Saturday, January 16, 2016

Simple Ham Radio Antennas--2 element beam for 20 metres from gw0jxm. Post #660.


If you're having difficulty viewing this video, please insert this address into your browser search box: https://youtu.be/IPJV45MbWzM.  Here's a fairly simple 2 element beam antenna for 20 meters that you can build over a weekend or on your vacation.  Andy Davies (GW0JXM), shows us the step-by-step process of designing, building, and using this portable antenna. At the end of this video, Andy gives us a sketch of the dimensions and the approximate cost for the elements and the mast.  Andy says the SWR is 1.11:1 and the 1.5:1 bandwidth is approximately 260 Hz.  The antenna and mast weight about 30 pounds/13.5 Kg, and would require a bit of effort to lift the entire assembly off the ground.  The gamma rod is 15 mm diameter copper rod and is 39 inches/99.06 cm long.  For the latest Amateur Radio news and events, please check out the blog sidebars. These news feeds are updated daily. You can follow our blog community with a free email subscription or by tapping into the blog RSS feed.  Thanks for joining us today!  Aloha es 73 de Russ (KH6JRM).