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Showing posts with the label QRP Random Wire Tuner.

Simple Ham Radio Antennas--QRP Random Wire Tuner. Post #986.

QRP Random Wire Tuner (http://www.ad7c.com/projects/qrp-random-wire-tuner/). Author:  Rich (AD7C). Please insert title URL to read the full report and to view the accompanying video. Accessed on 20 December 2016, 04:45 hrs, UTC . Comment: Here's simple, small, and effective random wire antenna "tuner" for use in portable or emergency operations.  Rich (AD7C) provides ample documentation and photos of this well-made antenna accessory.  Most of the materials can be bought locally, except for the 12 position rotary switch which can be purchased through any of the many amateur radio supply outlets.  The rest of the "tuner" components are simple:  one air variable capacitor, some SO-239 connectors, and a metal watch case .  The coil consists of 22 gauge magnet wire wrapped around an empty 35 mm plastic film container.  Rich says the homemade "tuner" works well on 40 through 10 meters. Rich also offers a video of the "tuner" in action