RadioReference on Facebook   RadioReference on Twitter   RadioReference Blog
 

Go Back   The RadioReference.com Forums > U.S. Regional Radio Discussion Forums > Arizona Radio Discussion Forum


Arizona Radio Discussion Forum - Forum for discussing Radio Information in the State of Arizona.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 05-09-2017, 11:08 PM
Member
   
Join Date: Aug 2009
Location: Bryn-Mawr/Skyway Area
Posts: 344
Default PHX Fire

Any idea when they (and other suburban fire services) will go digital full time (I.e. hazard calls as well)?
Reply With Quote
Sponsored links
  #2 (permalink)  
Old 05-09-2017, 11:22 PM
rwier's Avatar
Member
  Premium Subscriber
Premium Subscriber
 
Join Date: Nov 2006
Location: Phoenix, AZ
Posts: 1,793
Default

Quote:
Originally Posted by scannerizer View Post
Any idea when they (and other suburban fire services) will go digital full time (I.e. hazard calls as well)?
I would be shocked if building interior fire communications ever went digital, unless some breakthrough in digital dependability occurs. I think if digital could be improved, it would have happened a while back. Analogue is not only dependable, but has a relative short range, thus keeping building interior communications "in the family", so to speak.

Caveat: I make the above statement having no personal knowledge of radio electronics, but am relying on "conventional wisdom" (which I usually laugh at) and 55 years of listening to 154.190, lol.
__________________
Rob, Phoenix, AZ since '40
996T, 396XT, 996XT, HP-1E (x3), 436HP, 536HP, 500, 600, and 800 (x2)
Reply With Quote
  #3 (permalink)  
Old 05-09-2017, 11:24 PM
cellphone's Avatar
Member
  RadioReference Database Admininstrator
Database Admin
Amateur Radio Operator
Amateur Radio
 
Join Date: Dec 2002
Location: Ahwatukee, AZ (Phoenix)
Posts: 1,200
Default PHX Fire

Not any time soon. Phoenix Fire did testing a few years back and analog was proven to provide better audio clarity in most situations especially in "hazard" situations that require use of an SCBA. 700/800mhz analog was proven to work the best, but as Phoenix already had an extensive VHF receiver infrastructure in place, they chose to enhance the VHF system rather than start from scratch with a 700/800mhz analog system for fire.

The full report can be found here:
https://blog.tcomeng.com/wp-content/...adioreport.pdf

Even though this was done in 2004, there has not been a major change in digital communications as it is still P25 for most Public Safety. Now with P25 Phase 2, audio quality is slightly worse at the gain of better spectrum efficiency. Until there is a major advancement in digital, it seems analog is here to stay at least in Phoenix. Mesa is now even moving back to a VHF analog system for fire after being digital for many years.

Last edited by cellphone; 05-09-2017 at 11:34 PM..
Reply With Quote
  #4 (permalink)  
Old 05-10-2017, 6:59 AM
DanRollman's Avatar
Member
  RadioReference Database Admininstrator
Database Admin
Amateur Radio Operator
Amateur Radio
 
Join Date: Dec 2002
Location: Atlanta, GA
Posts: 550
Default

Quote:
Originally Posted by scannerizer View Post
Any idea when they (and other suburban fire services) will go digital full time (I.e. hazard calls as well)?
In Phoenix, that transition is currently scheduled for January 1, 20-never.
Reply With Quote
  #5 (permalink)  
Old 05-10-2017, 12:09 PM
Member
   
Join Date: Aug 2009
Location: Bryn-Mawr/Skyway Area
Posts: 344
Default

Quote:
Originally Posted by DanRollman View Post
In Phoenix, that transition is currently scheduled for January 1, 20-never.
LOL on their website it says (and I quote) "Once we implement the system for non-hazard calls, we will begin the process of transitioning to the troubled system for all operations."

