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

[oldsdoug at hotmail.com]

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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