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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> The
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