Monday, March 16, 2015

Simple Ham Radio Antennas: My Longwire Antenna Setup (from M0VST). Post #391.

If you have the space, a long-wire or random wire antenna, coupled with an antenna tuning unit (ATU) and a counterpoise wire system, can perform very well. In this video, M0VST explains how he built and used this simple antenna for his amateur radio station. He used 50 meters/164 feet of wire that came from the Clansman Radio System that was used by the British Army. The wire was supported about 7.62 meters/25 feet above ground and used an ATU and a counterpoise ground system to make the antenna work properly. His counterpoise system consisted of a 1.52 meters/5-foot copper ground rod attached to "lots and lots of ground radials." The key elements of the long-wire antenna are the antenna tuning unit and the counterpoise system. The counterpoise system will keep RF out of your shack. As for antenna tuners (ATUs), I used an old MFJ-902 Travel Tuner with good results. My "long-wire" antenna was cut for 40 meters (135-feet/41.5 meters). The #12 AWG wire was attached to my garage wall and was shot into the top branches of a Norfolk Pine Tree with a slingshot and a fishing sinker. The top end of the antenna wire was approximately 50-feet/15.24 meters above ground. Like M0VST, I used a counterpoise system to keep RF out of the shack. My ground radial system consisted of a 5-foot/1.52 meters copper clad steel ground rod and eight, 33-foot/10.06 meters long wire radials. The antenna worked very well from 40-10 meters. The antenna is still up and is used to monitor MW AM broadcast stations when I'm working in the shack. I still use the antenna on 40 meters every now and then. M0VST has a nice antenna and it works well for him. If you have difficulty viewing his excellent video, please type this link into your browser: 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 e-mail subscription or by tapping into the blog RSS feed. For more Amateur Radio news, please visit my news site at Thanks for joining me today! Aloha es 73 de Russ (KH6JRM). KH6JRM's Amateur Radio Antenna Topics.