Mobile Relay Associates (MRA) NEXEDGE48 System R31 - Trunked System Sites in San Diego County

[Brian]

Mobile Relay Associates (MRA) NEXEDGE Trunked System R31 Sites in San Diego County.

Reminder: Please don’t submit, or share the info with RadioReference

System Notes:
This is a DFA (Direct Frequency Access) system, and therefore CH ID (aka LCN) are not required. Uniden scanners that are capable of trunk tracking NEXEDGE systems will obtain the traffic channel information from the control channel.

You only need to program the control channel frequency into your Uniden scanner. The scanner will get the voice frequencies via the control channel when monitoring the site.

Direct Frequency Assignment (DFA) for efficient site/channel addition.
With the flexibility inherent in NXDN Gen2, you can always keep the system up to date easily and quickly. When adding a new channel or site with older Gen1 models, it has been necessary to collect every single SU on the network for reprogramming. Then all the radios had to be sent back into the field.

What has changed all this is DFA – Direct Frequency Assignment – which ensures that as soon as new frequencies are added to the network, all equipment and subscriber units connected to the network are notified automatically. No radios have to be called in. Downtime is zero. Nothing could be more welcome for site managers and SMR operators who want to add channels or sites.

RAN = NEXEDGE (Kenwood), can range from 0 to 63

Mobile Relay Associates (MRA) NEXEDGE Trunked System Sites - FCC Info
MRA/Nexedge network related FCC FRN numbers.
MRA notes, FCC Licenses List & MRA talkgroups listed on this page.
https://nxdn-systems.blogspot.com <----- Updates posted on this page.

MRA Nexedge site information
Mobile Relay Associates
NEXEDGE 4800 System: R31
RRDB: https://www.radioreference.com/db/sid/9885
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ScanRiverside - MRA page
https://www.scanriverside.com/viewtopic.php?f=61&t=1090

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NEXEDGE is a digital radio brand from Kenwood which uses the NXDN Common Air Interface. The NXDN CAI was developed jointly by Icom and Kenwood and has a following of several companies, known collectively as the NXDN Forum. The NXDN CAI uses Frequency Division Multiple Access (FDMA), employing a 4-level FSK modulation scheme.
Kenwood's brand for NXDN equipment is "NEXEDGE", while Icom's brand for NXDN equipment is "IDAS", or Icom Digital Advanced System.
http://wiki.radioreference.com/index.php/NEXEDGE
http://wiki.radioreference.com/index.php/NXDN
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New Map Shows NEXEDGE SMR Systems Nationwide
JVCKENWOOD launched an interactive, searchable website for the local and regional NEXEDGE digital SMR systems across the United States. The NEXEDGE SMR online map features more than 1,100 sites and 3,500 NEXEDGE channels on more than 100 private systems. The map will be updated as more sites are added.
https://www.rrmediagroup.com/News/NewsD ... wsID/16854
http://www.kenwood.com/usa/com/systems/coverage/map/

[Brian]

188 - Bus - Field Trip ‘disneyland’

[Brian]

