The AM Directional Antenna Performance Coalion’s recommendations have been recieved and added to the record of MM Docket 93-117. These recommendations are to permit a large portion of AM stations with directional antennas to determine that the antenna performance conforms to the requirements for licensing using a much simplified procedure. The draft rules are available at :
The present way that an AM station demonstrates that its antenna has the desired directional pattern is by making extensive field intensity measurements in the area within 16 km of the transmitter site. The proposed method would permit stations meeting a minimum set of criteria on design and construction to model the antenna using method of moments, and establish operating parameters by setting the operating constants to the predicted values. The antenna system monitoring system would have to be verified on a biennial basis.
This post will be updated with a link to a full listing of the comments once it is officially available on the FCC website.