[TowerTalk] Quagi Optimization

Pat Barthelow aa6eg at hotmail.com
Mon Feb 20 10:13:59 EST 2006

Sorry for the slightly off topic query, and please guide me to the best 
antenna discussion group....I am at a remote location, (Sierra Foothills 
above Auburn CA,) and built Wayne Oberbecks Late 70's version, 16 el Quagi 
for 440 to try to hit the hometown repeater, ( Monterey CA) some 160 miles 
away, driven with 5 watts.  I can hear the repeater sometimes,  but cant 
quite key it.
I want to know what the most sensitive dimensions are that affect gain.  My 
aluminum welding rod/wood boom/copper quad loop quagi, probably has some 
dimesnional inaccuracies of up to 1/2 ", probably the driven loop size or 
flatness, and some of the director element spacing  vary from the Oberbeck 
model, vary in spacing while lengths conform pretty tight.  They may also 
vary in perpendicularity to the boom  (some slightly bent, or not 90 deg  to 
the flat boom, so their tips may be out of whack, say by 1/2  to 3/4 
inch.... With only rough tools, what dimensions do I have to pay attention 
to most, to get the best gain out of this antenna?  How about  the not 
having a balun problem?
73, DX, de Pat AA6EG aa6eg at hotmail.coim

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