Antenna Tests at HARC Meeting

Antenna builders finished construction of their dual-band 2-m and 70-cm "aluminum-rod" J-pole antennas at the August 8th, 2015 club meeting. The previous weekend members Gregg McArthur, Lloyd Taylor, and Jon Titus completed cutting and threading the rods, and drilled and finished the angular mounting brackets. Gregg provided an MFJ antenna analyzer at our August 8th meeting so builders could fine tune their antennas. Tuning led to a 1:1 standing-wave ratio (SWR) at the center of each band. Experiments showed a 1:1.1 SWR at the 2-m band edges. Very good results for a home-brew antenna.

Mike McKay (KG7GIT) holds his 2-band J-pole antenna while Gregg McArthur (W7GEM) checks the SWR with an antenna analyzer during the technical session before the 10:00 AM regular meeting.

Mike McKay (KG7GIT) holds his 2-band J-pole antenna while Gregg McArthur (W7GEM) checks the SWR with an antenna analyzer during the technical session before the 10:00 AM regular meeting.

The club has parts for several additional antennas and charges $20 for the materials. Hams will find more antenna information, plans, and a bill of materials at http://nt1k.com/blog/2011/open-stub-j-pole-project-completed-many-times. People who build their own antenna can request help from club members, several of whom have antenna analyzers that measure SWR and other antenna characteristics. --Jon Titus, KZ1G

About Jon Titus

Jon Titus received his first amateur-radio license as WN2KCZ in 1963. He returned to the ham world in the late 1970's and now holds an Amateur Extra class license, KZ1G. Jon has college degrees in chemistry and has worked in the electronics industry for many years
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