163.200 Mhz P25 comms

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SOFA_KING

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Joe - What USM freqs are you hearing P25 on?

I know someone in a high position that I had casually asked how they liked their new radio system. I did not want to compromise our friendship by asking things I should not ask. That was as easy as I could put it. The response I did get referred to the new DOJ system. I left it at that. That person really did not care as they did not use the radio that much. After reading about the IWiN project in detail (more like U-Loose), I now understand the reference. That explains the dormant state on the old freqs in SE FL. So, if the old USM freqs are in use at all in this area, it would surprise me. I'm still listening though!

Read the posted OIG IWN document link off of the RR database for USM. It says what has been going on. This rift between the two big agencies has more to do with local needs and a lack of realistic plan by the OIG. DOJ has the right idea from what I'm reading. None of that trunked stuff either. HS doesn't have a clue! They are still building separate systems. IWN is a bad idea because trunking fails in places where signal is low. Loose the control channel and that would be a disaster in a critical situation! You still need simplex talkaround capability in those situations where the repeater is out of TX range, but you still want to be on the main channel...or you want to be low key on the main channels. Besides, trunked and conventional do not mix well. Hardware is still limited in that area. I do not think trunking brings people together either. Building templates that put interop channels in the channel list does. Scan works better if all channels are conventional. You get 16 channels in a zone, so structure those well with some interops in each zone. Simple! I can think of national channel plan that would work very well, but there would have to be a real agreement with all agencies and in all areas to commit to a standard. They just need a good channel plan that can be reused in different areas. It looks like the project is not meeting the demand, and HS is blowing the funds on separate old tech systems. (yet they claim they are on board :roll: ) All those dumb arguments like "the old systems are unreliable" are so far off base. It is the same nonsense you hear over and over to justify tons of money for this trunked junk. Locking yourself in your own little "trunked world" is not the answer and never will be. You just need a good channel plan that everyone can understand so they know how to use it. Sorry...back on topic...

Maybe the old freqs are still in reserve, but I hear nothing where I am. Either way, things are changing. So it is a new world in G band land. Good time to search!
 

sflmonitor

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Joe - What USM freqs are you hearing P25 on?

Unfortunately I don't have a channel plan for USM in South FL. However, I have heard some test traffic on 167.6125 which used to be their Miami repeater. I have been told by a reliable source that they have been through two upgrades (unknown which ones) in the past couple of years. I was also told that they are P25 now.
 

SOFA_KING

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Unfortunately I don't have a channel plan for USM in South FL. However, I have heard some test traffic on 167.6125 which used to be their Miami repeater. I have been told by a reliable source that they have been through two upgrades (unknown which ones) in the past couple of years. I was also told that they are P25 now.

I had that in my database with PL 136.5 a few years ago. At the time I did not know who it was. The freq and the PL didn't jive to me. Now it makes sense, but why move off the old freqs?

You need a GRE PSR-600 to nail those NACs! We could use a "good man" down there, Joe! :D
 

SOFA_KING

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I can't wait for NAC capability. Still holding out for the Uniden BCD396XT.

Ah...the new 396, eh? I thought about it, but I really like mobile units with big audio. I did not want to wait for the 996XT. I have not been unhappy with the GRE. In fact I'm very happy. It has really good custom features that make everything work better. It sounds very good. I heard one B of I transmission yesterday on 167.4875 that was the best sounding P25 transmission I have ever heard. Perfect crystal clear audio. Miles ahead of my somewhat older XTS3000. I guess there have been improvements in P25 vocoder designs. The only thing I do not like about the GRE is the front end desense issue. I'm still working on filter options for that issue. Otherwise it is a near perfect scanner.

BTW - That freq must be a wide area simalcast setup because I can get is full scale from Ft. L to Sebastian. This is the only one I have heard in a simalcast config so far.

