Using ProCom96 on 770.95625, I am seeing "Forced Affiliation" for several DNCR (138xxxx) and PGC (123xxxx) UIDs. Does not appear to be any voice traffic and I do not know what Forced Affiliation actually means??
- Joined
- May 19, 2017
- Messages
- 608
I'm hearing what sounds like data on 40086. Sometimes it's silent, other times it sounds like data or horses galloping. Is it even possible to have MDT data on a P25 Talkgroup?
No, data does not use talkgroups. Data on an ASTRO 25 system comes across the traffic channels in FDMA mode, while all of the talkgroups on STARNet are provisioned for TDMA only.
The "galloping horses" sound is known to occur with TDMA voice under certain conditions. A few years ago I determined that a bad speaker mic cable was allowing some RF into the audio path, producing the "galloping" sound whenever the radio was keyed up. I've also heard the same noise with base radios when the RF gets back into the power or audio path. When a radio is transmitting on a TDMA talkgroup, the radio's amplifier is keying and de-keying every 50ms, thus producing the rhythmic "galloping" noise as the radio rapidly keys and de-keys.
I suspect what you're hearing is someone keying up without speaking, and so all you're hearing is the TDMA RF noise coming across.
The "galloping horses" sound is known to occur with TDMA voice under certain conditions. A few years ago I determined that a bad speaker mic cable was allowing some RF into the audio path, producing the "galloping" sound whenever the radio was keyed up. I've also heard the same noise with base radios when the RF gets back into the power or audio path. When a radio is transmitting on a TDMA talkgroup, the radio's amplifier is keying and de-keying every 50ms, thus producing the rhythmic "galloping" noise as the radio rapidly keys and de-keys.
I suspect what you're hearing is someone keying up without speaking, and so all you're hearing is the TDMA RF noise coming across.
I'm not a Pro96Com user but in context it probably is just the system requesting that a radio re-affiliate after seeing no activity or de-affiliation after a period of time. It's normal.
I still have a signal from the Berks a/g phase 1 system this am.
Does anyone have any ideas where sites 142 143 145 are located at?
1.142-NAC ? BLAI02 700 Martinsburg/Blair WPTZ795
40 17'35.00 -78 15'38.00
1.143-NAC ? PERR01 700 Blain/Perry WPTZ795
40 21'31.28 -77 32'48.98
1.145-NAC ? VENA08 700 Rocky Grove/Venango WPTZ795
41 24'03.00 -79 49'11.00
YORK01 700 has switched...
1.138-NAC 943 YORK01 700 Reeser's Summit/York WPTZ795
40 11'30.98 -76 52'01.99
773.03125 CC
773.78125 SCC
774.55625
Didn't get a neighbor list, Didn't have the tools at hand. It was late... Another day..
Also, If you have the right Uniden scanner you can see the correct site info. There were comments indicating otherwise earlier in this thread.
😒
Last edited:
I never said that "ALL Uniden scanners" have trouble displaying the correct site info, I specifically said the Uniden DMA scanners can't display site IDs over 100. It's commonly understood that the DMA models are the pre "HP" based model. But you already knew that, so I'm not sure why you felt the need to make that comment.Also, If you have the right Uniden scanner you can see the correct site info. There were comments indicating otherwise earlier in this thread.
DMA = T, XT, P2
HP = HP-1/2, x36HP, SDS
That's not exactly what was said..
wiki.radioreference.com
We'll go ahead and split that hair..
HP = HP-1/2, x36HP, SDS scanners use the same DMA architecture. (Just have much more of it)
Dynamic Memory Architecture - The RadioReference Wiki
HP = HP-1/2, x36HP, SDS scanners use the same DMA architecture. (Just have much more of it)
I'm not playing a game, When somebody reads that post they may construe the statement as a blanket comment about all Uniden scanners. If it hit me that way, It likely struck/will strike others the same when they read it.
But we know what's really going on here.. Don't We..
But we know what's really going on here.. Don't We..
- Joined
- May 19, 2017
- Messages
- 608
10219 PSP Motorcade Detail? Biden enroute to Pittsburgh, tons of action on 10216, 10219 and Troop B Tac 1.
Yup, we know exactly what's going on here...Brent being Brent, same tired old routine for years! Are you going to write another blurb on your wiki page crying about me being mean to you again?I'm not playing a game, When somebody reads that post they may construe the statement as a blanket comment about all Uniden scanners. If it hit me that way, It likely struck/will strike others the same when they read it.
But we know what's really going on here.. Don't We..
Anyway, on to things that actually matter!
Yep, That's exactly what I see.. It's what everybody else sees too..
Last edited:
Let's play nice gentlemen.
