Topband: Modeling the proverbial "vertical on a beach"

[Radio KH6O]

Anyone who is  familiar with the San Francisco Bay Area has noted
KGO's three AM broadcast band transmitting antennas located *IN* the
water of the East Bay. From KGO's history page:

"Three 300-foot towers were constructed, each anchored in salt water.
KGO became the first San Francisco station to broadcast with one of
the new multi-tower directional antenna systems. The new signal
favored north-south reception, allowing KGO to be heard clearly along
the entire Pacific coast at night, while protecting a New York station
on the same frequency from interference."

Reference: http://bayarearadio.org/schneider/kgo.shtml

73, Jeff KH6O / 6