Re: BUR-GBH

[Ron Bello <RBello@BelloAssoc.com>]

Why is GBH-FM moving ?


At 02:00 PM 6/7/02 +0000, dan.strassberg@att.net wrote:
>21 kW at 323m AAT is substantially more than the
>equivalent of 50 kW at 150m (grandfathered for many
>Class Bs to 50 kW at 500', AKA 152.4m). A rough rule of
>thumb for calculating the ERP at the class-maximum HAAT
>is to multiply the ERP by the square of the ratio of the
>HAAT to the class-maximum HAAT. Squaring 323/150, yields
>4.637. 4.637*21=97.4 kW. Thus, WGBH-FM is apparently
>being grandfathered to its current ERP at 150m. That's
>essentially twice the maximum power for Class Bs. That
>would make the station what?--A C1? The current HAAT is
>around 650', so the move will, in effect, cut the
>station's power by about half, making it effectively
>about twice as powerful as the market's most powerful
>commercial FMs but only about half as powerful as it
>used to be.
>--
>dan.strassberg@att.net
>617-558-4205
>eFax 707-215-6367
>
> > Because WGBH is raising it's HAAT from 198m to 323m, and they're moving
> > location a good distance north and west, they're only going to run 21KW,
> > down from their 97KW.
> >
> > Not unusual - 97KW was a grandfathered amount of power anyway for this
> > license class - any major modification would have required conformity to
> > current limits. In this case, since they're currently licensed as a class
> > B, they couldn't remain above 50KW with this significant change in
> > facilities.
> >
> > -Peter Murray (N3IXY)
> > Pittsburgh, PA
> >
> >
> > On Thu, 6 Jun 2002, Ron Bello wrote:
> >
> > >
> > > Does WGBH get to keep it's higher power while moving to  the WBZ-TV 
> tower ?
> > >
> > >
> > > >Anybody know when 'GBH-FM will move to the WBZ-TV tower?
> > > >--
> > > >dan.strassberg@att.net
> > > >617-558-4205
> > > >eFax 707-215-6367
> > > >
> > >
> > >
> > >
> >