Greetings All Check out this antenna suggested by K2KQ ===>
*https://www.yccc.org/Articles/double_l.htm <https://www.yccc.org/Articles/double_l.htm>* I fabricated two of these antennas - a 160/80 and 40/30 meter combos. I use spreaders spaced every five feet to prevent wire twisting issues. I chose to feed these antennas by replacing one of the two parallel wires connected to the lower pair of horizontal wires with a coax cable. I use 50-ohm 1/8th inch diameter coax whose physical length is the same as the straight wire. At the antenna feed point the shield of the coax connects to the straight wire feeding the bottom wire and the center conductor connects to *BOTH* upper parallel wires. At the bottom of the 50-ohm coax, the shield connects to the second bottom wire. The center conductor will be addressed below. Now fabricate a Common-Mode choke at the end of the RX/TX feedline and leave a 12-inch pigtail beyond the C-M choke. Connect the Pigtail shield to the junction of the 50-ohm coax/lower wire connection. Connect the pigtail center conductor to the center conductor of the 50-ohm coax mentioned above. Adjust your wire horizontal lengths to achieve resonance at the frequency of interest. An antenna analyzer like the *RigExpert AA170 *will allow you to quickly tune these antennas. Works well for me at CN98pi 73 Dick/w7wkr ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
