Our guest speaker for the July meeting will be Ed Fong (WB6IQN). His talk this month will be the DBJ-UHF 5dB gain base antenna (US patent – 2,124,424). This antenna was featured in CQ Magazine in Summer of 2012. The DBJ-GMRS is a highly effective 5dB base antenna at only 37 inches tall and no radials. There have been over 8,000 sold since its introduction ten years ago. It requires no radials and is a DC shorted design so no lightning arrestor is needed.
Ed’s CQ Magazine article: https://files.k5rwk.net/s/cDDjfRJMgZLqJL3
Ed is also the inventor of the DBJ-1 and DBJ-2 antennas that were featured in the February 2003 and March 2007 QST. His most recent antenna was the TBJ-1 – a triband base antenna that was published in March 2017 QST (US patent 9,608,336). Ed will give a history on how these antennas were developed and the theory on how and why they work so well. There is no “black magic” to antennas. He will explain in a non-mathematical manner to convince you for overall performance and simplicity his approach is one of the most practical.