San Bernardino county Mercy Air Dispatch.

avdrummerboy

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Hey all, just curious if anyone else has noticed what appears to be some sort of digital (NXDN maybe?) noise on the Air Methods Mercy Air channel for Southern California, 155.220, PL 127.2 Hz. All I hear anymore is static sounding noise and I don't have anything that receives any digital other than P25.
 

Randyk4661

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If it were NXDN I believe it would have a RAN code.
I will have to give the frequency a listen later today and see if I can hear it in Orange county.
There is also a bus company that uses the frequency and tone in Los Angeles.
 

techman210

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I haven’t heard them on their VHF frequencies (FM and AM airband) for a very long time.

They are probably on the encrypted EMS talkgroups - or their own - on the SB County system.
 

f40ph

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155.220 was only used in the desert 131.675 AM was used in the valley areas. This info goes WAY back. 155.220 was also shared with the Adelanto School district. Definitely want to filter the PL tone so you "only" hear Mercy. I wonder if they're still using it at all?

I know they use the P25 COMCTR channel to talk with Comm Center regarding scene call dispatching. However, I still think they need to talk to the company to update them when going on interfacility calls.
 

f40ph

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That's correct. They used to have Santiago and a local tower in Fontana on that freq when dispatch was in Fontana.
 
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