[Amps] Where is power measured ?

[Paul Manuel]

--- On Wed, 4/6/11, Carl <km1h at 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