Flagstaff and NAU PD New Frequencies

[APSN556]

NEW Flagstaff Radios Operational!

Well it's official. Flagstaff PD dispatch, just broadcast over the analog system for all officer's to switch to the new radios.

The TG hit I can confirm right now is that TG 8001 is the main dispatch or "west" as they call it. I am getting a Control Channel of 856.4375 and 860.2375

 

[APSN556]

Tg 8002 is the info channel where they run 27,28,29 checks.

 

[Progline]

What of the old systems? Is the NAU trunked system still there (presumably now strictly for school use?)

And, can we assume the old Flag public safety system in the database is off the air?

 

[Progline]

What of the old systems? Is the NAU trunked system still there (presumably now strictly for school use?)

And, can we assume the old Flag public safety system in the database is off the air?

Sounds like it's time to break out the PSR600 for the next trip to Flagstaff.

 

[radioprescott]

What of the old systems? Is the NAU trunked system still there (presumably now strictly for school use?)

And, can we assume the old Flag public safety system in the database is off the air?

Sounds like it's time to break out the PSR600 for the next trip to Flagstaff.

The Flagstaff analog system is indeed still pumping away on 856.7375. I did not have a chance to monitor it today to see who's on it; but there is no activity od any kind as of 1745 tonight.

I can hear only the NAU CC on 860.2375, but not strong enough for Unitrunker to decode it; I have nothing on the Flag side of the system.

Would have been nice to hear the new system like I hear the analog system.

 

[APSN556]

The Flagstaff analog system is indeed still pumping away on 856.7375. I did not have a chance to monitor it today to see who's on it; but there is no activity od any kind as of 1745 tonight.

I can hear only the NAU CC on 860.2375, but not strong enough for Unitrunker to decode it; I have nothing on the Flag side of the system.

Would have been nice to hear the new system like I hear the analog system.

The old system was put back not use last night for a few hours while the new shift's cars were being used, but other than that, it's all P25. Take note that you can still hear dispatch on the old analog system, but not officers. So it's only one way.

 

[APSN556]

PD is still going back and forth between the new and old systems. They are working out the "kinks"

One thing I am stumped about is the "events" channels. I am hearing the officer ask otherofficers to meet them on the event channel, car to car, etc and I am hearing nothing. The only 2 TG that hit on all of the frequencies are 8001 (main dispatch) 8002 (Info) and 8300 ( NAU)

Any ideas?

 

[p19997]

When you can't hear them, it may be that they are on encrypted talk groups. Police usually encrypt car-car, talk channels, and the like. I would expect them to encrypt detective and narc talkgroups as well.

 

[brianearlspilner]

Wirelessly posted (Mozilla/5.0 (Linux; U; Android 2.3.3; en-us; DROID2 GLOBAL Build/4.5.1_57_D2G-38) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1)

When you can't hear them, it may be that they are on encrypted talk groups. Police usually encrypt car-car, talk channels, and the like. I would expect them to encrypt detective and narc talkgroups as well.

If Flagstaff PD was really encrypted then you would hear alien garble. Not silence or dead air.

 

[kd7ckq]

If Flagstaff PD was really encrypted then you would hear alien garble. Not silence or dead air.

Not True. Uniden scanners will mute the audio on encrypted transmissions. My HP-1 and 996 do that. The display will even show a "ENC" during the transmission. However, my Pro-106/197 will sound all funky on digital encrypted channels. Before I sold my 396T, it would also mute on encrypted transmissions.

 

[brianearlspilner]

Wirelessly posted (Mozilla/5.0 (Linux; U; Android 2.3.3; en-us; DROID2 GLOBAL Build/4.5.1_57_D2G-38) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1)

If Flagstaff PD was really encrypted then you would hear alien garble. Not silence or dead air.

Not True. Uniden scanners will mute the audio on encrypted transmissions. My HP-1 and 996 do that. The display will even show a "ENC" during the transmission. However, my Pro-106/197 will sound all funky on digital encrypted channels. Before I sold my 396T, it would also mute on encrypted transmissions.

You may have a Uniden scanner that mutes the encryption but that has nothing to do with anything. You just said about how if you arent hearing anything then they are encrypted. Not hearing anything is not the same as hearing a encrypted alien transmission.

Second since this is a new system the previous poster before you probably hasn't found the new talkgroups or channels. Hence he probably hasn't heard anything.

 

[APSN556]

When you can't hear them, it may be that they are on encrypted talk groups. Police usually encrypt car-car, talk channels, and the like. I would expect them to encrypt detective and narc talkgroups as well.

If that's the case, wouldn't I still be able to hear the encrypted transmission, just as a garbled sound?

 

[p19997]

Your question was answered by other posts above yours. Typically, scanners "see" that the transmission is encrypted and halt audio decode. You might see your scanner stop and display on an encrypted TG but there will be no sound. On older digital scanners, you might have heard a very brief noise as the scanner started to decode audio before it "realized" the transmission was encrypted. More modern digital scanners have faster chips so they detect encryption much faster and you don't hear anything.

If you use Procom96 with your scanner to monitor the control channels, you'll see the TG's in use with encrypted ones showing as Group Encrypted.

Welcome to P25.

 

[APSN556]

Thanks guys. For the record, I'm using a pro106 (gre500) scanner with win500. I have the scanner in wildcard mode with all frequencies imputed, and hear nothing when they switch to car to car or event channels.

 

[Astrak]

Is the new Flag system a true P25 system or is it a 3600 control channel? The RS 106 and 197 will not mute encryption. You would hear something if the talkgroups were encrypted. I'd leave it set on the control channel for awhile and run PRO96COM and see if it picks up any new talkgroups.

 

[kd7ckq]

Are scanning both sites? Or just Elden? Also, just maybe EVENTS channels are conventional or Direct channels. Wont know until more listening can be done.
Something else just occured to me. Maybe Fire Station is the main site and Elden is a IR.

 

[APSN556]

I have all 24 frequencies for all 4 sites plugged in, and am scanning the old conventional system as well. Still nothing when they go to event channels or car to car. Astark has a good question. My old uniden 796d is picking up the new system loud and clear in p25 mode. I didn't think the old scanner would work.

 

[kd7ckq]

Try Programming the 796D with Fire Station only and the 106 with Elden only. The 796D is a 9600 baud P25 scanner so it should do fine. The 785D/250D are 3600 baud and will not work. Even if you have all the CC in your 106 it will lock onto the strongest signal and not want to move off of it.

 

[APSN556]

Try Programming the 796D with Fire Station only and the 106 with Elden only. The 796D is a 9600 baud P25 scanner so it should do fine. The 785D/250D are 3600 baud and will not work. Even if you have all the CC in your 106 it will lock onto the strongest signal and not want to move off of it.

Will do.

 

[APSN556]

Ok here's what I have Confirmed as of 9pm on Saturday night:

Site 1 Mount Elden:
Primary CC is 856.4375
unknown secondary CC

TG 8001 is Main Dispatch (referred to as "west")
TG 8002 is "info" where 27, 28, 29, VIN, checks are all done
TG 8004 is "event 1"

I heard an officer ask for another officer to meet him on "event" earlier tonight. The officer went to TG 8005 and tried contacting the other officer with no luck, then went to TG8004 and the officer was there waiting for him.

All coms were in the open and in P25 digital NFM 12.5khz spacing mode.

Site 2 Fire Station is either offline, or not readable from my location in central Flagstaff. My scanner finds no control channel.