up here, amr simply uses cdf/local fire for dispatch. it works... although the night shifters usually take a couple calls some nights when they're sleeping ;-)selgaran said:I think he is saying that AMR is a cheap-a** for-profit company that will spend as little money as possible. If their current radio system (whatever it is up there in Placer) is working, they won't spend the money.
I'll second all that. I often see AMR units roll out as Davis dispatch is toning out a station. Sometimes they relay back to their dispatch of the incoming call, but I've seen them roll out Code 2 until they get the assignment from their dispatch. At that time, they get up on the Davis system or Blue fire (if they dont have a 800mhz mobile) and let Davis know they're enroute.selgaran said:AMR Yolo is on 155.235 simplex, on which I occasionally also hear AMR dispatch talking to Placer units. My guess is that the dispatcher is covering two channels at that time, and is simulselected so the units know s/he is busier, or perhaps just selected up on the wrong channel.
The crews are most definitely monitoring the FD channels, as I've frequently heard things like "312, incoming traffic Woodland" relayed to dispatch when a crew hears a call before they get it from dispatch.
BirkenVogt said:Hasn't anybody wondered why they don't just reapply for that freq in Sac County or a new one? With the FCC's recent decisions high band freqs are no longer in short supply.
As to the Sacramento dispatch center, I have been listening for a couple days and they seem very efficient. I am wondering how they work EMD there. I heard the dispatcher say, "stand by, on 911" today. Normally an ambulance dispatch center will only get the call nature and location from the PSAP and not get the opportunity to do any interrogation themselves. How does this work?
BirkenVogt said:When I say "no longer in short supply" I mean that the FCC has relaxed and is now allowing new wideband applications again, however I can't recall if it would be OK in this case since the freq is now gone. But it can't be that hard to find a narrowband freq instead. My company has licensed 5 narrowband channels recently, and we are line of sight to Sacramento. Only one has co-channel interference from Sacramento.
Kirk, ambulances are generally not dispatched on county fire systems, Nevada County and Eldorado County are exceptions. But I don't know if Eldorado has private ambulances or not. I agree that Nextel is not a very good idea. But many times it takes a big disaster to make them see that.
Hopefully the Sac County ambulances have the placer freq in their radios for backup. The transmitter site for the Placer County system is located on that big tower near Garfield and Auburn Blvd per the license anyway. So it would work fine in Sacramento if necessary though the traffic might get heavy.
Absolutely.Kirk said:Is anyone else troubled at the thought of a 911-response ambulance company relying on Nextel for dispatch?
Not always. AMR is using a business/industrial Passport system in Stanislaus and San Joaquin Counties to dispatch their units with varying success. If they could talk their vendor into putting voting receivers all over the place, they might be able to get coverage like the county fire or city systems have. Without that, their portables have a real problem. AMR is not only a 911 contract ambulance provider in this area, they are also San Joaquin County's contract fire/EMS dispatch center now.Kirk said:I hope I misunderstood and that the ambulances are dispatched on the county fire system in areas where they hold 911 contracts.
Also, not always. On VHF, they are mostly using non-mountaintop sites in most parts of the central valley because of licensing restrictions they cannot get around. They use alphanumeric pagers for some of their dispatch activities - not the best choice in terms of lack of back-up AC power for the paging transmitters. There are many commercial two-way sites that have no emergency power and many paging transmitters in those sites.Kirk said:I assume in areas where AMR uses a single simplex VHF channel for dispatch, they have a mountaintop tone remote to extend coverage? Do the EMTs/medics carry VHF HTs in that case, or just Nextel?