[W8MWA] MWA March Meeting - Coaxial Dipole building

[Werntz, Carl]

Greetings all,


At the next MWA meeting on Tuesday 3/17/15 we will be doing a hands-on antenna construction project to build a 2m/440 sleeve- or coaxial-dipole vertical antenna.  This is the ideal antenna for temporary emergency operating.  It is very broadbanded, linear (no radials), small (about 40" high) and you can either hang it from a rope or put it up on a non-conductive pole.  This is the same antenna I presented about at the January meeting.


If you want to build an antenna I ask that you bring along your own coax and connector.  RG-58, -8x, or LMR-240 work fine.  I don't think heavier coax (RG-8 sized) would work.  I recommend a longer coax run (40-50 feet) so the antenna can be useful without needing additional coax.


If you want to put a ring on the top, please bring that as well.  A threaded eye bolt ((shaft not bigger than 3/16") with appropriate nut seems to work best).


I will bring the PVC pipe, pipe ends, radiating element tape, conductive tape, and tie-wraps.

I have attached a word document that describes the antenna.  FYI:  ASRC is the regional search and rescue conference

Hope to see you on Tuesday 3/16

Carl Werntz, D.O., MPH
Associate Professor, Clinical Emphasis
Director - Occupational Medicine Residency (Interim)
West Virginia University School of Medicine

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