• Effective immediately we will be deleting, without notice, any negative threads or posts that deal with the use of encryption and streaming of scanner audio.

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    If you violate these guidelines your post will be deleted without notice and an infraction will be issued. We are not against discussion of this issue. You just need to do it in the right place. For example:
    https://forums.radioreference.com/rants/224104-official-thread-live-audio-feeds-scanners-wait-encryption.html

Madison Monitorings

Joined
Jun 16, 2014
Messages
678
Location
Central, NC
#1
Hi all,

Just arrived in Madison County and have already been discovering plenty on undocumented systems and other info that I figured I would share here until I have time to get things nailed down.

1. Firstly, I discovered an 800 MHz Motorola TRS used by Boeing at the Huntsville Airport. I didn't monitor for very long, but no voice traffic was heard. Unitrunker was showing this data:

Motorola 3924
Site: 17
857.3875 (a)
858.3875 (c)

Unitrunker is showing it as an Analog only TRS. As I said Unitrunker did not detect any activity in the time I monitored

2. Secondly, even on the weekend SmartRadio DMR is quite active. Site 11 and Site 12 are both carrying hospital traffic on TGs 10054, 10059, and 10089. I believe site 12 is at the Madison Hospital and Site 11 is at the Huntsville Hospital.

Other TGs heard so far are 751, 851, 1401, 1501, 2301, 2701, 7276. I will work on IDing users.

3. Lastly, I have a DMR system on 464.100 which should be a single-frequency CAP+ system used by Madison Schools according to the FCC DB. Of course, being the weekend, there was no traffic.

I'll see what else I can find!
 
Joined
Jun 16, 2014
Messages
678
Location
Central, NC
#2
Just FYI, the Boeing TRS is in the DB, but it was reported as inactive but the CC at least is still up and running. The DB lists it as site 1, but it is reporting site 17 now.
 
Joined
Jun 16, 2014
Messages
678
Location
Central, NC
#3
Well, I have found that there is a LOT of missing/old/incomplete info in the Madison database page. I'll make DB submissions with all of this info soon, but I figured I would post it here first:

If anyone has any updates, additions, or corrections, please post!

Conventional Frequencies:

453.2875 / PL 100.0 / Madison City Schools - Buses
453.6625 / DCS 155 / U.S. Space and Rocket Center - Operations
461.0625 / PL 67.0 / Connors Steak and Seafood (Bridge Street)
461.475 / DMR TG1001 CC5 / Redstone Federal Credit Union - Security
463.2625 / DMR TG2 CC1 / Crestwood Medical Center
464.625 / DMR TG1 CC9 / Morris Elementary School
467.750 / DCS 115 / Madison Super Target Ch. 1
467.7625 / PL 103.5 / U.S. Space and Rocket Center - Ride Operations
467.775 / DCS 072 / Madison Super Target Ch. 2

Madison County Schools CAP+ system:

System Type: Motorola TRBO CAP+

464.100 / LCN 1 / CC 5
463.775 / LCN 2 / CC 5

TG 1 - District 2 Buses
TG 7 - District 1 Buses
TG 13 - District 4/5 Buses
TG 21 - District 3 Buses
TG 24 - Bus Maintenance

Van Braun Center - New LTR system:

The only LTR system's license has been terminated and has been replaced by this new LTR system. As far as I can tell, the TGs have been some or totally switched around.

LCN 1 - 460.4375
LCN 5 - 453.475
LCN 9 - 453.875
LCN 13 - 460.075

Talkgroups:

0-01-001: Operations
0-05-001: Engineering
0-09-002: Parking
0-09-003: Guest Service

Unidentified Talkgroups: 0-01-003, 0-05-002, 0-05-003, 0-09-001

Federal Trunked systems:

There are two 400 MHz Federal trunked systems on the Redstone Arsenal. One is the old Motorola system and one is a new(ish) P25 trunked system. Both sites seem to be located atop Madkin Mountain and are both almost, if not fully encrypted. I have already submitted a slight update for the Motorola system which was quickly added to the DB.

See this thread in the Federal sub-forum and scroll down a bit for full details of both Redstone systems as I do not want to cross-post: https://forums.radioreference.com/threads/federal-trunking-discoveries.388490/#post-3127197

SmartRadio DMR:

I spent a good deal of time monitoring this system as there was only one TG in the database and it is a VERY active system. Site 11 is located at Huntsville Hospital and Site 12 is located at Madison Hospital.

Business Talkgroups:

1001 - Garbage Collection
1501 - Water Heater Repair/Instillation
1701 - Transportation Service
1702 - Transportation Service
2301 - Madison County Taxi
2701 - Towing
3002 - Concrete Company
6976 - Madison County Taxi
6991 - Concrete Company
6992 - Concrete Company
6993 - Concrete Company
7001 - Concrete Company
7002 - Concrete Company
7276 - Towing
1900081 - Concrete Company
1900082 - Concrete Company
1900124 - Concrete Company

Services Talkgroups:

1551 - Huntsville Animal Control

Schools Talkgroups:

8001 - Huntsville Schools: Buses (Ch. 1)
8002 - Huntsville Schools: Buses (Ch. 2)
8003 - Huntsville Schools: Bus Maintenance

Hospital Talkgroups:

