[BC] Question About Class D AM Stations

[RADIO DOCTOR]

Download and install Bob Carpenter's AM Stations program.  Updates are 
available frequently, too.  It tells you the tower height in degrees of 
each of the radiators.  http://home.earthlink.net/~lvehorn/

This, and the TVFM stations program available at the same site, are 
staples in my computers.  Excellent programs, and they work with DeLorme 
and Goodle Earth, too.  Jim Tonne's BCMap program is referenced there 
along with Jim's other goodies.  Enjoy!


On Tue, 30 Oct 2007, Paul B. Walker, Jr. wrote:

> I have a question. I know the minimum required nowadays for new AM 
> stations is 250W Day and night, however some stations are 
> Grandfathered in at lower power.
>
> http://www.radio-locator.com/cgi-bin/info?call=WSMX&service=AM
> WSMX is 140 Watts Daytime only, Non directional
>
> http://www.radio-locator.com/cgi-bin/info?call=WMJL&service=AM
> WMJL is 175 Watts Daytime only, non directional.
>
> Is it because their towers are taller then they need to be? I know to 
> be 1/4 wave at 1500khz, the towers would be around 150 to 160 feet 
> tall.  Im guessing these stations are grandfathered situations or WAY 
> taller then need be.

...Lyle, FMeXtra evangelist!     Cell: 213-880-4690
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           Go digital on FM with FMeXtra!  http://fmextra.com
Lyle Henry, CPBE  THE RADIO DOCTOR  K9DKW/K7OO  Silver Lake/Los Angeles
  SCA Consultant, Contract Engr: Brazil, China, Mexico, Taiwan, SE Asia
                         323-660-4690 Office/Home
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