Hello Oregonians, I am visiting your state (and my former home) from Kansas. I have experience with statewide P25 systems in Nebraska, Wyoming, Colorado and Kansas as well as several local P25 systems and I hear P25 audio regularly. I was in Portland last week and was scanning Portland's Analog Motorola Type II system and it sounds like P25 audio coming from dispatchers on some of the talkgroups. The ones I really recall are Multnomah County SO Dispatch and Multnomah County/Portland Fire dispatch. I punched in the control channel for the 700 mhz P25 system and left it in Search mode but never located any talkgroups. It is possible to patch P25 audio with an analog system and I have seen it used but I can't locate the origin of the P25 audio unless they are using a conventional repeater that is then tied into the analog system. Anybody know anything about it? I will be back in Portland for a quick trip next week and will program in TriMet's P25 as well as the generic PDX P25 and see if I can get any hits in UniTrunker.
P25 traffic on Portland Trunk?
- Thread starter cinsu
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About a year ago, Portland upgraded the old 3.0 Smart Zone controller with an Astro 25 Controller. The existing simulcast analog simulcast sites, Intellirepeater sites, and Gold Elite console system plug into the new controller with a gateway box called a Smart-X converter.
Some of the new IP dispatch consoles originate as digital and get converted to analog, thus giving some traffic that "digital" sound. The 800 MHz sites and radios are all still analog.
The new 700 MHz P-25 trunked system plugs directly into the new controller as well. As far as I can tell, they have not yet started handing out radios, as so far I've only heard the Portland radio techs using the P-25 system.
- Chris
Some of the new IP dispatch consoles originate as digital and get converted to analog, thus giving some traffic that "digital" sound. The 800 MHz sites and radios are all still analog.
The new 700 MHz P-25 trunked system plugs directly into the new controller as well. As far as I can tell, they have not yet started handing out radios, as so far I've only heard the Portland radio techs using the P-25 system.
- Chris
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I've heard more testing and traffic on the TriMet system in the last month or so, but like the Portland 700, it's still not operational.
You know... I was just about to post about this... today I was on WCSO 1 and 2 for awhile and the dispatchers sounded more "digital like"...they might have done something for a bit. Doesn't sound like that anymore, but basically it sounded like their mics were just picking up their voices and none of the background noise like an analog system would normally do. So they might have been digitally processed for awhile there or something.
I lied, it does still sound that way, and it's obviously not going away. I'm actually kind of sort of maybe looking forward to P25 audio.. non encrypted of course.. in WashCo..
Yes WCCCA is in the process of updating their system core as well, so you may hear some of the same sounding audio.
- Chris
- Chris
oh ye of little faith.
[the system itself is quite operational... it's just not in routine operational use yet ]oh ye of little faith.
And I see that there is an application for an additional frequency (769.34375) at the Polivka site:
ULS Application - Trunked Public Safety 700 MHz - 0005201080 - Tri County Metropolitan Transit District of Oregon
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