Stockton Fire 453.275 "Control 1"

[russianspd]

I don't know if this is official or not but as of 22:05 on 9/12 I am hearing both Dispatch and the Engines on 453.275 calling it Control 1. Per the database this is Stockton Fire's only P25 channel that is listed.

 

[KD6RRR]

Yay thank you for the info! I sat and listened to both the previous Control 1 (460.625) & Control 2 (460.575) freqs today for a few hours trying to catch any P25 traffic and heard no voice traffic at all on either one. 460.625 had an occasional P25 transmission that would display "P25" as well as "LNK" on my scanner's screen, but nothing was heard. 460.575 had a continuous carrier on it with a regular data burst sound ('chirp chirp chirp chirp') like it was a data link, but nothing I could decode with the scanner.

Wonder if they will now transition these 'old' frequencies to P25 now, if they will stay analog and become renumbered tac channels, if they will stop being used altogether after all these years, or some other plan?

Thanks again for the report!

 

[russianspd]

Can you confirm hearing Control 1 on 453.275 P25?? I got data bursts on 460.600 consistently. And 460.575 is still analog and is used as Control 2 and TAC for fires, one was dispatch about 20:30 for an abandoned residence with smoke. And 460.625 is still just giving up a data link coding.

 

[KD6RRR]

Yes sir, I'm hearing the historically 'normal' Control 1 type traffic on that frequency that has been listed as Control 5 in the DB. Ha, and just now I hear a dispatcher comment that she's experiencing radio problems and asked an engine company that was returning to quarters from a call to listen to her give a five count over the air. I don't think I've heard a fire agency using P25 before now. It will be interesting to see how it goes.

 

[wskrayen]

Well, listening to a structure box today (9/14 @1545) and control 2 is P25. My BCT15 wasn't picking it up, only my BCD396T, and it was displaying P25.

 

[kma371]

Well, listening to a structure box today (9/14 @1545) and control 2 is P25. My BCT15 wasn't picking it up, only my BCD396T, and it was displaying P25.

Freq?

 

[wskrayen]

Sorry, the freq would be useful wouldn't it? Same Freq as the old control 2 - 460.575. Also they are definitely dispatching on 453.275

 

[russianspd]

KMA, on the San Joaquin County page you need to change the control 1 P25 from 460.625 to 453.275.

 

[eccradiotec]

Eq. Needed for new P-25 system Stockto City Fire Monitoring

It looks apparent that monitoring the old Control 1 Dispatch as well as Tacs 2&3 are not going to work on the old analog radios.

Is there any way to monitor this dispatch and Tac frequencies with present day scanners like the 996 or GRE Digital line? Or did the dept set up a DES type encrypted key and we are locked out to monitoring fires in Stockton City?

Question 2:

Is San Joaquin County Fire going to follow and be encrypted as well? Very seldom does fire go encrypted as much as law enforcement has in the past after a P-25 system is installed.

Thank You,

Steve

 

[kma371]

Other people are monitoring these just fine. These are P25 modulation, no encryption.

It's very unlikely they will use any type of encryption now or in the future.

 

[russianspd]

Eccradiotec,
If you have a scanner that is capable of monitoring digital transmissions (P25) you should have no issues listening to Stockton Fire. Right now from what I have gathered 453.275 is the new Control 1 with P25. 460.575 is tac one which is still used as the main tactical channel for fire or other events. I would lean in the direction that the channel is also currently P25 but will need to confirm for myself whether it has changed from analog, even though KMA has already updated the NAC channels. All other freqs, 460.600 and 460.550 are pretty much just general talk around groups unless there is multiple incidents, the need for an additional tac channel or some sort of training exercise.

453.275 and 460.575 are pretty much all you need.

And if you're having trouble with getting any of the transmissions across I would venture to say you might not have a P25 capable scanner if the transmissions seems to be "garbled or encrypted".

Hope that helps out somewhat.

 

[eccradiotec]

Stockton Digital

Thank You for the response:

Do you know if San Joaquin will be going to P-25 soon as well?

Sorry what is KMA?

Steve

 

[russianspd]

I don't know about San Joaquin County Fire services. By looking at the county homepage it shows that the Tac channels and Command 5 is a DPL tone, so i'm guessing that allows both analog and digital radios to work on that frequency. It's possible and likely they will switch down the road in my opinion.

By KMA I was abbreviating the user KMA371 who is mainly the person who updates the database information for San Joaquin County. I'm sure he'll be able to provide you with more information than I about San Joaquin County Fire switching to P25.

 

[kma371]

There are ZERO plans for fire services at the county level to switch to P25.

It is VERY unlikely it will ever switch.

 

[russianspd]

Is that due in that they cover a larger and more rural area unlike urban departments who cover a centralized area?

 

[WayneH]

They really jacked up the naming with the new P25 channels. I wanted to get the new NAC's in the DB that I confirmed but come to find out the original names were not carried over.

 

[kma371]

Is that due in that they cover a larger and more rural area unlike urban departments who cover a centralized area?

No at all. The sheriffs department uses P25 and it covers 1400 sq miles. Whereas stockton is only 65 sq miles.

Digital is just another form of modulation. It doesn't improve or degrade coverage as far as I know

 

[russianspd]

Thanks for the info.

 

[eccradiotec]

Stocktn City Digital

Since the system is not trunked , using a Astro or late model P-25 commercial radio wont cause any system problems with the field units and administrators, is there a good economical commercial radio that will work well for Stockton City Fire Monitoring. Are they ever going to go encrypted........?

 

[KD6RRR]

Hey Chris, check your RR inbox for a PM.