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I've heard AMR dispatch refer to "North 1" as a channel on 155.220 anybody have an idea what freq this refers to? And while on the topic...what's the geographical breakdown for each freq?

Sorry should have said in the Greater Seattle area.

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Richard
Do you know Bunnery?

155.16 is South King County

155.220 is AMR's frequency here in yakima county. They are dispatched from spokane.

I hear dispatch moving units around all the time "5 I need you to head north" and usually when a unit is coming into the upper valley from the lower valley or vise versa they will say their unit number and if they are north or south of "the gap" like "5 north" or "1 south"

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Uniden BCT-8
Uniden BCT-7
Galaxy DX 959

155.160 is used by AMR in South King County? That does not sound correct as that is the statewide search & rescue frequency.

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Spectrum Communications, Inc.
526 S Locust Lane
Moses Lake, WA 98837

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They are licensed on 155.160....

American Medical Response:

KWH567 in the Seattle Area

KOI720 in the Spokane Area

Lots of S & R as well some other medical companies

ie. veterianary hospital and medical lab in Whatcom County.

Mostly all others have to do with S & R though. :D

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" SILENCE IS CONSENT "

Made to Government Specs:
1) Measured with a micrometer.
2) Marked with a chalk.
3) Cut with an axe.

Jim N7UAP - Bellingham, WA / InterceptRadio.com

Yeah, 155.16 (103.5) shoots off this tower. Here's another view. I don't know what the geographic boundaries are, but I know the units that use this channel, "South", cover all of Auburn and Federal Way, and probably more.
Also it's simplex so you can't always catch stuff, and sometimes you really want to relay for them because you can hear them great and the dispatcher can't.

Ok that makes sense....but when I listen to 155.220 and 851.4625 (they are labeled in the db as Seattle Dispatch and East/South King County Dispatch respectively).. I hear units in Snohomish County and North King County...

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Richard
Do you know Bunnery?

I don't normally listen to AMR except for when a transport seems imminent and I missed the FD's initial dispatch. But I'm listening now for about 20 minutes and here's what I've noticed:

841.4625 (D251) and 155.22 (103.5) carry the same traffic. They're not always linked. Sometimes traffic will only be on one of the frequencies. Haven't determined the correlation, but it seems to be whatever the dispatcher feels like pushing at the time. Not sure about the units. I'm multitasking so I'm not paying a ton of attention to this. And just now I heard two different dispatchers on each frequency. They seemed to have split now.

Anyways, I'm hearing mostly 900 units right now. All addresses inside Seattle proper. Heard a 100 and 800 unit, no addresses though.

105 to Overlake.
10something to Bothell.

I think I heard a 200 unit but I was in the other room.

Once upon a time I worked for Shepard Ambulance, now AMR. After time in the field I moved to dispatch. Here is what I remember (and it still seems to hold true).

F-1 is 155.220 and covers mid-Boeing field north. It has great coverage and I was able to talk simplex from Bellingham to the comm center. All frequencies had a PL of 103.5.

F-2 is 155.295. It was an admin channel in the past but when Airlift Northwest started Shepard "gave" it to them and Shepard dispatched them. Dispatching ALNW was my main position in dispatch. The rigs still had this as F-2 and could use it to monitor the aircraft to arrange pick up times, etc.

F-3 was 155.280 and covered east of Lake Washington. Crews would switch mid-span on the bridge or at the Renton "S" curves.

F-4 was 155.160 and covers south. For those of you asking, yes it is the state SAR frequency. Just as in any frequency you have to monitor before you transmit.

The SAR stuff didn't interfere much but during school months some local school buses used the F-1 frequency. That was a pain.

The rigs also had the HEAR frequency 155.340 which is used to talk tot he receiving ER's and is still in active use today. I talk on it many times a day in my current job as an ER nurse.

Regarding the rig numbers, they relate to the shift the cars works with a couple of special exceptions. The 600 series cars are Critical Care Transport that run with a Registered Nurse and an EMT. The 900 series cars are dedicated to Seattle Fire responses and typically don't do interfacility or non-emergent calls.

Former Operator 128.

Thanks for the info. I really appreciate it.

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Richard
Do you know Bunnery?