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Posted: Sat Jan 12, 2008 4:23 pm
by Mikey
I live in Illinois where's there's a statewide P25 system (
http://www.starcom21.com) that's been on-line with all of the State Police districts for a few months - It works fairly well although from my experience, a lot of the towers could use more frequencies (Pro96Com shows a lot of
queued channel grants). I have 3 996s, a 396, and a 296 and they all work well tracking the system but the 296 won't do the 700 MHz sites.
Posted: Sat Jan 12, 2008 7:26 pm
by SDnative
Mikey,
I have tried to program a 700 freq into both my 396 and 996 and the last digit (5) does not appear. Does the freq work anyway and just not show or is it not really needed?
Posted: Sun Jan 13, 2008 3:03 pm
by Mikey
Correct - Frequencies like 774.79375 will show as 774.7937 on the 396 and 996
Posted: Sun Jan 13, 2008 7:13 pm
by mike
The new rcs will be only 700 mhz p25?
Posted: Sun Jan 13, 2008 7:17 pm
by SDnative
I would think that only the Feds know for sure, and they haven't even negotiated the freq use with Mexico yet
If you look thru other states that have started using the new band, they generally have a mix of 700 & 800 freqs.
Only nobody knows for sure, and they haven't planned our use yet, I think
Posted: Sun Jan 13, 2008 7:26 pm
by mike
I wonder if the 700's are back up if they need to interop with the feds?
Posted: Wed Jan 23, 2008 7:18 pm
by OSW
mike wrote:I wonder if the 700's are back up if they need to interop with the feds?
No, each P25 Trunked site can use both 800 and 700 or one or the other just like how the channels are used now. The current technology RCS uses doesn't permit this though. Only true P25 trunked systems support 700 and 800 operation.
The 380MHz system used by Camp Pendleton is an example of a true P25 trunked system. That system could theoretically operate on 380MHz or somewhere within the 406MHz Fed/Mil band. Since the portables and mobiles support such wideband operation it makes no difference the freqs are so far away from each other.
Posted: Sun Jan 27, 2008 11:41 am
by mike
What does fire think of the digital audio quality vs the analog quality for fighting fires ive heard firefighters from other states ude digital fighting fires and I think it garbles out alot when firefighting sometimes does anyone else have an opinion?
Will the p25 system be like this one?
http://www.radioreference.com/apps/db/?sid=2594 Westmoreland County PA
Posted: Sun Jan 27, 2008 10:13 pm
by Brian
You can read that same topic in Phoenix, Arizona from 2007.
mike wrote:What does fire think of the digital audio quality vs the analog quality for fighting fires
Posted: Mon Jan 28, 2008 12:21 am
by mike