--- On Wed, 4/6/11, Carl <km1h@jeremy.mv.com> wrote:
>> Broadcast stations power is based upon their license
> specifications and
> field strength measurements are taken at the time of
> certification. The FCC
> also requires regular field strength measurements to
> certify that you are
> both still maintaing the power level and that nulls are as
> required in
> directional arrays. Running a too low a power level due to
> deteriorated
> radial fields or feedlines is just as illegal as running
> too much power.
Field strength measurements are normally not required for broadcast stations.
The only time we've had it done was when a cell tower was constructed near one
of our AMs and we had to determine if it re-radiated the AM and made it
unintentionally directional. Not sure about directionals, thankfully I've never
worked for one.
73, Paul K4PDM
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