[TowerTalk] Parallel dipole construction questions

[Jim Chaggaris]

Eric,

I paralleled a 30M dipole to my 40M dipole last weekend using 1/2"D x 12"L PVC spreaders spaced about 5' or so along the span.  Works great. 

73,
Jim N9WW

James Chaggaris
President
PowerOne Corp./PowerOne Environmental
1020 Cedar Ave. Suite 203
St. Charles, IL 60174
Phn: 630-443-6500
Cell: 630-669-2241
Fax: 630-443-6505
Website: www.pwrone.com




-----Original Message-----
From: towertalk-bounces at contesting.com [mailto:towertalk-bounces at contesting.com] On Behalf Of Eric Dobrowansky K2WD
Sent: Monday, July 19, 2010 4:19 PM
To: towertalk at contesting.com
Subject: [TowerTalk] Parallel dipole construction questions





After deciding to discard my trusty old W2AU 40/80m trap dipole which finally failed (trap of balun, not sure yet), I constructed a new 80m inverted V last evening. Works great on 80m, but I would like to add 40m.   Can anyone recommend a good material and/or procedure for fabricating spreaders to parallel another wire alongside the current 60ft legs, so as to add a 40m length?   



The lighter the better, obviously.  I will be using 14ga strandedinsulated wire.  I was thinking maybe either plexiglass pieces, or maybe 1/2" conduit cut into short pieces, spaced every som many feet?  Can anyone speak from experience as to how far the 40m and 80m wires need to be spaced, and also how far between spreaders to keep the wires apart? 



Can anyone say how well the combined antenna will work as compared to two separate 40/80 dipoles? 



Thanks 

Eric 
K2CB 

Thanks 

Eric 
K2CB
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