Depending on the angle of your Vee you may not need any spreaders at all.
Just attach the 40M wires at center insulator, put an insulator on each end,
and then run a string to the end insulators of the 80M wire. The 40M wires
will hang down under the 80M wires.
You will have to play around with wire length. If 40M is resonating a bit
too high then just twist an inch or two of wire to the ends and let them
hang down. If resonance is too low you will need to cut a little bit off
each end.
You need to use a decent grade of string that will withstand UV and weather.
------------------ Wes Attaway (N5WA) ------------------
1138 Waters Edge Circle - Shreveport, LA 71106
318-797-4972 (office) - 318-393-3289 (cell)
Computer Consulting and Forensics
-------------- EnCase Certified Examiner ---------------
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Eric Dobrowansky K2WD
Sent: Monday, July 19, 2010 4:19 PM
To: towertalk@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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