Tuesday, November 11, 2014

Simple Ham Radio Antennas: A Portable HF Ham Radio Antenna. Post # 321.

Helpful video by Dave (W0ZF) on how to build a simple portable antenna for the amateur radio bands.  The antenna, whether it be for 20 meters, or some other band , is simple, inexpensive, and easy to build.  I've built several 20 and 40 meter versions following Dave's general example.  All have worked very well with powers in the QRP range (1-10 watts).  I got my speaker wire from Radio Shack, the pole was a telescoping fiberglass fishing pole I found at The Sports Authority, and the nylon string, insulators, and coax I had around the shack.  Although you can get by with just a vertical element and a "counterpoise" wire lying on the ground, you will get better performance if you use several elevated radials below the base of the vertical element.  I have a 40 meter version of Dave's antenna which is erected in the backyard of my one-acre property.  I used a 33-ft/10.06 meters MFJ telescoping fiberglass pole, 32-ft/9.75 meters of #18 gauge speaker wire from Radio Shack for the vertical element, and 4 elevated radials measuring 32-ft/9.75 meters each, raised about a foot/0.30 meters above ground.  The antenna works very well.  If I change the coaxial feedline to 450 ohm ladder line and use a 4:1 balun connected to my antenna "tuner", I can get continuous coverage between 40 and 10 meters.  Dave's project would make an excellent emergency, portable, or field day antenna.

For the latest Amateur Radio news and events, please check out the blog sidebars. These news feeds are updated daily.

Aloha es 73 de Russ (KH6JRM).