It was full quieting and I was in Boone at the time (actually my scanner was left in my room in Boone , I was closer to Asheville helping with the mess, I am a volunteer with NCEM)
SDS100: 155. MHz on NC VIPER county trunked system issue
- Thread starter ScannerIsLife
- Start date
tvengr
Well Known Member
If scanner is hanging up on the frequency, the NAC may eliminate any signal interfering with it. Program the NAC if you haven't already.
What is the other conventional scanner? Does that scanner receive P25 or is it an analog only scanner? Conventional can be doth analog and digital.
Op stated above he can hear it clear. No enc.
One idea that might help you, I just checked Broadcastify and the Watauga public safely feed is back live online. You can monitor it online as you listen to your scanner locally at the same time and see if it hangs up.
Regards Richard
Regards Richard
@ScannerIsLife : can you post screenshots of the sds100 when it is receiving voice on 155.715 and when it is hanging?
My "guess" is this might have to be programmed as a P25 One Frequency Trunk (OFT). It's "possible" data might be transmitted on the opposite Slot and if it's programmed as conventional, it will "lock up" as the OP is describing. That has to be self-programmed since the database doesn't provide OFT system programming.
It's simplex P25. No slots on P25 simplex only slots are on P25 phase 2 and that's only trunked.
rescueman433
Member
- Joined
- Feb 4, 2012
- Messages
- 40
This repeater has AVL traffic on it when voice is not priority. So the almost constant activity is gps polling. Hope this clears stuff up.
So as someone that knows VIPER as well as the folks that maintain it here is the final picture:
Thread Starter needs to program 2 systems:
1) VIPER 700/800Mhz
2) Conventional system with this frequency in P25 format with the correctly listed NAC.
VIPER is only 700/800Mhz and needs to be programmed as such.
I also recommend that the thread starter read up on VIPER in the NC forum as that would help him a lot.
Thread Starter needs to program 2 systems:
1) VIPER 700/800Mhz
2) Conventional system with this frequency in P25 format with the correctly listed NAC.
VIPER is only 700/800Mhz and needs to be programmed as such.
I also recommend that the thread starter read up on VIPER in the NC forum as that would help him a lot.
According to the database, one is analog and the other is P25. If you program the appropriate tone/nac, you should be able to only hear the intended agency.
| 155.715 | 158.865 | KWQ469 | RM | 146.2 PL | EMS Dispatch | EMS/Rescue Dispatch (Patched to TRS) | FMN | EMS Dispatch |
| 155.715 | 153.905 | KNGK218 | RM | 079 NAC | Boone FD Tac 1 | Fire Tac 1 | P25 | Fire Dispatch |
This is the answer. It has been a while (probably several years) since I last monitored Boone FD, but I recall that there was a good bit of such data being transmitted on 155.715. I noted the same behavior as the OP did where my scanners would keep hanging on that frequency.
I believe the repeater is up on Rich Mountain, so it has a truly impressive coverage footprint as it is easily receivable in the Triad area.
Robbie1984
Member
Sounds like it has that lag/hang time between conversations before the CC goes clear that as a common feature with trunked radio systems in the 150-174 MHz range as Victoria here in Australia had a trunked network called SMR (State Mobile Radio Network) which consisted of fire towers, ambulance, forestry/parks & wildlife as well as numerous other users till a big majority switched to an updated P25 system known as RMR with ambulance opting to go with encryption
This is not really trunked, but a conventional P25 frequency. The poster that started this tread had some terms incorrect when the thread was started. See the information on frequency in post 31 in this tread above.
ScannerIsLife
Newbie
- Joined
- Sep 5, 2024
- Messages
- 4
Thanks for all the responses. Yeah, I definitely had myself turned around. This is my first time dealing with a conventional VHF using digital, so it's a learning curve. It looks like everything is set right and I can hear transmissions on it loud and clear when they are using it. The channel will stay silent most of the time (like it should) but if they say something on it, I can pretty much guarantee for the next 30-60 minutes its going to intermittingly keep hitting on my scanner.
I am guessing I may be getting some type of interference. There are no active calls in the town as we speak and I have had my scanner on and I've gotten 240 hits in 30 minutes (here a picture of the Proscan log). These hits are brief, usually 3-5 seconds, but the longest I've seen was 3.5 minutes. I always have my squelch set to 5 and I've even set it as high as 15 when its going through an interference cycle and it doesn't help. I hear nothing when they hit but they basically hold up the scanner from hearing the other channels/TGIDs I am listening to.
I am guessing I may be getting some type of interference. There are no active calls in the town as we speak and I have had my scanner on and I've gotten 240 hits in 30 minutes (here a picture of the Proscan log). These hits are brief, usually 3-5 seconds, but the longest I've seen was 3.5 minutes. I always have my squelch set to 5 and I've even set it as high as 15 when its going through an interference cycle and it doesn't help. I hear nothing when they hit but they basically hold up the scanner from hearing the other channels/TGIDs I am listening to.
If it were me, I would try as @werinshades suggests and program as P25 One Freq. You have nothing to loose. I would also pull up the online feed and see if its hanging there. If not, try reaching out to the feed provider asking how they have it programmed in.
I made a boo boo and for some reason thought it was a DMR system. But yes, programming a NAC is worth a shot.
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