Morongo Basin Ambulance

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avdrummerboy

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For any who listen to this area- system 4 South desert area of SBD County,- some insider information that Morongo Basin Ambulance is going to be moving away from the county system and onto their own UHF system. The frequencies are available from the FCC database.

Most of the repeaters are linked, though not simulcast, except for the one on Onyx, which is a standalone due to distance from the primary response area. I'll try to figure out which ones equate with which channels (and alpha tags) on the unit and HT radios. So far all I have is this:

MBA Freq.’s

151.625 MBA ALERT-------> confirmed

OUTS

1- 460.8750 YUCCA

2- 461.4375

3- 461.7750 ONYX

4- 462.1500 MORONGO

5- 462.8125

6- 462.9125

7- 464.2375 29 PALMS

8- 464.2625

9- 464.5000


INPUTS

1- 465.8750 YUCCA

2- 466.4375

3- 466.7750 ONYX

4- 467.1500 MORONGO

5- 467.8125

6- 467.9125

7- 469.2375 29 PALMS

8- 469.2625

9- 469.5000

Pairs OUT/ IN

1- 460.8750/ 465.8750 YUCCA

2- 461.4375/ 466.4375

3- 461.7750/ 466.7750 ONYX

4- 462.1500/ 467.1500 MORONGO

5- 462.8125/ 467.8125

6- 462.9125/ 467.9125

7- 464.2375/ 469.2375 29 PALMS

8- 464.2625/ 469.2625

9- 464.5000/ 469.5000
 
Last edited:

avdrummerboy

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Edited, the uppercase names are the channel names in the radios, the other channels are not yet programmed, though they are current on the license, usage could come around as TAC channels or something similar.
 

Duster

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Nice catch...what is prompting the move?

When I worked for them in the late 80's, we had a single VHF simplex channel transmitting from a tower at the JT office. It sucked in Morongo and east of Adobe in 29 Palms.
 

avdrummerboy

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Subscriber fees to the 800 system. Rigs will still keep the county radios as per state requirements, but the HT's will go. It's going to take some time to fully convert it over, but it's slowly happening. The VHF freq. is still there but it's not used at all, right now just a lot of testing on the UHF channels.
 

f40ph

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Competition is good. It keeps options open and government run carriers from running away with your subscriber fees no matter how much it costs. On the other hand, going with a commercial vendor "can have" limitations in coverage area, response for repair, etc. It can be kinda sticky in SBCo since EMS agencies MUST maintain a limited amount of 800mhz radios for hospital contact.
 

avdrummerboy

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All very true, as I said, the rigs will keep the 800 Mhz radios for the hospital and other county channels. In the limited testing that is going on out there with the UHF system, there is already limited coverage and audio issues etc. so it's definitely going to take some time to be fully implemented, that's for sure.
 

mtnmadman

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wondering??

You seem to have knowlede of this, so whats up with the "fall alpha 4" on the disp.. do you have any idea what these codes are???
 

avdrummerboy

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They're what are known as determinate codes, or sometime colloquially as 'Echo' codes. They are just a way to prioritize and categorize a certain type of call.

A little basic info: Medical Priority Dispatch System - Wikipedia, the free encyclopedia

Every system is different, so there is some variation in what they mean completely, but basically the higher the letter, the more severe, Alpha to Echo, and Omega is a transfer to another service.From field experience, the only thing I can tell you about them is that what you hear dispatched is not what you are going to roll up onto.

The number after at letter according to EMD standards are subcategories of whatever the call type is, so fall A4, would be a fall of not high priority, theoretically a 'cold' i.e. no lights and sirens approach, though in most of CA all calls are code three unless specifically stated otherwise. The patient is conscious and breathing and there are no immediate life threats, all based on RP's call of course and the 4 is the subcategory basically the elements of the fall scenario that you should theoretically be coming up upon.

