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Carolina Windom revisited: 4 to 1 balun does nothing to choke RF ?
I also liked my Inverted L made out of a homebrew 9' bug catcher mobile antenna with 25' horizontal clip on extension for 40/80 and clip on shunt caps at the mobile mount. Works well in the campground. Keeping the antenna matched to the coax DOES make a difference, considering coax losses. A "one size fits all" antenna is still VERY MUCH a pipe dream ... in my humble opinion (or, IMHO ...) Regards, JS Then there are the discones and LPDAs where size matters. The bug catcher worked well and still does despite many repairs, 15-40 m by itself. 40 and 80 with the extension. It's a modified hamstick with 4" dia. by 8" hand wound #14 coil in the center with scrap plastic forms. There must be an unwritten law that says only the ugliest projects will work. It was a pipe dream of flea clips, but the goal was to do all matching on the antenna. I used it mobile with a 365 pf broadcast variable on the mount and a remote operator into the cab. Add a little series XsubL with a flea clip, matched out with the cap to raise the impedance at the mount. The coil would self resonate so 12 and 17 wouldn't work (perhaps a longer stepped pitch later). Shorting around the coil got me 10m back. I would tune for min SWR (actually ALC) and the difference between not heard with an OK SWR and heard well after a fine tuning was repeatable over and over. Even with as little as 15' of RG8x. Worked a lot of DX on the commute back and forth to school. Had no time to do it any where else. |
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