>
> My solution to the changes-VF-over-time problem in a crossfire phased
> system is: To first use equal lengths of it from each Beverage to
> reach a common point ahead of the un-un. (Change of VF in these
> sections will not matter, since both pieces are the same length of
> the same cable, cut from the same spool. Both pieces will remain the
> same electrical length as their VF changes identically.) Then, to
> add the phasing line to the line from the rear staggered Beverage as
> a separate piece of cable. This way the section of line being used
> to achieve the proper phasing angle of the two antennas can be
> disconnected periodically, it's VF checked, and be replaced if need
> be. This would also allow the null to be easily moved for any other
> Charles - K5ZK
Or you could use a pi network as a lumped delay in place of the separate
piece of cable. Then you don't have to worry about cable aging at
all.
Rick N6RK
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