The receiver is built right on the loop antenna so there is no need for a transmission line between the antenna and the receiver. I meet the second requirement by eliminating the transmission line altogether. I meet the first requirements by building a hexagonal loop antenna that measures 1.5 meters (59 inches) across the diagonals and winding it with 24 turns of # 14 stranded copper wire. The design is based on the principle known to all amateur radio operators that the most important part of a transmitting or receiving system is a good antenna and a well matched transmission line. The loop antenna that goes with it will take another day to build from stuff you can buy at Home Depot or a similar store. You can build it in one afternoon from about $10 worth of Radio Shack parts. Here is an updated version of the simple VLF receiver first described in the April SID Supplement of the Solar Bulletin. A Simple, Easy to Build VLF Receiver to Detect Solar Flares and Gamma Ray Bursts - From the October 2002 Solar Bulletin
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