Joe, WA8OGS email: gojoe55@gmail.com 21 March, 2019 Build-It #1 Survey ResultsBalun Overview, and testing baluns (Mike, W8RKO)4 April, 2019 Driven Element Options for VHF/UHF Yagis (Joe, WA8OGS)18 April, 2019 Selecting Your Build-It Yagi (Joe, WA8OGS)May 2, 2019 Building VHF Yagi - Materials Handout (2 pages)Antenna Modeling Software (Mike. W8RKO)June 6, 2019 References for Antenna Modeling SoftwareStart Building - Hands On (group)Click to download presentation Tuning & Testing Your Yagi (Tom, N8ZM & group)Click to download presentation Antenna Gain Measurement (Tom, N8ZM, & group)[maybe Saturday, 10am - 2pm; include lunch?] Click to download presentation The following links open in new tab: Antenna Designs, Construction, and More: http://dg7ybn.de/index.htm Yagi Antenna Designs: https://g0ksc.co.uk DUBUS Links: http://www.ifwtech.co.uk/g3sek/diy-yagi/index.htm Yagi Calculator for DL6WU style yagis for VHF/UHF (2015): http://www.vk5dj.com/yagi.html "Yagi Antenna Design", by Jim Lawson, W2PV -- No link, this is a textbook to purchase. "Physical Design of Yagi Antennas": http://www.realhamradio.com/Download.htm Yagi Antenna Desigh NBS Technical Note 688: https://tf.nist.gov/general/pdf/451.pdf Some Yagi Building VideosKD4MXA - Building a six meter Yagi1.2 GHz YagiHomemade 70cm Yagi Beam Antennas - M0UKDHigh Gain TV YagiArticles on the web:Measuring Baluns (common mode): “A Ham’s Guide to RFI, Ferrites, Baluns, and Audio Interfacing”, Jim Brown, K9YC: (MUST READ!) http://audiosystemsgroup.com/RFI-Ham.pdf (updated January 2019) “Baluns: what they do and how they do it”, Roy Lewallen, W7EL: Also published in the ARRL Antenna Compendium, Vol. 1 Baluns: Good, Bad & Ugly Baluns 101: Learn just enough to be dangerous! Don’t wind chokes on RED toroids (powder Iron) by IZ2UUF “Measurement of Common Mode Chokes fabricated from Type 31 material toroid cores” G3TXQ's web page talks about common mode chokes and provides information as to why the chokes should be selected such that the "R" value is higher than the "X" value. He explains why. This explains how he calculated the values. YouTube Videos:These cover various topics on electronics and Ham Radio W2AEW https://www.youtube.com/user/w2aew Click on “Videos” on the menu line. There are around 300 videos. One of the best YouTube channels. TRX Bench Around 200 videos EEVBlog (out of Australia) Over 1100 videos. Does a lot of equipment teardowns and evaluations |
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