and that's about it.
 

scannerboy02

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Site 40 on the air.
BEE00.9D2-1.40 NAC $9D0
CC 770.44375
scc 774.06875
scc 773.56875
scc 774.05625
No neighbors, like all the other sites I can hear.

It's rather weak here and co-channel with Santiago, so I'd be guessing the Santa Barbara area. The high-level sites CA has licensed are on La Cumbre Peak and Santa Ynez Peak, so it's probably one of the two. Coverage on the 101 north of Las Cruces would differentiate the two sites, as that's where SYP obstructs LCP. Other locations are certainly possible, so go check if you can hear it!
Just to confirm, the control channels are
CC 770.44375
scc 774.06875 **not 773.06875 ?**
scc 773.56875
scc 774.05625

If I had to take a guess (based on information I have) I would say La Cumbre but it could very well be someplace else.
 

scannerboy02

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Being that several "unknown" sites have popped up it sure would be nice if Cal OES could update the coverage maps on the website ;-) although I truly enjoy hunting for sites in the blind while I'm back home in California. It's a great way to see parts of the state that you otherwise wouldn't visit.
 

kj6psg

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Messages
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Location
Ventura, CA, USA
Just to confirm, the control channels are
CC 770.44375
scc 774.06875 **not 773.06875 ?**
scc 773.56875
scc 774.05625

If I had to take a guess (based on information I have) I would say La Cumbre but it could very well be someplace else.
Whoops

Code:
Network: BEE00.9D2
  Bandplan #0:   Base=851.00625   Offset=-45     Spacing=6.25  BW=12.5
  Bandplan #1:   Base=762.00625   Offset=+30     Spacing=6.25  BW=12.5
  Bandplan #2:   Base=851.0125    Offset=-45     Spacing=12.5  BW=12.5  Slots=2
  Bandplan #3:   Base=762.00625   Offset=+30     Spacing=12.5  BW=12.5  Slots=2

  Site: 1.40   NAC=9D0
    Channel 1-1350:   770.44375    CC
    Channel 1-1770:   773.06875        SCC
    Channel 1-1850:   773.56875        SCC
    Channel 1-1928:   774.05625        SCC
 
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