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Technical
Tips from Mark W. Persons |
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If you need an AM receive antenna for a modulation monitor, a receiver for off-air monitoring or for EAS, one of your choices is a random length of wire, such as a ham radio operator might use. This is the backyard of the studios at KKJM/KYES Radio in Sauk Rapids, MN. The tower is used to support an STL (Studio-Transmitter-Link) microwave dish. The situation worked out well to hold one end of an AM receive antenna wire about 60 feet in length going down to the middle satellite dish. |
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Here
is a close-up of the bottom end of the wire antenna at the back of a
satellite dish. Note a porcelain insulator is keeping the wire
about a foot above the dish pedestal. Along side is an RG-6A/U
coaxial cable with the center conductor connected to the vertical wire.
The shield side of the cable is not connected here. It is
connected to ground in the building near a Dayton AF315AM Receiver.
In this case, the wire antenna is stranded and insulated #12 electrical wire. It can be almost any wire and does not need to be insulated. The top end of the wire has another porcelain insulator, about a foot from where it is attached to the tower. The wire antenna is between two insulators and does not connect to ground. |
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The stories go on and on.
Stop in again sometime. I'll leave the soldering iron on for you.
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Questions? Email Mark Persons: teki@mwpersons.com |
