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This page contains construction details on a 2 metre 144MHz VHF Yagi beam antenna, designed for portable use. Since an old 5 element version (v1) of my antenna was shown in the July 2011 edition of RadCom , a few people have contacted me asking for some information on how it was constructed.
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This page contains construction details on a 2 metre 144MHz VHF Yagi beam antenna, designed for portable use. It has successfully activated the following SOTA summits: G/LD-004 (Skiddaw), G/LD-021 (Robinson), G/LD-003 (Helvellyn), G/LD-001 (Scafell Pike) and G/LD-020 (Dale Head).
InnovAntennas provide Complete EME Antenna Systems including everything you need to be you active. Antennas, Splitters, cables, baluns, rear splitter mounts, rotators everything! Contact us by Email or phone with your system requirements and we will help you get the very best from your EME experience.
Submitted by Gary Ruehle. Drive around and find/collect old TV antennas that people are throwing away. My son and I built a dual 6 element stacked yagi for 2 mtr a couple of years ago. TV antennas were all the building materials we used. After the antenna was complete, we could hit 2 different repeaters about 60 mi away using a 1 watt handheld.
Ensure you have a good balun at the feedpoint of your Yagi to ensure your antenna pattern stays clean and symmetrical. The balun - What does it do? A balun is a matching device which takes an unbalanced input from your coax line and provides a balanced out for an antenna or balanced feedline.
A hairpin being used on a 2 element Yagi. We’d fit a 1:1 choke balun at the feed point to prevent common-mode currents. What does the hairpin match do? Simply put, the hairpin adds inductance across the feed-point and at the same time reduces the amount of reactance ‘X’.
Build a portable VHF yagi antenna for 2 meters. All you need is two rabbit ear antennas from Radio Shack, two CATV baluns, four feet of 3/4 CPVC pipe with one tee. The HB9CV-Beam is a 2-Element-Yagi with two driven elements and was introduced by Rudolf Baumgartner, HB9CV in the 1950ies.