10054 - Huntsville Hospital: Anesthesia
10056 - Huntsville Hospital: Anesthesia
10058 - Huntsville Hospital: Anesthesia
10059 - Huntsville Hospital: Security
10061 - Huntsville Hospital: Maintenance
10063 - Huntsville Hospital: Maintenance
10070 - Madison Hospital: Unidentified Medical Operations
10079 - Huntsville Hospital: Call Center
10082 - Huntsville Hospital: Unidentified Medical Operations
10085 - Huntsville Hospital: Food Services
10089 - Huntsville Hospital: Emergency Room
---------------------------------------------------------------------------

Unidentified Hospital Talkgroups:

10057 - Unidentified Hospital: Anesthesia
10069 - Unidentified Hospital
10078 - Unidentified Hospital

Unidentified Business Talkgroups (with my best guesses as to TG usage):

101 - Unknown Business (Mentioned Hampton Cove)
126 - Unknown Business (traffic like "bring the chainsaw and about 60 feet of chain" "I need to hook onto this log" "excavator")
401 - Hauling/construction (traffic like "go to Vulcan an get 24 tons of #67 stones")
551 - Hauling or Concrete Company
751 - Unknown Business
851 - Unknown Business
1401 - Unknown (lots of traffic like "Bravo 26, status?" "Bravo 26, code 4")
1901 - Hauling or Construction Company
2201 - Hauling or Construction? (traffic such as "park the truck" and some talk about rocks)
3001 - Concrete Company?
4400 - Unknown Business
4851 - Unknown Business (units in various locations. Some trucks being given directions)
5251 - Unknown Business (traffic such as "come back and load up")
6353 - Hauling? (heard "that dirt is gonna be real wet")
6363 - Hauling Company?
6369 - Construction Company? (traffic like "You all can carry that dirt over to that stockpile" "got anything that needs to be graded?"
6994 - Concrete Company?
7202 - Unknown Business (traffic like "help them start hauling" "show them how to do it")
7251 - Unknown Business ("have you made it into the field?" "is there any dust coming up behind you?" "making the first pass now")
7301 - Construction? (traffic such as "I got a loader" "take it to the plant" "coming down the driveway")
7302 - Construction? (traffic about houses and moving vehicles)
7337 - Unknown Business (traffic like "want me to put these loads up here?")

That's my big info dump. Again, if anyone can help with the unknown TGs, can provide additional information, or has any corrections, please post! Thanks :)

P.S. - As far as I can tell, the Huntsville Radio Service and Airport Authority TRS systems have been shut down.
 
Last edited:

KJ4TDM

Member
Premium Subscriber
Joined
May 1, 2011
Messages
145
#4
Just bought me a BCD996P2 and have been monitoring the sites close to me and the sites that have not been ID. Site 23 is very active, sounds like concrete company and some other service. I don't know where this site is but i would guess somewhere in or around the the Birmingham area.
 
Joined
Jun 16, 2014
Messages
678
Location
Central, NC
#5
Just bought me a BCD996P2 and have been monitoring the sites close to me and the sites that have not been ID. Site 23 is very active, sounds like concrete company and some other service. I don't know where this site is but i would guess somewhere in or around the the Birmingham area.
Site 23 is one of those "bothersome" sites that only has the 454 MHz paging channels meaning they will not show up in a FCC license search. Thanks for the narrowed down location!

I have not been to the southern part of the state, but based on FCC licenses, I have site 25 as being near Auburn, site 27 as being near Thorsby, and site 30 as being near Tallassee.
 

RRR

Member
Premium Subscriber
Joined
Dec 6, 2005
Messages
1,210
#6
Question, the "Huntsville-Madison co. Airport authority" is shown to be an EDACS system. Have you monitored this system, and have any info on it?

Do you or anyone else know if they are using "ProVoice" digital?
 
Joined
Jun 16, 2014
Messages
678
Location
Central, NC
#7
Question, the "Huntsville-Madison co. Airport authority" is shown to be an EDACS system. Have you monitored this system, and have any info on it?

Do you or anyone else know if they are using "ProVoice" digital?
I heard nothing on those frequencies from the Rainbow Mountain area and I did sweeps through the 800 MHz, UHF, and VHF bands without hearing any EDACS control channels. I presume that it is now off the air. It could be that they moved to AFRN or that it is extremely low-range.

Also, the Huntsville Radio Service system is definitely off the air... It has been replaced by the very active SmartRadio DMR system mentioned above.
 
Joined
Jun 16, 2014
Messages
678
Location
Central, NC
#8
Also, if anyone is interested, here is some of the towers atop Rainbow Mountain. I took these pictures after hiking up the mountain. Users of these towers include AFRN and Madison City Schools.

845AC827-4881-4951-A5B8-D31C04ADC646.JPG IMG_8327.jpg

And this is the AFRN site on Monte Sano Mountain:

IMG_8261.jpg
 

RRR

Member
Premium Subscriber
Joined
Dec 6, 2005
Messages
1,210
#10
Thank you for that!

Do you have any TG's for specifically the Huntsville Airport authority? (IE, Intermodal, etc.)
 
Joined
Nov 28, 2005
Messages
391
Location
Somerville, AL
#11
I don't think Intermodal moved to the P-25 system but not sure where they went. Public Safety and Operations are on the P-25 but they are 100% encrypted.
 
Joined
Jun 16, 2014
Messages
678
Location
Central, NC
#12
I don't think Intermodal moved to the P-25 system but not sure where they went. Public Safety and Operations are on the P-25 but they are 100% encrypted.
They used to be on 460.375 but that license is expired. They may be on P25 but encrypted. I also have a few unknown talkgroups I picked up on AFRN that were in the clear that I have yet to go through and ID by listening to my recordings... it could be one of them.
 
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