![]() ![]() Here is a circuit that will resonate a short whip antenna for the HF Bands. The power supply AC power cord is stowed using a similar strap method as the HF mic, except it is in the rear case lid. We recommend you to use a quarter-inch fiberglass pole but really, any of them will work just fine. Whichever you choose, make sure that it’s sturdy enough to withstand a strong breeze. The lid has enough depth that the mic can fit without contacting the front of the power supply. That shields everything and makes a complete RF tight enclosure. The materials required to make a homemade CB antenna are as follows: One 55-58 inch non-conductive rod This could be made of wood, aluminum, or PVC. This homebrewed antenna tuning unit also incorporates a 50-ohm QRP dummy load, power meter (1 or 10 Watts full scale), and SWR meterĪ 10 to 80 meters band qrp antenna tuner by KC8AON, based on Steve Weber, KD1JV "ALT or Altoids L Tuner" The HF radio’s mic is stowed using velcro and a strap to the inside of the front case lid. ![]() This antenna tuner is a multi-type matching system in the same box, which includes L - Pi and T networks. This small tuner by KC8AON has only 2 controls and will tune almost anything from 10 to 80Ī small antenna tuner for the Yaesu FT-817Īntenna Tuner operation, correct way to tune an antenna. The Ultimate Transmatch was described in the "Beginner and Novice" section of the July 1970 QST (). This homebrew legal-limit antenna tuner is based on the famous "Ultimate Transmatch" introduced by the late Lew McCoy, W1ICP. Interesting project to remotely control, using a servo control circuit, a common commercial antenna tuner by N30X Get maximum power to your antenna by learning how to hook up and use a tunner to properly "trick" your rig KC8AON mini antenna tuner that tunes almost any antenna you connect to ![]() Includes circuit diagrams pictures and test results by GW4ALG Ideally, the wire should be 50 feet (15.2 m) long, but if you don’t have that much, you can use as little as 15 or 20 feet (4.6 or 6.1 m). It was a fun build and complemented my solar power in an ammo can project Ill post later. A pdf document from a QST article made available for novices and beginners by ARRLĪ small HF antenna tuner project for qrp operations. The antenna is one of the simplest parts of a homemade radio: all you need is a long piece of wire. The published version of this article appeared in the February 1990 issue of QST Magazine It all depends on the type of antenna and feed line you're using. ![]()
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