|
Posted:  Wed Jul 25 2018, 11:02pm | |
| Posted by: Dave3825us | Posts: 1219
| | | |
Old Display Name: Dave
| |
 Premium Member | Joined: Fri Mar 24 2006, 10:47pm
|
So the 2 active sites with control channel data display nac as 3C then the site number, ie: Site 3 is 3C3 and Site 6 is 3C6
Had sdrtrunk running on a few suff digital channels, and saw nac 3C4 on that freq that was originally in the database as site 4. 851.1625. Not sure what I am looking at but first time I ever saw 3C4 in there. I also have not used sdrtrunk in a few months.
What does the message mean?
|
| Back to top | | |
|
| Posted: Thu Jul 26 2018, 02:23am | |
| Posted by: GTR8000 | Posts: 190
| | | |
| |
| Joined: Fri Nov 25 2016, 07:07am
|
It means that a NAC of 3C4 is detected on 851.1625
Beyond that, I'm not sure what you're decoding. Is there an active P25 control channel on any of those four frequencies? What about a data channel?
Are you 100% certain that the four lowest 851 MHz frequencies are still actively part of the SmartZone system? It looks like that software is detecting FDMA activity on 851.0625, 851.0875, 851.1625, and 851.2375. That could be from a pure P25 system, or digital talkgroups from the SmartZone system, although it looks like most are analog.
Frankly, I'm not familiar with SDRTrunk, so I'm not certain how you're getting the data you're getting. I would prefer if you ran the latest DSD+ Fast Lane to get a clearer picture of what those channels are being used for.
At the very least, I would scan the entire 769-775 and 851-854 spectrum and see how many P25 control channels you find, specifically any for SysID 3CE. |
| Back to top | | |
|
| Posted: Thu Jul 26 2018, 09:55pm | |
| Posted by: thehawk | Posts: 134
| | | |
| |
| Joined: Tue Jan 20 2015, 10:02pm
|
| Found site #4 for the p25 system. siteid 001-004 control channel 851.1625 alternates of 852.425, 852.675, 852.7375 and then voice channels 853.125 & 853.225. the 1st precinct site is listed as a peer. 3611 is an active tg 6th precinct patch from the smartzone system |
| Back to top | | |
|
| Posted: Thu Jul 26 2018, 10:34pm | |
| Posted by: GTR8000 | Posts: 190
| | | |
| |
| Joined: Fri Nov 25 2016, 07:07am
|
| Excellent work, Hawk! Site and talkgroup added (back) to RRDB. |
| Back to top | | |
|
| Posted: Thu Jul 26 2018, 10:46pm | |
| Posted by: GTR8000 | Posts: 190
| | | |
| |
| Joined: Fri Nov 25 2016, 07:07am
|
Would it be possible for someone to observe the SmartZone system main simulcast for a few days in the software of your choice, and verify whether any of the following frequencies that are now part of Site 4 of the P25 system are still in use on the SmartZone system? It would be unusual for them to be active on two systems, but not entirely impossible. If no activity is observed on the 3D0C SmartZone system, I'm going to remove them. Thanks!
851.1625
852.425
852.675
852.7375
853.125
853.225 |
| Back to top | | |
|
| Posted: Thu Jul 26 2018, 11:00pm | |
| Posted by: thehawk | Posts: 134
| | | |
| |
| Joined: Tue Jan 20 2015, 10:02pm
|
| 852.6750, 852.7375, are still part of the smartzone system ill check the others when i get more time |
| Back to top | | |
|
| Posted: Fri Jul 27 2018, 12:55am | |
| Posted by: Dave3825us | Posts: 1219
| | | |
Old Display Name: Dave
| |
| Premium Member | Joined: Fri Mar 24 2006, 10:47pm
|
Going to Patchogue tomorrow. Will bring 436 and maybe laptop.
Lol BSI=CHANGEME CH 853.225
Sdrsharp results
851.1625 Barely getting cc decodes in East Islip, but do see a cc
852.4250 silent for 40 minutes
852.6750 analog voice
852.7375 analog voice
853.1250 analog voice
853.2250 silent for 40 minutes
Unitrunker results
2 radio joins in last 40 minutes.
radio id's
10852 (4th pct unit) target=54576 4th pct talk group on 800 smartzone
24016 (unknown) target=24016 enc talk group on 800 smartzone
Sdrtrunk results
[ Edited Fri Jul 27 2018, 02:28am ] |
| Back to top | | |
|
| Posted: Fri Jul 27 2018, 08:38pm | |
| Posted by: thehawk | Posts: 134
| | | |
| |
| Joined: Tue Jan 20 2015, 10:02pm
|
| And just like that site 4 is no longer on the air and 851.1625 is being used on the smartzone system |
| Back to top | | |
|
| Posted: Fri Jul 27 2018, 11:22pm | |
| Posted by: Dave3825us | Posts: 1219
| | | |
Old Display Name: Dave
| |
| Premium Member | Joined: Fri Mar 24 2006, 10:47pm
|
| Yup. Was just over there and was hearing analog voice on 851.1625. |
| Back to top | | |
|
| Posted: Wed Aug 01 2018, 11:51am | |
| Posted by: Dave3825us | Posts: 1219
| | | |
Old Display Name: Dave
| |
| Premium Member | Joined: Fri Mar 24 2006, 10:47pm
|
| The other day when site 4 went on air, I could barely get the control channel. Yesterday and today, signal is booming. I know site 4 shows in database as being Selden, but is it possible its simulcast? Going west of East Islip today and will post again later... 851.1625 is on the air as of 7 40 am today.. |
| Back to top | | |
|
|
|
Colour Key:
