Not true, Ron. Most AM broadcast transmitting antennas are in the range
of 80-90 electrical degrees (a quarter wave). Nearly all of the Class I
clear channel stations use antennas that are at least 180 electrical
degrees. You can see this data for any US station at
https://www.fcc.gov/media/radio/am-query
WLW's tower is 189.3 degrees. So is WLS. WGN is 195 degrees. WBZ uses
an array of four towers that are 188.5 degrees. WIND on 560 kHz near
Chicago, has an array of four 100 degree towers. The station where I
worked in my home town has an array of four 82 degree towers. And so on.
73, Jim K9YC
On Sun,2/12/2017 9:13 AM, Ron D'Eau Claire wrote:
Most BCB (0.5 to 1.6 MHz) antennas are 1/8 wavelength high (or less) which
necessitates an extensive ground system.
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