California Radio Interoperable System (CRIS)

[vince48]

(still on "site 2") I saw a couple of register events for subscriber 21 / group 131, at 05:14 and 05:49 PDT. I didn't see any channel grants.

interesting, i monitor all day today and see if anything else pops up. wonder what is and who is group 131

 

[norcalscan]

So is this "system" actually replacing the CSERS/OES (?153.755?) VHF/microwave linked spider web system which I think was originally designed as a literal almost statewide phone patch system?

CRIS is meant and designed to not replace a single thing, but to supplement and support a number of existing resources and entities, and provide solutions that were not feasible before. From a hobbyist's perspective, the only thing I see so far that would be closest to getting "absorbed" is the CMARS users.

CESRS is a much higher-resolution system across the state, reaching far deeper than CRIS for at least 5+ years. However I can see some non-fire travel-net traffic on CESRS easily finding itself on CRIS where available. The thing with CRIS, it provides a very large new toolbox to the supporting roles of a typical CalOES communications mission. Compared to the single slotted and Phillips screwdrivers, a generic claw hammer, and a set of pliers available for a mission, CRIS is like the Snap-On truck arriving and parked outside your job. That tried and true tested hammer will still get most of the job done, but now I have access to a 4 1/2" Angle Die Grinder with variable speed paddle trigger. CRIS runs on the same microwave system as CESRS. The linking of CESRS is rare now and is more done today for practice and testing than actual missions. But should there be a widespread phone/data outage with a disaster tomorrow, you can count on CESRS linking being that trusted claw hammer CalOES pulls to make that crucial logistical link between incident and Sacramento and/or EOC's.

 

[vince48]

ok, got some voice comms @ 2:45

Group 131 - RID 253 to RID 21

the call lasted about 45 seconds. Sounds like these are system tech's, I did hear RID 253 say he will be down in Madera about noon. I got the recorder on and see if anymore action this evening and tomorrow.

Also new channels on this system
3-1932 - 774.08125 - 1
3-1933 - 774.08125 - 2

 

[scannerboy02]

ok, got some voice comms @ 2:45

Group 131 - RID 253 to RID 21

the call lasted about 45 seconds. Sounds like these are system tech's, I did hear RID 253 say he will be down in Madera about noon. I got the recorder on and see if anymore action this evening and tomorrow.

Also new channels on this system
3-1932 - 774.08125 - 1
3-1933 - 774.08125 - 2

So the system is Phase II TDMA.

 

[norcalscan]

So the system is Phase II TDMA.

I believe it is a hybrid where some channels are Phase 1 and others are 2, and when it gets busy enough the system will prioritize on phase 2 for more efficient resource utilization.

 

[KG7PBS]

ok, got some voice comms @ 2:45

Group 131 - RID 253 to RID 21

the call lasted about 45 seconds. Sounds like these are system tech's, I did hear RID 253 say he will be down in Madera about noon. I got the recorder on and see if anymore action this evening and tomorrow.

Also new channels on this system
3-1932 - 774.08125 - 1
3-1933 - 774.08125 - 2

Just asking is Group 131 in Hex or Dec thanks

 

[vince48]

DEC

 

[KG7PBS]

DEC

Thanks

 

[norcalscan]

Looks like Site 11 came online - South Fork Mtn I presume. Making a note here but not submitting until I confirm both 10 Tuscan Buttes and 11 South Fork.

BEE00-9D2 01-011
769.90625 CC
770.69375
770.46875
770.16875

 

[scannerboy02]

I believe it is a hybrid where some channels are Phase 1 and others are 2, and when it gets busy enough the system will prioritize on phase 2 for more efficient resource utilization.

To be clear, if the system is capable of TDMA it IS a Phase II system. Most Phase II systems have Dynamic Dual Mode (Motorola term) capability to fallback to FDMA "Phase I" in the event a FDMA only radio affiliates to a talk group.

I have never heard of a radio system that adjusts itself between TDMA and FDMA based on the volume of radio traffic. It's TDMA until a FDMA radio affiliates to a talk group and even then it only operates FDMA on the traffic channel assigned to the specific talk group. The control channel is always FDMA.

 

[scannerboy02]

I have created a Google Map of the system with the sites that are on line and/or proposed.

Sign in - Google Accounts

 

[ScannerDude244]

I have created a Google Map of the system with the sites that are on line and/or proposed.

Sign in - Google Accounts

Wow nice work man!

 

[ECPD279]

Site 15 is now up.

773.05625 1-1768
773.29375 1-1806
773.58125 1-1852
773.80625 1-1888

No neighbors yet.

Strong enough to decode from the back (northeast) side of the hill in El Cerrito, indicating north bay or east of. Not audible in Martinez.

 

[LAflyer]

I have updated the Db based on comments here.

As a reminder however, kindly also submit findings directly to the Db as well. No guarantee that a Db Admin will read forum postings.

Thanks

 

[scannerboy02]

Looking at the database it appears that 30 channels have been identified so far. I had seen some documentation that they were going to use 24 channels from the state's 700 MHz allocation, I'm guessing (understandingly) they realized they would need more than 24 channels.

I also noticed they are using channels that had already been allocated to other radio systems like the CHP VRS and LMR system.
769.96875 is used at CRIS site 2 and 6 as well as CHP VRS16 -----> CH25?
773.29375 is used at CRIS site 15 as well as 7CHP05 -----> CH26?
773.58125 is used at CRIS site 15 as well as 7CHP07 -----> CH27?
773.80625 is used at CIRS site 15 as well as 7CHP09 -----> CH28?
774.08125 is used at CRIS site 2 as well as 7CHP12 -----> CH29?
774.78125 is used at CRIS site 2 as well as 7CHP BB (Bay Bridge) and 7CHP HQ (Headquarters) -----> CH30?
And this is just the sites that have been discovered so far.

Is the plan to have the CRIS system replace the CHP LMR system, being they are reusing several "7CHP" channels?

 

[scannerboy02]

Is anyone aware of any testing being done looking at interference between 700 MHz mobile radios and 700 MHz VRS radios?

I know when Ohio MARCS added 700 MHz channels to the system they had issues with the 700 MHz VRS the highway patrol was using and had to move the VRS to UHF channels.

 

[mike619]

Does Tulare county plan to move to this system?

 

[PrivatelyJeff]

Does Tulare county plan to move to this system?

Don’t think any county is. It’s designed for state agencies that don’t have their own system to use, at least for now. Plus since they interact with neighboring agencies so much, they would have to either have multiple radios in everything or radios with multiple bands and most agencies around here are too broke to do that.

 

[KG7PBS]

Don’t think any county is. It’s designed for state agencies that don’t have their own system to use, at least for now. Plus since they interact with neighboring agencies so much, they would have to either have multiple radios in everything or radios with multiple bands and most agencies around here are too broke to do that.

Unless they want to go over to the Dark side and Buy Harris and get the XL-200P. Harris will sell that guy on the Cheap I hear.

 

[mcjones2013]

Heard a radio check today around 3:10 p.m. on TG 438, RID 8210, non-encrypted, listening to Site 7 (Sac Resources Bldg). Nothing else after the initial radio check.