General Meeting – September 2021 – Tri-Band VHF/UHF Antenna Design
Our guest speaker will be Dr. Ed Fong (WB6IQN). As many of you will remember from his presentation from Feb 2020, he is the inventor of the DBJ-1 and DBJ-2 antenna that were featured in the February 2003 and March 2007 QST. The DBJ-1 is a highly effective dual band VHF/UHF base station antenna and the DBJ-2 is the portable roll-up version. The DBJ-2 won the QST Plaque of the Month Award. Both of these antennas are featured in the ARRL VHF antenna Handbook and also in the ARRL Antenna Classic Handbook. There are over 35,000 of these antennas in use today and many of the RWK already have a DBJ-1 or DBJ-2 antenna. His most recent antenna is the TBJ-1 – a triband base antenna that was published in March 2017 QST. This antenna covers 2M/220 MHz/70cm in one 6ft ¾ inch PVC pipe and requires no radials.
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.
View the September Meeting Recording here.