Home › Forums › temp › Constructing Properly Loaded Antennas for the Lower End of the AM Band – Below 800 Khz. › Texas Bug Catcher
Total posts : 68
I thought this was interesting:
“(the) 160 meter coil… is wound with 63 turns of 12 gauge wire at 6 turns-per-inch. This coil was designed primarily for 160 meter operation and will operate quite satisfactorily on 75/80 meters but tuning on the higher bands is not recommended because of the excessive shorted turns. A whip at least 7-1/2 feet long with a 20 inch diameter capacity hat is required to load this coil on the low end of 160 meters. If a whip at least 8-1/2 feet long is used, the 16-inch capacity hat may be used with this coil for 160 meter operation. For portable operation, a 10-foot whip, made up of a 102-inch whip and an 18- or 24-inch extender mast, may also be used to give full 160 meter coverage without a capacity hat. Adding a 20-inch capacity hat to this combination will extend operation down into the 1700 kHz experimenters band.”
These coils seem wound to exacting specifications, especially with regard to turn spacing and wire diameter.
I wonder if we could learn something from this?
These photos linked from this page:
[img=250 x 150]http://www.texasbugcatcher.com/photo/680-089.jpg[/img]
[img=192 x 256]http://www.texasbugcatcher.com/photo/gallery/k9jts-02.jpg[/img]
[img=256 x 420]http://www.texasbugcatcher.com/photo/gallery/k5ijx1383.jpg[/img]