[TowerTalk] TH-6

n4kg@juno.com n4kg@juno.com
Fri, 1 Feb 2002 00:58:08 -0600


DON'T  DO  IT.

Interlaced dual band antennas are VERY complex critters to
get working.  Did you notice the 7 10M elements on the C31XR?
It plays like a 4L 10.  The additional elements are needed to
decouple the 15 and 20 meter directors.

In a simplistic dual bander, the low frequency director acts
as a non-resonant REFLECTOR in FRONT of the high frequency
antenna.  Subtract 2 dB from your forward gain on the higher band.

Now if you wanted to take the BACK end of the TH6 and make
a 2L tribander, that would be a good idea.

Tom  N4KG

On Thu, 31 Jan 2002  "Joe Sloss" <sloss@mindspring.com> writes:
> 
> Has anyone had experience in modifying a TH6 to a 10-15 dual-band 
> antenna by
> removing the 15m traps and adding element extensions as necessary 
> for the
> previously trapped R, DE and D.  Results?.  Thanks Joe K7MKS
> 
> 
>
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