The ELECTRICAL spacing between antennas will be
different on EVERY band, as will the PHASING from
the feedlines (unless you use identical lengths).
IF you use identical feedlines, you can feed them IN PHASE
in a BROADSIDE configuration on 10 through 20 meters
(space them approximately 0.4 wavelengths on 20M which
will be 0.8 WL on 10M. This broadside configuration will
produce a figure 8 pattern from 14 through 28 MHz with
maximum gain on 15M, decreasing symmetrically above
and below 21 MHz.
The antennas will still be useful below 14 MHz but there
will not be much gain and the pattern will be oval.
de Tom N4KG
............................
BTW, it is helpful to include your CALLSIGN in your signature.
...............................................................................................................
On Sun, 19 Apr 1998 13:22:14 -0400 "Scandurra,Anthony"
<AnthonyScandurra@FirstUSA.com> writes:
>Does anyone have any experience on phasing multiband verticals such as
>the Cushcraft R7000, R6000, or HyGain DX-77 ? It would be interesting
>to
>see how well such a setup would operate in a contest situation. I
>realize such a system is incapable of the gain of a large rotatable
>array, but the idea of instant direction switching would seem ideal in
>a
>contest application. Any thoughts?
>
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