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  #541 (permalink)  
Old 04-04-2014, 11:57 AM
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Quote:
Originally Posted by W4UVV View Post

1. Am I correct in assuming all TACN trs are "P25 Standard" and not "Motorola"?
P25 is P25, doesn't matter if the radio was made by Motorola or not. http://wiki.radioreference.com/index..._Air_Interface
TACN system is 'common air interface exclusive' meaning all transmissions will be digital. Currently that is FDMA but will eventually be TDMA.
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Originally Posted by W4UVV View Post
2. Are the TACN frequencies and talkgroups listed in the RR database mostly correct or will I have to wade through 27 pages of RR postings and pick out the latest site info, frequencies, talkgroups findings individuals have monitored like I did with the VA STARS system's sites?
The database is really accurate.
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Originally Posted by W4UVV View Post
3. What are other recommended talkgroups, excluding those unique to each district, THP statewide TG 47046 and the various Mutual Aid talkgroups, should I program for my TACNS?
Systemwide Interop and Mutual Aid, and TEMA talkgroups will be just about it for upper east TN on the TACN
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Originally Posted by W4UVV View Post
4. Are there district unique or statewide Game Warden and Forestry Dept. TACN talkgroups? I saw only a Wildlife Resources Agency for Region 3 and East listed.
Not yet for upper east TN
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Originally Posted by W4UVV View Post
5. For talkgroup 47019 Kingsport Dist. 5 Dispatch encrypted and other TACN similar talkgroups, is it 100% encrypted or occasionally encrypted? If 100% then I will not program it.
They are not encrypted yet, they will wait until the build is complete before doing so, from what I have read.
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  #542 (permalink)  
Old 04-04-2014, 12:06 PM
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Thanks for your TACN responses. I do not agree that "P25" is always "P25". There is the APCO P25 "Pure" standard and the Motorola P25 unique. Butel software recognizes these differences and offers both choices.

John
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  #543 (permalink)  
Old 04-04-2014, 8:06 PM
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Danny pretty much nailed it, but I'll throw a couple of other observations in that may help you out.

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Originally Posted by W4UVV View Post
4. Are there district unique or statewide Game Warden and Forestry Dept. TACN talkgroups? I saw only a Wildlife Resources Agency for Region 3 and East listed.
The TWRA TACN TGID's are not used as much as the conventional vhf P25 frequencies, even in Region 3. I usually hear much more traffic on the vhf frequencies than I do on the TACN. And TN Forestry is still on their vhf conventional frequencies.

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5. For talkgroup 47019 Kingsport Dist. 5 Dispatch encrypted and other TACN similar talkgroups, is it 100% encrypted or occasionally encrypted? If 100% then I will not program it.
In District 1 (Knoxville) & Distict 2 (Chattanooga) The Dispatch 1 TGID is unencrypted full time. Every time I have heard the Dispatch 2 or either Ops TGID's on either district I have always heard it encrypted full time. The Dispatch 1 TGID for Dist 5 (Fall Branch) has always been unencrypted and I hear quite a bit of traffic on it when I travel to Johnson City fairly often. I have never heard any of the other District 5 THP TGID's so I can't comment on your specific question about 47019 being encrypted full time.

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Originally Posted by W4UVV View Post
I do not agree that "P25" is always "P25". There is the APCO P25 "Pure" standard and the Motorola P25 unique. Butel software recognizes these differences and offers both choices.
I always program my systems as standard P25 using Butel and have no problems with them.

And as far as the mutual aid & other statewide TGID's I have them programmed in but rarely hear anything on them. But I'm of the mindset, "you never know," so I leave them in.
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Old 04-05-2014, 8:06 AM
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As Danny pointed out, the APCO Project 25 Common Air Interface is not specific to any one Vendor. It is an open set of protocols. What you and apparently Butel refer to as "pure P25" for trunking is the P25 CAI applied on an 9600 baud rate all digital system. The "Motorola P25" is actually very misleading. It is actually referring to the usage of the P25 CAI on an Motorola "Legacy" ASTRO waveform Smart Zone/Smartnet system using an 3600 baud rate "mixed mode" system. Not to mention in just a couple of years, these systems will no longer be supported by Motorola, and thus must either upgrade to an P25 format from another Vendor, go ASTRO-25 by Motorola, or if they wish to remain on the Smart Zone format go to EFJ/Kenwood who will be offering updates/support for those type systems. Now the next question would be: "What would you and Butel classify conventional systems using the P25 CAI?"

The TACN is primarily an Motorola ASTRO-25 system, but the original backbone TVRRS is another Vendor, and some portions will be Harris conversions, as well as the full ability to use any Vendor's P25 subscriber units. So yes, P25 is P25 is P25, whether it be Conventional, Phase I Trunked, Phase II Trunked, applied to an Smart Zone/Smartnet, P25ip... Still P25.
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Last edited by milf; 04-05-2014 at 8:12 AM..
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  #545 (permalink)  
Old 04-05-2014, 9:54 AM
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Dave,
Thanks much for your TACN comments. Looks like I have create a conventional file for the Game Wardens and Forestry. FYI my son lives on the north side of Rye Patch Hill which is the second highest elevation in the Bristol area near I81 exit 3. Near the hilltop last summer we installed a rotatable 2 meter beam, 440 mhz. stacked arrays and a mast mounted RF pre-amp on a Scantenna. His ground wave reception is great. By the end of this year or before he will have a Phase II scanner.

