John Doe wrote:
1 more question - Instead of using either the fixed 160m stick w/whip
(stinger), or the 30 - 40 ft of wire, what do you think about using a
Screwdriver Antenna at the top of the tree and running either a counterpoise
or radials??

The screwdriver coil can certainly be used in the middle
of the 40 foot vertical wire to tune the system to resonance.
Bury some radials and you are in business.
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73, Cecil http://www.w5dxp.com