Also I believe all FDs have the new APX radios. The Phoenix site hasn't been updated in years.
Reply With Quote
Sponsored links
  #6 (permalink)  
Old 05-17-2017, 6:53 PM
cellphone's Avatar
Member
  RadioReference Database Admininstrator
Database Admin
Amateur Radio Operator
Amateur Radio
 
Join Date: Dec 2002
Location: Ahwatukee, AZ (Phoenix)
Posts: 1,200
Default

Here is what Phoenix Fire thought about the transition to the RWC (when it was 800mhz in the past).

https://youtu.be/OW_l9ISzXzY
Reply With Quote
  #7 (permalink)  
Old 05-17-2017, 8:37 PM
Member
   
Join Date: Aug 2009
Location: Bryn-Mawr/Skyway Area
Posts: 344
Default

Quote:
Originally Posted by cellphone View Post
Here is what Phoenix Fire thought about the transition to the RWC (when it was 800mhz in the past).

https://youtu.be/OW_l9ISzXzY
LOL this was that parody. I was hoping you had the link to their video they had up for a while while the transition was going on.
Reply With Quote
  #8 (permalink)  
Old 05-22-2017, 7:01 PM
KR7CQ's Avatar
Member
  Shack Photos
Shack photos
Amateur Radio Operator
Amateur Radio
 
Join Date: May 2013
Location: Phoenix
Posts: 167
Default

From what I understand FFD has no interest in using the RWC system for fire ground work.
Reply With Quote
  #9 (permalink)  
Old 06-16-2017, 7:50 PM
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Dec 2002
Location: Portsmouth, VA
Posts: 263
Default

I do have a question concerning the VHF patches on the RWC system. I notice that the A2-A13 VHF patches on the RWS system are encrypted. Does this mean the VHF A2-A13 are encrypted as well. I don't live there but may travel on occasion and don't need to input them if they are. Thanks in advance.

Eugene KG4AVE
Reply With Quote
  #10 (permalink)  
Old 06-16-2017, 9:08 PM
cellphone's Avatar
Member
  RadioReference Database Admininstrator
Database Admin
Amateur Radio Operator
Amateur Radio
 
Join Date: Dec 2002
Location: Ahwatukee, AZ (Phoenix)
Posts: 1,200
Default PHX Fire

The VHF frequencies are analog in the clear. The entire VHF system is simplex with mountain top base stations for the alarm room, and dozens of receive only sites around the valley. No repeaters means you will need to be within 1-2 miles of a mobile to hear them. You will only hear the base stations unless you are very close to the incident.

The patches on the RWC trunked system are encrypted. These would be nice to hear as they transmit what the alarm room hears with all of the receive sites. Don't bother programming these talkgroups.
Reply With Quote
  #11 (permalink)  
Old 06-17-2017, 3:11 PM
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Dec 2002
Location: Portsmouth, VA
Posts: 263
Default

Thanks......makes one wonder why analog in the clear and patches are encrypted. I know this dead horse is still being flogged but come on......fireground channels.....oh well.....

Eugene KG4AVE
Reply With Quote
  #12 (permalink)  
Old 06-19-2017, 9:07 PM
Member
   
Join Date: Sep 2009
Location: In the Winnie
Posts: 73
Default

Quote:
Originally Posted by Eugene View Post
Thanks......makes one wonder why analog in the clear and patches are encrypted. I know this dead horse is still being flogged but come on......fireground channels.....oh well.....

Eugene KG4AVE
I've tried to figure that out for ages, makes zero sense other than "because they can" .. so to be clear, I can be a block away from a fire and listen to VHF analog in the clear but the same traffic is encrypted when trunked .. WTF! What recently graduated MBA did they leave in charge to make that decision!
Reply With Quote
  #13 (permalink)  
Old 06-20-2017, 5:13 PM
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Dec 2002
Location: Portsmouth, VA
Posts: 263
Default

MBA........doubtful. Never underestimate the power of paranoia. So I will load analog and hope they haven't figured it out.

Eugene KG4AVE
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 9:49 AM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
All information here is Copyright 2012 by RadioReference.com LLC and Lindsay C. Blanton III.Ad Management by RedTyger
Copyright 2015 by RadioReference.com LLC Privacy Policy  |  Terms and Conditions