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Old May 14th 04, 05:05 PM
Mark Keith
 
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(JGBOYLES) wrote in message
A .26 lambda vertical has about 50+j43 impedance, and the +j43 can be
cancelled with series 154pf at 24 MHZ. This is a common method of matching a
1/4 wave vertical to 50 ohms. Make it a little longer to look inductive,
50+jx, and cancel with a series cap.
According to all the theory I know on this stuff a 3/8 wave vertical will not
be as you describe.


It shouldn't be too far off. The usual method of tuning a 3/8 vertical
is also by using a series cap to tune out the reactance. Quite common
on 160m, etc where people run the "extended" inv L's that are 185-190
or so ft long. I've used them here, and with a series cap, the SWR was
quite low. The 3/8 impedance is higher than a 1/4 wave, but not enough
to really hurt things, or to make a l/c matching device needed. MK