It takes a month of Sundays for an expert to enter and interpret the
input/output data of a cage dipole using an Eznec-type program.

The basic characteristics of a cage dipole can be displayed, in
practical terms, in a few seconds by downloading program DIPCAGE2 from
website below.

Vary length and diameter, number and gauge of wires in cage, etc., and
observe how resonant length, bandwidth and SWR change.

Program DIPCAGE2. Its about 1/2-way down the list. Been there for
years!
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Regards from Reg, G4FGQ
For Free Radio Design Software go to
http://www.btinternet.com/~g4fgq.regp
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