TalkGroups:
1 - Radio Techs
3 - Ambulance
14 -
15 -
16
19 - Tow Trucks
20 -
23 - Security Patrols
25 -
32 - Tow Trucks\
34 - Tow Trucks/
37
40 - School Bus - LA Basin
42 - Transit Bus - LA Basin
44 - Tow Truck - Orange County \
46 - Tow Truck - Orange County /
47 - Media Production
48 - Dump Trucks
50 - Transit Bus - LA Basin \
51 - Transit Bus - LA Basin /
52 - FirstMed Ambulance (Comm1)\
54 - FirstMed Ambulance (Comm1)/
57 -
58 - Diversified Transportation Services Trucking (DTS)
59
61 -
64 - Tow Truck (AAA) - Simi Valley / Oxnard
67 - Tow Truck
72 - Spanish
73 - Tow Truck
74 - Tow Truck
75 - Alarm Company - LA metro
76 - Ambulance (Premier Medical Transport)
77 -
80 -
84 - (Spanish)
85 - Hatzolah EMS Ambulance
86 - Tow Truck
87 - Transit Bus\
88 - Transit Bus/
94 -
97 - Tow Truck - MidCity LA
98 - Ambulance BLS - LA Basin
107 - Ambulance (Liberty)
121 - Construction (Lake Henshaw)
128 - Security Guard service
129 - Security Guard service - Gardena area
138 - Tow Truck
141 - Transit - San Diego Metropolitan Transit System (MTS)
142 -
145 -
149 - Cement Trucks
150 - Bus - Simi Valley area
152 - Unknown - ‘ACS Base‘
153 - Security
154 -
155 - San Diego Metropolitan Transit System (MTS)
156 - San Diego Metropolitan Transit System (MTS)
157 - San Diego Metropolitan Transit System (MTS)
158 - Transporting
161 - - ‘golf cart’,’over 2 hours’,
168 - Trucking delivery company - LA basin - Spanish
172 - Security
176 - School Bus
179 -
180 - Tow Truck (AAA)
181 - Bus Stop
183 - Tow Truck (AAA)
185 - Tow Truck
187 - Foothill Transit - Downtown LA/SGV
190 - Foothill Transit
196 - Tow Truck (AAA)
201 - Media Stringers
206 -
207 -
208 - ACS Security Patrol \
209 - ACS Security Patrol /
210 -
214 -
216 -
217 -
218 -
219 - Security
221 -
226 - Trash Truck - Burrtec Waste Industries, Inc ?
235 - Tow Truck
240 - Freeway Service Patrol - Tow Truck - (Westbound 91)
243 - FSP - San Bernardino - Freeway Service Patrol 1
244 - FSP - San Bernardino - Freeway Service Patrol 2
245 - Tow Truck - Palmdale - (AAA)
246 - OCC ‘Pacific Wind’
248 - Encrypted
253 -
254 -
271 - Tow Truck - Lakewood area
274 - Tow Truck - Pasadena area
276 -
277 - Tow Truck ?
279 - Air Products Trucks?
281 -
282 - Towing (AAA) - (CW Base) - Lancaster area
284 - Towing - Fontana area - RAMOS Towing?
289 - Downtown L.A. Security Patrols
292 - Encrypted
301 - Rental Radios for Special Events
302 - Rental Radios for Special Events
303 - Rental Radios for Special Events
304 - Rental Radios for Special Events
305 - Rental Radios for Special Events
340 - CEMEX Cement Trucks
341 - CEMEX Cement Trucks (Los Angeles)
342 - CEMEX Cement Trucks (Orange County area)
343 - CEMEX Cement Trucks (Riverside County area)
344 - CEMEX Cement Trucks (San Diego County area)
356 - FSP 3 - Freeway Service Patrol - San Diego area
357 - Tow Truck
361 - Tow Truck
364 - Ambulance BLS - LA Basin / Orange County
367 - Tow Truck (AAA) - California Towing in Ontario/San Bernardino, CA
368 - Encrypted
369 - Encrypted
384 - Ambulance ?
401 - Law Enforcement Dispatch -
452 - Downey Unified School District -
453 - Downey Unified School District - Price Elementary
454 - Downey Unified School District - Dotty Middle School
455 - Downey Unified School District - On Campus use
456 - Downey Unified School District - Stauffer Middle School
457 - Downey Unified School District -
458 - Downey Unified School District - Columbus High School
459 - Downey Unified School District - Downey High School
460 - Downey Unified School District - Warren High School
462 - Downey Unified School District -
463 - Downey Unified School District - Maintenance
464 - Downey Unified School District - Transportation
465 - Downey Unified School District -
466 - Downey Unified School District -
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TG: 342 - CEMEX Cement Trucks (Orange County area)(Orange Yard)
TG: 343 - CEMEX Cement Trucks (Riverside County area) - ( 36xxx , 67xxx , 70xxx = truck numbers.)
TG: 344 - CEMEX Cement Trucks (San Diego County area) - ( 65xxx , 67xxx = truck numbers.)
RID:4865 [Escondido Yard]
RID:4863 [Oceanside Yard]
RID:4497 [65808] <truck number...
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[mike]

364 new talkgroup?

356 san diego fsp

[Motrac Era]

• Please post a comment if this is wrong.
• Some or all of R29 (Rebel Communications) is owned and operated by MRA. I’ve seen users on MRA roam on Rebel.
• My records show some duplicated site numbers using R31. I’m not sure how that’s possible. (?)
• Onyx Peak appears to use a Public Safety Pool frequency licensed to Red Cross.

Site: R31-24 ------------- 453.7625 – SAN BERNARDINO – ONYX PEAK
Site: R31-32 ------------- 462.53125 – SAN BERNARDINO – FLASH II
Site: R31-37 CC=16528 - 451.6500 - SAN BERNARDINO - COPPER MTN DFA
Site: R31-61 ------------- – SAN BERNARDINO – IBEX PASS SITE

You were correct. Site 37 is Copper Mountain and not Indio Hill. MRA also operates a MotoTRBO Capacity Plus system in Northern California.

[Brian]

MRA Site R31-77 - San Luis Obispo
RAN:13
Ch.17285 - 454.015625
Ch.17379 - 454.309375 - Control Channel
Ch.17483 - 454.634375
Site Neighbor:
Site: 31 - Ch.17373 454.290625
Site: 74 - Ch.17291 454.034375

Talkgroups: 61 - School Bus (Route 2)
RadioID: 662 - BASE

More notes to come


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Reminder: Please do not submit, or share the info with RadioReference

[Motrac Era]

DFA control/rest/home channels can be expected to be placed on leased spectrum whenever possible. Why? Because they won't interfere with any co-channel user on leased spectrum.

You say the System ID is 31. I show there's a second System ID 29 that reuses the site numbers and RANs in outlying areas.

There are at least a dozen more System 31 sites.

System ID 31
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Site 19 is Cactus City.
Site 20 is ½mi north of Desert Hills Outlet Mall.
Site 24 is Onyx Peak.
Site 37 is Copper Mountain.
Site 39 is Needles Frontier central office.
Site 49 is Reche Peak.
Site 50 may be Mazourka?
Site 63 is Turquoise Mountain.
Site 69 is Tecopa Peak.

System ID 29
============
Site 2 is Potosi.
Site 6 is Christmas Tree.
Site 12 is Little Maria.
Site 15 is CA State Route 127 at CA State Route 178.
Site 16 is Rob's Knob.

I've driven by the Needles C.O. only because it's on a major street. I've never been near any of the other sites.

[mike]

365 New ambulance talkgroup

[Brian]

MRA Sites logged doing the I-15 Trip to Las Vegas Notes:
https://nxdn-systems.blogspot.com/p/mra ... ogs-3.html