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Radio
Broadcast Technical Consulting and Sales
10032 Island Drive, Brainerd, MN
56401
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Radio
Broadcast Technical Consulting and Sales |
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Technical Tips from Mark W. Persons |
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AM Loop Receiving Antenna |
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Scott Schmeling, at the Linder Group of radio stations in Minnesota, needed a good receive antenna to pickup an AM station at one of their studio locations. Rather than spend a lot of money, Scott elected to build a non-shielded loop using 1-inch PVC electrical conduit with a PVC T connector. The antenna is to be mounted outdoors away from electrical noise. Scott will install a 0-365 pf variable capacitor across the five turns of loop to resonate the loop on the high end of the AM broadcast band. It may take as many as 15 turns for the low end of the band. |
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The plan is to connect a receiver across one turn of the loop. Note there is an F connector so that a 75-ohm coaxial cable can be connected to the loop. RG-59 or RG-6 cable is very plentiful today and makes for an inexpensive way to get the signal from the outside loop to a rack-mounted Dayton AF310 AM receiver. |
The stories go on and on.
Stop in again sometime. I'll leave the soldering iron on for you.
Mark W. Persons
Ham WØMH
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page last edited 03/15/2011
