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They're DTMF, or Dual Tone Multi Frequency tones used to activate the backup station alerting system. Usually at some time before you hear the DTMF usage, you will have heard, "All stations monitor 7A and 7B..." In other words, the link to the primary station alerting is down.

It's not there right now, but T1 (a Pierce?) 110ft tiller has been delivered to the SDFD Repair Facility for acceptance. It is quite cool! No pictures yet. I haven't had the time...Tim Actually, the tiller is a Crimson. And it is very nice. Several other departments are now using that spec with min...

Tim,
Any chance of going back to simulcasting on VHF? I can't think of any reason not to. It would just be another back up to the 800.

Which reads: 21707. No motor vehicle, except an authorized emergency vehicle or a vehicle of a duly authorized member of a fire or police department, shall be operated within the block wherein an emergency situation responded to by any fire department vehicle exists, except that in the event the nea...

I've been on fires with Lemon Grove units where the above units were all on scene. Plus Engine 11, Engine 13 and Truck 11. It gets fun.

And the Poway switch was absolutely due to SD needing the numbers in the future, though they won't be needed for a while.

The Poway numbers are part of the countywide numbering system. The first digit is the Zone; in this case 3 for San Diego FD/Central. The second digit is for battalion or department. In this case, the 7 should really be SDFD Battalion 7, but Poway has been 37xx for a long time. The third digit is the...

Thanks for all the good info on SDFD dispatching. I've been more than a bit confused by the different talkgroups. Here's info I can add. The SDFD dispatch TG does work both ways, but SDFD protocol is that dispatches only go on it. Units use Admin to talk to dispatch, or the channel they've been disp...

Gee, and thought the OB Ranger, aka Battalion Chief Gordie Browne was dead!

One of the major players in that magazine lives here in San Diego. His son is a firefighter with SDFD.

CDF does have medics in many areas. Here in SD County, CDF staffs Medics 80 and 81 in Ramona.

John