A recent observation. Keep an eye on the signal strenghts. I have noticed that site 21 has dropped way down in signal strength. Site 45 is super strong and looks like its stronger than I last checked it out. A unsubstantiated suspicion is that the power outputs are being tweaked as the site is brought into the network. Another possibility is the reuse of the frequency. Keep an eye on sites 45 and 47 they are the same CC frequency one or both may change their signal strength.
LMRN General Discussion
- Thread starter Enjoi19
- Start date
Jradioptbo
Member
The network includes four master sites and 193 network towers. An additional 282 towers support communications for forest firefighters. In many cases the work may be invisible to the public, carried out in remote locations or involving the installation of new antennas on existing
radio masts and towers.
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radio masts and towers.
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EJB
20 + year membership
Been up for a long time. Someone I used to know told me about this stuff and who is working on it.
Jradioptbo
Member
There is also one link I am trying to locate. It is about that the local Police Services of Ontario must contact the OPP regarding the OPC common channel to have a P25 LMRN link on whatever radio system they are currently using. The old Police Common channel 142.770 will be decommissioned.
Let me see if i can find it again. Most Police Services already have this.
OPP Communication and Technology Services Bureau.
Let me see if i can find it again. Most Police Services already have this.
OPP Communication and Technology Services Bureau.
Nice map. I am sure many here would like a higher resolution version if you have it.
These chirps keep the displays on the portables updated with the repeater status (System / Local). In System mode, the vehicle's repeater is enabled. In Local mode, any mobiles (which have Local mode enabled) and portables communicate directly without passing that traffic to the system. Good for parades, special events, escorts, etc. If the mobile radio is in Local mode, pressing a button on the radio changes the mode so if the user needs to talk to dispatch they can enable the repeater, and the display on the portable reflects the change.
EJB
20 + year membership
I'm doing some searches this morning on my SDS100. I heard and saw some activity at 142.17, P25 NAC AD8H, SYS ID AD9H.
It's pretty weak, the NAC and SYS ID are flashing in and out. Grinding normal P25 control channel acquisition.
I look on the LMRN page and I see that Pontypool has this frequency for its LMRN tower.
As I mentioned here yesterday, I was in the Pontypool listening area on the weekend and monitored Zone 1 Pontypool and Zone 2 Peterborough and Cobourg, but I'm back home now in Hamilton.
It's not totally crazy for me to be able to monitor Pontypool from here. I've done it in the past in the summer in weather conditions similar to this, but generally at night but I'm typing this at 0930 July 10.
The SDS in Search Mode is very hit and miss with VHF HI FleetNet towers, as it snags PONTYPOOL LMRN. I don't hear Brantford or even the Local Charlton FleetNet towers.
Can anyone make sense of this?
It's pretty weak, the NAC and SYS ID are flashing in and out. Grinding normal P25 control channel acquisition.
I look on the LMRN page and I see that Pontypool has this frequency for its LMRN tower.
As I mentioned here yesterday, I was in the Pontypool listening area on the weekend and monitored Zone 1 Pontypool and Zone 2 Peterborough and Cobourg, but I'm back home now in Hamilton.
It's not totally crazy for me to be able to monitor Pontypool from here. I've done it in the past in the summer in weather conditions similar to this, but generally at night but I'm typing this at 0930 July 10.
The SDS in Search Mode is very hit and miss with VHF HI FleetNet towers, as it snags PONTYPOOL LMRN. I don't hear Brantford or even the Local Charlton FleetNet towers.
Can anyone make sense of this?
Possibly adjacent towers or voice frequencies raising the noise floor and causing some de-sense or noise?
If you have a chance take a look at the 142-143 band with SDR in waterfall, and see what signals pop up near the ones your trying to capture.
If its not RF related, I have seen similar hit and miss on 536's. Either the search will jump right over chunks of the band (EG 142.2-142.6 for no RF related reason that I have found). I do know the units drift off center tuning (age, heat etc).
This causes the search direction to have a huge effect. You will capture weak towers searching down, but not up. The other possibility is in the digital settings. The P25 wait time may be too long, or too short for the scanner to decide that there is a usable signal present.
The 100/200 also have several filtering settings you can adjust. I believe that the stock settings are not quite right for capturing P25 P2 control channels efficiently. Especially when the signal is less than 100%.
If you have a chance take a look at the 142-143 band with SDR in waterfall, and see what signals pop up near the ones your trying to capture.
If its not RF related, I have seen similar hit and miss on 536's. Either the search will jump right over chunks of the band (EG 142.2-142.6 for no RF related reason that I have found). I do know the units drift off center tuning (age, heat etc).
This causes the search direction to have a huge effect. You will capture weak towers searching down, but not up. The other possibility is in the digital settings. The P25 wait time may be too long, or too short for the scanner to decide that there is a usable signal present.
The 100/200 also have several filtering settings you can adjust. I believe that the stock settings are not quite right for capturing P25 P2 control channels efficiently. Especially when the signal is less than 100%.
EJB
20 + year membership
What settings would you suggest?
It will work with the new system, not the existing Fleetnet. Not sure if it'll handle Phase II calls though, I haven't used it in quite a while.
Not yet. Only Bell radio tech's from time to time. Continue listening to FleetNet for now.
No. It's still being built out, but it'll be sooner than later.
The only OPP talkgroups that I hear in Waterloo are OPS1, 44 , 12 and 14. The only sites that are active are Cedarwoods and Woodlawn.
In the past I picked up a lot more sites and talkgroups with my old BCD 996XT (or whatever it was called) on FleetNet. That's why I had thought that some users had maybe already migrated.
Thanks
It may depend on the scanner you use. I use a BCD 325P2 for PRO96Com.
The BCD 396, 396XT, 996, 996XT, 996P2 would all work as well.
None of the SD card scanners like BCD 436HP, BCD 536HP, HomePatrol 1 and 2, or the SDS series will work with that program.
I just tried it with FleetNet and it does not work. When I moved over to PSRN, it populated immediately.
Well, I guess that would fall into the "Keep it Stupid Simple" (KiSS) principal. Most end-users aren't familiar with how the radios work, other than switching channels, and keying up. On a daily basis radios get bumped, sat on or even dropped. Having it strapped to the talkgroup would eliminate the possibility of any conversations getting "leaked" for lack of a better word.
Sadly I personally have not heard any 'clear' audio transmissions on the new LMRN network yet. Even today, they have been extremely busy on at least 2 of the towers popping up for me down here in NiagaraFalls. I am picking up Skylon Tower and I am also getting Kincardine. All traffic that I've picked up have occurred on talkgroup 696 (02B8) with transmission lasting about 20-60 seconds long.