N3BGA
Member
Observations from SDRTrunk this evening from a mountaintop in Franklin County.
Reesers Summit 700 AG (YORK01)
Site Number: 138 (decimal)
NAC: 943 (hex)
Primary: 773.03125
Secondary: 773.78125
Site Neighbors: 1.137, 1.142, 1.143
Martinsburg 700 AG (BLAI02)
Site Number: 142 (decimal)
NAC: 948 (hex)
Primary: 769.15625
Secondary: 769.70625
Site Neighbors: 1.138, 1.143, 1.144, 1.145, 1.146
Blain 700 AG (PERR01)
Site Number: 143 (decimal)
NAC: 94E (hex)
Primary: 769.41875
Secondary: 770.20625
Site Neighbors: 1.137, 1.138, 1.142, 1.144, 1.145, 1.146
Unknown Neighbor Sites
1.137: CHANNEL:1-1148 DOWNLINK:769.181250
1.144: CHANNEL:1-1154 DOWNLINK:769.218750
Reesers Summit 700 AG (YORK01)
Site Number: 138 (decimal)
NAC: 943 (hex)
Primary: 773.03125
Secondary: 773.78125
Site Neighbors: 1.137, 1.142, 1.143
Martinsburg 700 AG (BLAI02)
Site Number: 142 (decimal)
NAC: 948 (hex)
Primary: 769.15625
Secondary: 769.70625
Site Neighbors: 1.138, 1.143, 1.144, 1.145, 1.146
Blain 700 AG (PERR01)
Site Number: 143 (decimal)
NAC: 94E (hex)
Primary: 769.41875
Secondary: 770.20625
Site Neighbors: 1.137, 1.138, 1.142, 1.144, 1.145, 1.146
Unknown Neighbor Sites
1.137: CHANNEL:1-1148 DOWNLINK:769.181250
1.144: CHANNEL:1-1154 DOWNLINK:769.218750
@N3BGA Awesome, good stuff!
There is rumored to be an additional 700 AG site being built just outside State College at the Little Flat (CENT08) site.
Frequencies unknown, but it will likely use some of the state's allocation of 700 MHz frequencies. I once posted a chart of them all way back in this thread, I'll try to find it again and I'll edit this post if I do.
There is rumored to be an additional 700 AG site being built just outside State College at the Little Flat (CENT08) site.
Frequencies unknown, but it will likely use some of the state's allocation of 700 MHz frequencies. I once posted a chart of them all way back in this thread, I'll try to find it again and I'll edit this post if I do.
No luck finding my original post, but here are the 96 channels allocated to the states. I'm putting them in a spoiler tag so my post doesn't take up half the screen.
| 769.15625 | 770.15625 | 773.03125 | 774.03125 |
| 769.16875 | 770.16875 | 773.04375 | 774.04375 |
| 769.18125 | 770.18125 | 773.05625 | 774.05625 |
| 769.19375 | 770.19375 | 773.06875 | 774.06875 |
| 769.20625 | 770.20625 | 773.08125 | 774.08125 |
| 769.21875 | 770.21875 | 773.09375 | 774.09375 |
| 769.40625 | 770.40625 | 773.28125 | 774.28125 |
| 769.41875 | 770.41875 | 773.29375 | 774.29375 |
| 769.43125 | 770.43125 | 773.30625 | 774.30625 |
| 769.44375 | 770.44375 | 773.31875 | 774.31875 |
| 769.45625 | 770.45625 | 773.33125 | 774.33125 |
| 769.46875 | 770.46875 | 773.34375 | 774.34375 |
| 769.65625 | 770.65625 | 773.53125 | 774.53125 |
| 769.66875 | 770.66875 | 773.54375 | 774.54375 |
| 769.68125 | 770.68125 | 773.55625 | 774.55625 |
| 769.69375 | 770.69375 | 773.56875 | 774.56875 |
| 769.70625 | 770.70625 | 773.58125 | 774.58125 |
| 769.71875 | 770.71875 | 773.59375 | 774.59375 |
| 769.90625 | 770.90625 | 773.78125 | 774.78125 |
| 769.91875 | 770.91875 | 773.79375 | 774.79375 |
| 769.93125 | 770.93125 | 773.80625 | 774.80625 |
| 769.94375 | 770.94375 | 773.81875 | 774.81875 |
| 769.95625 | 770.95625 | 773.83125 | 774.83125 |
| 769.96875 | 770.96875 | 773.84375 | 774.84375 |
FYI. The 2 unknowns match perfect for these suspects.
1.137 LYCO01 700 Williamsport/Lycoming
1.144 POTT12 700 Denton Hill/Potter
1.137 LYCO01 700 Williamsport/Lycoming
1.144 POTT12 700 Denton Hill/Potter