I probably confused it a lot more than necessary, but once you get the basics, it is pretty easy to understand what is being relayed.
 

mtnmadman

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thanks everyone

Well, i knew you would know.. i kinda thought it was somethin like that, but now i now for sure. I have noticed that at least on sys 8, not aal depts seem to be using it (RSFD for one) thanks again. Do you think other non SBCO depts may ditch 800 system, for the cost????
 

avdrummerboy

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Private companies don't necessarily say the D4, A1, whatever on the radio, and even if it's not said OTA, it still shows on the pagers.

As to other companies/ users ditching the 800 systems, I do not know, I know that a few, like AMR Victorville division moved onto the county system.
 

avdrummerboy

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We cover 2700 square miles and average 5200 calls a year; Morongo Valley, Joshua Tree, 29 Palms, Landers, Rimrock, Pioneertown, most of Johnson Valley, we go pretty much up to the I-40 and east to at least the 177, though most of what happens out in the big open county areas tends to be OHV trauma based calls are are done by air ambulance and we get cancelled before we even get there. We don't cover Yucca Valley or the marine base (except mutual aid, of course.)
 

avdrummerboy

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A little late in the game, but didn't know these were located in the EMS protocols and it is a EMD thing. But, here is a list of all the categories and subcategories so when you hear A1, D4, whatever, you know what they are referring to.
 

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f40ph

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Remember, the accuracy of the calltypes goes back to the "quality" of the 911 informant. Unfortunately, a rather low percentage are actually correct in my first hand experience.
 

avdrummerboy

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Oh yeah, the RP's hardly ever give it to us as it is, I've rolled on many a scene only to wonder just how it was described over the phone, I'd love to hear some of the 911 taped that I've rolled onto lol
 

avdrummerboy

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So, finally have pl.'s and known frequencies for you all on this. Testing has been ongoing and there are still plenty of problems but the hope is that by next year the UHF system will be the new dispatching system.

460.8750/ 465.8750 YUCCA PL 162.2 ENC/DEC

462.1500/ 467.1500 MORONGO PL 123.0 ENC/DEC

464.2375/ 469.2375 29 PALMS PL 162.2 ENC/DEC

461.7750/ 466.7750 ONYX PL 123.0 ENC/DEC

Hope this helps
 

avdrummerboy

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More frequencies for you all, finally added some tac channels to the lineup

461.2250 MBATAC 1 pl 136.5
453.1250 MBATAC 2 pl 123.0
462.5625 MBATAC 3 pl 110.9

Also the 29 Palms repeater is a DPL of 143!
 

ActionJackson

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Remember, the accuracy of the calltypes goes back to the "quality" of the 911 informant.
Your informant is only as good as the questions you ask. There are no public classes on how to and what to expect when you dial 911. Couple that with fear, anxiety, anger, confusion or all of the above and your informant needs serious guidance in producing the information that generates accurate location and discription of the situation. The accuracy of the call type goes back to the quality of the dispatcher.
 

tmccormick87

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A little late in the game, but didn't know these were located in the EMS protocols and it is a EMD thing. But, here is a list of all the categories and subcategories so when you hear A1, D4, whatever, you know what they are referring to.
Thanks for this!
And I'm late to the game as well, just now getting familiar with this forum.
Very interesting to read, and will certainly help in my understanding of the calls I hear on the scanner. I mostly understood the Alpha through Echo coding, as I had already seen a table printed by County Fire, but was recently caught off guard when I heard a call labeled as Omega. I actually wondered if I had heard it correctly, lol. Seeing the card and numerical orders was a nice bonus too.

I don't have a real scanner, I only listen using Scanner Radio on my cell phone, so will these upcoming changes for MBA change what I'll be able to hear using the app? I think I'm catching most of the dispatches through the app now, but I'm totally new at this, and I've not had to think about things such as frequencies until now.

Did I read this thread correctly in that you work at MBA? If you do, maybe you can answer one more question for me. When was a Station 4 added? I thought there were only the 3, with Indian Cove being the newest, as reported on Z107, and I was surprised to hear one of the units mention #4 one day. Trivial, I know, lol, but I would love it if you could satisfy my curiosity! :cool:
 
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