On 7/23/2019 5:10 PM, Joe Subich, W4TV wrote:
Typically AM patterns are designed to put nulls in the direction
of stations that a secondary user of a frequency must protect.
One of my coop jobs from the University of Cincinnati was working in the
engineering office of a broadcast consultant designing those arrays.
Several decades ago, the AM Rules were revised to greatly reduce the
protection given to Clear Channel stations like WBZ.
73, Jim K9YC
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