John
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  #546 (permalink)  
Old 04-07-2014, 3:48 PM
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I haven't heard anything from Hinch for over a week on 152.5050. Now and then the scanner stops there, but I think it might be a squelch setting hiccup.

Now & then 152.7750 throws out an i.d.er.

What's changed?

kf4br
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  #547 (permalink)  
Old 04-09-2014, 4:09 PM
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152.7750 became alive today with voice traffic from Dist. 2

kf4br
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  #548 (permalink)  
Old 04-13-2014, 5:37 PM
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Part of the TACN was hit by vandals earlier this week.


Blount Co., TN: Vandals rock Sheriff’s Office radio equipment
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  #549 (permalink)  
Old 04-18-2014, 2:01 PM
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Why can I not pick up 152.7750 on my conventional scanner, absolutely nothing, and I am about 2 miles line of site from Oswald Dome, Polk Co in Dist. 2.
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  #550 (permalink)  
Old 04-18-2014, 7:11 PM
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152.7750 is fro m the Hinch Mt site in Cumberland County
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  #551 (permalink)  
Old 04-20-2014, 8:21 AM
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running uniturnker on the Tiger Hill site..... picking up a unknown in the peers list 02-33 CC 771.25625 this isnt listed in the database at all


looking at the FCC data its Altamont in Grundy County. i finaley nailed down the site.
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Last edited by slatescan; 04-20-2014 at 8:27 AM..
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  #552 (permalink)  
Old 04-30-2014, 7:41 AM
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This information has been helpful, but i need clarification on which mobile scanner will pick up this system the best. BCD536hp?
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  #553 (permalink)  
Old 04-30-2014, 10:19 AM
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Quote:
Originally Posted by mmutk View Post
This information has been helpful, but i need clarification on which mobile scanner will pick up this system the best. BCD536hp?
One good choice but most any digital mobile scanner will do fine until they start using TDMA, then it is limited to the 536 until Whistler introduces their scanner line.
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  #554 (permalink)  
Old 05-04-2014, 7:23 PM
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New Site license:

SY WQTX762
TENNESSEE DEPARTMENT OF CORRECTION
[PUBLIC SAFETY COMMUNICATIONS]
Control Point 1 - 480 GREEN CHAPEL ROAD, HENNING TN 731-738-5044
(link)
05/01/2014 License Issued
1 - LAUDERDALE COUNTY, WEST TN STATE PRISON, HWY 87 6.5 MILES WEST OF, HENNING (LAUDERDALE) TN [Structure: Guyed] (map)
[Antenna 1 - HTT: 91.0m Beamwidth: 360.0° Gain: 9.0dBi Azimuth: 360.0° HAAT: 97.9m]
772.15625 FB2 Ant: 1 100p 200e Units: 1 8K10F1D 8K10F1E 9K80D7W
772.43125 FB2 Ant: 1 100p 200e Units: 1 8K10F1D 8K10F1E 9K80D7W
772.90625 FB2 Ant: 1 100p 200e Units: 1 8K10F1D 8K10F1E 9K80D7W
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  #555 (permalink)  
Old 05-23-2014, 5:30 PM
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Default Cumberland & Putnam Counties

I don't know if it is because of the holiday weekend or not, but I've heard traffic on stops/incidents on I-40 and 127 North in Cumberland County and as far West as Baxter in Putnam County.

These are all off of the Hinch Mountain site.

kf4br
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  #556 (permalink)  
Old 06-03-2014, 2:46 PM
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Trying to make a decision about a scanner I feel we are all at the mercy of whoever flips the encryption switch. I feel our days are numbered as scanner listeners. Frustrated.
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  #557 (permalink)  
Old 06-04-2014, 8:14 PM
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http://www.theleafchronicle.com/arti...edium=facebook


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  #558 (permalink)  
Old 06-04-2014, 8:34 PM
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OK,.. time for folks all around Clarkesville to look for the P25 CC's.. and nab new ID's.
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Old 06-04-2014, 10:24 PM
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Still doesn't say what type system. Do we know it is P-25? They never mention interoperability. Or encryption.
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  #560 (permalink)  
Old 06-05-2014, 8:30 AM
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The City of Clarksville Tennessee activates new public safety radio system » Clarksville, TN Online


"The new radio system is a 800mhz Motorola APCO project 25 phase 2, TDMA and FDMA system; composed of 3 sites and 8 channels. It is also tied into the State of Tennessee Homeland Security radio system in Nashville"

I would also like to quote this "For scanner buffs there will be one major disappointment from the new system, and that is that it is reportedly encrypted from end-to-end. This was for the safety of the first responders using the radio system according to the city."
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