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Message: [QUOTE="Piggie, post: 22072, member: 2941"]Quad loops are great antennas and are slightly lower noise floor than a dipole, plus about 2 db (dog biscuits) more gain than a dipole.Actually the quad should be feed with a 1:1 balun. These are next to impossible to find for 100 MHz. I can probably do a search and find one you could build. However you can build a choke easy enough.  Wrap about 6 to 8 turns of coax right at the feed point and just use electrical tape to hold the loop.  This will stop most current on shield of the coax and make a better pattern.[/QUOTE]