[Scan-DC] New unit designators coming for DC area fire units

[Ed Tobias]

Doug -

I'm not actively involved with Montgo County anymore, so I don't have the 
best info.  However, if you scroll down through the entire message you'll 
see that Wheaton Rescue would be designated as Station 42, so their squad 
would be RS742, their first ambulance would be A742.  I think that BCC is 
going to be Station 41, so RS 18 would become RS741, RS19 would become 
RS741B, etc.  In Germantown, using this system, the station is 29 so the 
RS291 should become RS729.

I don't know when Montgo actually intends to switch over, but I'm sure 
someone on this list will know that.

Ed
----- Original Message ----- 
From: <oldsdoug at hotmail.com>
To: <scan-dc at mailman.qth.net>
Sent: Saturday, September 15, 2007 9:21 AM
Subject: RE: [Scan-DC] New unit designators coming for DC area fire units



Thanks Ed, having this email will be a big help... I may have to make up a 
cheatsheet tho!



One question, for Mtgy county, how are the BCC and Wheaton RS units going to 
work?  Ie, if station 12's ambulance is A-712, what is the current BCC 
Ambulance 12?

And will Rescue Squad 291 be RS-7291 (as opposed to Wheaton's RS-29 that 
might become RS-729?



Whew!



Squad 51 10-4, KMG-365!



:)





> From: edtobias at comcast.net
> To: scan-dc at mailman.qth.net
> Date: Fri, 14 Sep 2007 22:07:41 -0400
> Subject: [Scan-DC] New unit designators coming for DC area fire units
>
> Montgomery County, Prince George's County, and Frederick
> County, will be implementing the Washington Metropolitan Are
> 800 Regional Unit Numbering Plan.
>
> This should be functional by October 1st.
>
> The attachment (pasted below) gives an explanation of the
> new unit numbering plan.
>
> *******************************************************************
>
> COG FIRE CHIEFS
> REGIONAL UNIT NUMBERING PLAN
> JUNE 1, 2007
>
> REGIONAL UNIT NUMBERING OUTLINE
>
> Unit numbering is based on the assignment of discreet
> numeric jurisdictional identifiers to each major political
> jurisdiction within COG.
>
> These assignments are as follows:
>
> 0 - Washington, DC
> 1 - Arlington County
> 2 - City of Alexandria
> 3 - Metropolitan Washington Airports Authority
> 4 - Fairfax County
> 5 - Prince William County
> 6 - Loudoun County
> 7 - Montgomery County
> 8 - Prince George's County
> 9 - Frederick County
>
> The jurisdictional identifiers are also used to identify the
> trunked radio resources assigned to each jurisdiction in the
> radios.
>
> The agencies within COG share programming across the trunked
> radio systems in the region to facilitate interoperability
> and these identifiers are used to facilitate identification
> of, and navigation to, those resources in the mobile and
> portable radios.
>
> Apparatus/Unit Identification
>
> These numbers are used to identify apparatus in conjunction
> with unit type and the unit's assigned station number,
> using the jurisdictional identifier as a prefix for the
> station number.
>
> For example:
>
> The engine from Fairfax County Station 1 is identified as
> E401.
>
> Verbalized on the radio as "Engine Four-Oh (or
> Zero)-One"
>
> An ambulance from Montgomery County Station 12 is identified
> as A712.
>
> Verbalized on the radio as "Ambulance Seven-Twelve"
>
> A truck from Prince George's County Station 14 is
> identified as T814.
>
> Verbalized on the radio as "Truck Eight-Fourteen"
>
> In the event a single station has two or more units of the
> same type assigned to it, an alpha suffix is added to the
> unit identifier to discreetly identify each subsequent unit
> of a given type assigned to that station.
>
> The alpha suffix of the first unit (i.e. E403-A) is silent
> and will not be transmitted.
>
> All subsequent units will transmit their alpha designator.
>
> For example:
>
> The first ambulance assigned to Montgomery County Station 41
> (Ambulance 1) is identified as A741.
>
> The second ambulance from Station 41 is identified as A741B.
>
> This is verbalized on the radio as "Ambulance
> Seven-Forty-One-Bee (or Bravo)"
>
> The third ambulance from Station 41 is identified as A714C.
>
> This is verbalized on the radio as "Ambulance
> Seven-Forty-One-Cee (or Charlie)"
>
> The first rescue squad assigned to Montgomery County Station
> 42 (Rescue 2) is identified as RS742.
>
> This is verbalized as "Rescue Squad Seven-Forty-Two"
>
> The second rescue squad assigned to Station 42 is identified
> as RS742B.
>
> This is verbalized as "Rescue Squad Seven-Forty-Two-Bee
> (or Bravo)"
>
> The alpha character starting point of this document is A.
>
> There is no reason why unit suffixes could not start at a
> higher letter such as "E" if desired.
>
> The use of different phonetic vocalizations can be
> considered to help differentiate from on-scene reports side
> designation.
>
>
> Mutual Aid Responses
>
> Unit identifiers for responses with Council of Governments
> jurisdictions do not require a jurisdiction prefix such as
> "Arlington", "Fairfax", or "Montgomery", as the
> jurisdictional identifiers encodes the unit's home
> jurisdiction, and the numbering plan prevents any
> duplication of numbers across jurisdictions.
> __._,_.___
> _______________________________________________
> Scan-DC mailing list
> Scan-DC at mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/scan-dc

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