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About this episode

Engineering consultant Larry Will gives an update on the new FCC AM directional rules which permit much less field work for new stations and major upgrades. He also discusses a proposed FCC Rule consolidating and simplifying the determination of need for detuning nearby towers to protect AM stations.Presenter's corrections to his FCC AM talk:I had a slide set which was prepared before the final FCC Rules were adopted and which contained the broadcast coalition's request. I want to correct some information I put out at the meeting.The adopted rules for modeling do:- Allow the use of non-uniform towers- Allow the use of top loading. However, experienced users will tell you that NEC2 or 4, rather than mininec, should be used for these cases.- Allow modeling only on series fed (base insulated) towers. (I got that one correct.)Finally I suggested that, in general, when correcting for the modeling errors, that the towers must be made electrically shorter at one point and then I said they have to be made longer towards the end. The correct answer is it could require either.My apologies for the confusion.Regards,Larry WillA higher-resolution Windows Media version is available from the drop-down box on this episode's permalink page.

• Release Date

  Apr 3, 2009

• Runtime

  42:52