[Heathkit] Re: Broadband dipoles

[Robert & Linda McGraw (K4TAX)]

Yes, if they were erected such that there was little to no coupling between 
the two dipoles existed.  In practice it isn't advisable.  Otherwise, the 
interaction will not only cause very strange radiation patterns but also 
some very interesting and very reactive impedance bumps.  If one chooses to 
deal with these types of reactive loads, then a simple center fed wire with 
a balanced feed and associated tuner {matching network} is a much simpler 
and more effective choice.

Now, a very large cage type antenna, say one made of 6 to 8 wires and fed as 
though they were a dipole with common connection at the center and at the 
ends and having an effective diameter of some 8 to 15 inches will then be a 
nice broadband approach. Keeping these separate by use of spreaders plus the 
6 to 8 wires forming the cage becomes a challenge for winter ice, snow and 
wind.

73
Bob, K4TAX


----- Original Message ----- 
From: "john" <johnmb at nc.rr.com>
To: "Robert & Linda McGraw K4TAX" <RMcGraw at Blomand.Net>; "Mike McCarthy 
W1NR" <mike at w1nr.net>; <heathkit at mailman.qth.net>
Sent: Friday, November 24, 2006 5:28 PM
Subject: Broadband dipoles


> Wouldn't  parallel dipole elements, one cut for 75 one for 80. work ok?
>
> John K5MO
>
>
>
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