On another note, I watched the USM on Man Hunters the other night (cool show) and noticed the heavy nextel use...almost too much Nextel use. But a couple of times I heard them on the two-way. It was P25 audio for sure. They were careful not to show the HHCM. In fact, I think they edited the footage to avoid the two-way and may have done re-shoots with the Nextels to cover the real coms. That is the way it looked to me.

Phil :cool:
 

W4KRR

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Nabbed more B of I P25 freqs today. Got the USSS NAC, and Postal Inspectors NAC (encrypted). Not too bad of a day. ;)
Phil :cool:

So Phil, what is the Postal Inspectors frequency and NAC? :confused:

All of the USSS P-25 I've heard uses an NAC of $001. Mostly encrypted, but sometimes in the clear. And what about the US Marshalls? I haven't heard anything on 163.200 in a long time. I have heard that they have migrated over to P-25 nationwide, as has the USSS.

I can hear the TSA repeater at FLL airport on 172.900 with an NAC of $001. They have a roll call every day at 1300 local time.
 

SOFA_KING

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Hi Ken,

USPS freqs heard so far:

407.7250 NAC 482 (repeater near Broward)
407.7750 NAC 482 (repeater near St. Lucie)

B of I P25 so far:

167.4875 NAC 167 (repeater everywhere)
167.7375 NAC 167 (direct in Broward)
167.7625 NAC 167 (repeater in Broward)
168.7500 NAC 167 (repeater in Broward)

TSA P25:

172.8500 NAC 293 (repeater during tropo to the south)

Check for USM here...and grab the nacs! I need to know what they are...

170.7500 (Miami federal courthouse...need the NAC!)
167.6125 (USM may have moved here)

I still listen to 163.7125 and 163.7875. I bet they still have 163.2000 in reserve. I can't believe they gave it up. I wish I lived down there again. You got "the eyeball" down there, so it is up to you. I will be down there when work takes me there, but that is not too often these days. I depend on tropo to get stuff from down there. It is almost dead up here, but sometimes a couple of mobiles simplex it up here, so you have to be searching.

Phil :cool:
 

W4KRR

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Thanks for the data, Phil!

I'm always checking for anything new in the fed bands, especially anything P-25. I have a PSR-500 so I can check for the NAC's as well.
 

SOFA_KING

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Thanks for the data, Phil!

I'm always checking for anything new in the fed bands, especially anything P-25. I have a PSR-500 so I can check for the NAC's as well.

You, Don, and I are going to have fun here in S. FL. We should be able to build a nice database. :)

Phil :cool:
 

SOFA_KING

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Jackpot!

I hit gold today...GOLD I tell ya!

Things were really buzzing around here today. I bagged a new B of I P25 freq. Mobile units going direct. All encrypted. But that was not the big catch of the day. The big surprise was a lightup on one of the old USM freqs for SE FL. (see post #11) After the B of I slowed down, I got about 10 minutes of USM mobile to mobile P25 in the same general area. Maybe doing a transport??? But this confirms use of the old freqs and I GOT THE NAC OF IT (pun intended).

USM P25 ENCRYPTED
162.7875 NAC 293

UBI NEW P25 ENCRYPTED
167.3125 NAC 167

This freq was also in use before the P25 conversion. Today I heard a bunch of testing in the clear on A3 167.4875. It was more than usual. Could they be installing the new radios in the mobiles? Sounded like it. Some of that traffic was related to the local opreration around here, although none of that was in the clear. :(

I did do manual searches at the same time as the activity to ensure I was not listening to input frequencies. Nope...the new confirmations were direct. Many cycles were done to make sure...and it caught the new ones every time. It was a very good day! :)

Phil :cool:
 
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SOFA_KING

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Add an "F". ;)

I just never like to spell that out. For years I never shared my info. Now that everything is P25 encrypted, without clarity or range loss to the users, It doesn't matter much. The bad news is we hear less "in the clear". Oh well...It is still fun to get the channels. Every agency has come out in the clear so far except USPS Inspectors, so most have a "switch".

Phil :cool:
 
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