P25 Control Channel on 462.900

[CqDx]

Hi all,

Pickup up a strong P25 control channel in Downtown LA.

462.900
System ID: 002
WACN: 00003
RFSS: 001
Site: 8
NAC: 002

FCC license search seems to suggest this is WRZM708 (NATIONAL SCIENCE AND TECHNOLOGY NETWORK) and the license has 462.900 with P25 emission designators.

No traffic or affiliations heard over a period of 48 hours monitoring.

 

[dave3825]

Anything on any of these?

Frequency​	Loc#​	Ant#​	Freq ID​	Station Class​	​	Units​	Paging Rec.​	Output Power​	Maximum ERP​
000462.75000000​	3​	1​	1​	FB​	​	1​	500​	45.000​	500.000​
000462.80000000​	6​	1​	1​	FB​	​	1​	500​	45.000​	500.000​
000462.85000000​	4​	1​	1​	FB​	​	1​	500​	45.000​	500.000​
000462.87500000​	1​	1​	1​	FB​	​	1​	500​	45.000​	500.000​
000462.92500000​	5​	1​	1​	FB​	​	1​	500​	45.000​	500.000​

 

[CqDx]

Nothing on the frequencies listed in your post.

 

[CqDx]

I found another site today,

471.425
System ID: 002
WACN: 00003
RFSS: 001
Site: 9
NAC: 002

License lookup comes back to WROW284 (NATIONAL SCIENCE AND TECHNOLOGY NETWORK, INC) and WPMP967 (NATIONAL SCIENCE AND TECHNOLOGY NETWORK, INC.) with same Corona, CA location.

 

[dave3825]

The seem to have a bunch of LTR systems. Maybe they changing them over? Seeing any LRRP data? The offer tracking also.

 

[monitor142]

Just a little follow up this morning on this new system:
Via Unitrunker from Orange County utilizing Site 9 [471.4250] (Maybe Santiago?)
Site 1: 462.8750
Site 3: 471.4250
Site 4: 462.8500
Site 8: 462.9000

A lot of changes at the NSTN system. Look for activity under Mountain Tower Ltd., PTTSTAR, etc. May no longer be associated with Ted Henry/Henry Radio. They also appear to be setting up ICOM iDAS systems to maybe sunset the LTR systems eventually.

 

[Z_DEO5]

@monitor142 do you hear any radio traffic?

 

[LAflyer]

From my location (West LA) copy both site 2 462.900 and site 9 471.425 quite strong. Typically would not be sold on 471.425 being Corona with such a strong signal, though the license ERP is listed as 1000 which is a bit nuts, so it might be afterall.

No traffic was noted monitoring these two control channels over several hours.

 

[monitor142]

@monitor142 do you hear any radio traffic?

No I did not. I did not see any voice channels as part of the site I monitored. Probably still to early if it's under development.

 

[d119]

They are now owned by Bob Burchett of NOVEXCOMM fame. Good guy.

The Electronic Entities Group

They don't have much of a web presence. Essentially a group of hams, led by a ham who's got some business sense, so they actually turn a profit. He's got some characters working for him though. So I'm not surprised weird stuff is coming up here and there.

I'm not seeing how P25 can be effective for business use considering the cost of subscribers... But my guess would be he's not using Motorola equipment for this.

 

[matty909]

site: 8
470.7250cc
470.9500scc
450.0125
450.0250
450.0500
450.1750

No voice activity despite seeing a handful or so of radios on the system

 

[mwjones]

Visiting LA on business, and found another site on this mystery system:

Site 1.7 (picked up near Hawthorne Airport)
472.9125 NAC 370 (licensed to National Science and Technology Network)
Neighbors:
Site 1.9; CC=471.42500
Site 1.4; CC=472.45000
Site 1.3; CC=462.90000

Am picking up the previously noted Site 1.9 from my hotel in Lake Forest/Orange County.

Clearly a Phase I system based on the received bandplan.

Bandplan #0: Base=450.00000 Offset=+4.3375 Spacing=12.5 BW=12.5
Bandplan #1: Base=450.00000 Offset=+4.3125 Spacing=12.5 BW=12.5
Bandplan #2: Base=450.00000 Offset=+3 Spacing=12.5 BW=12.5
Bandplan #3: Base=450.00000 Offset=+4.4875 Spacing=12.5 BW=12.5
Bandplan #4: Base=450.00000 Offset=+4.5375 Spacing=12.5 BW=12.5