Hello Chuck, On Sat, Sep 15, 2018, 11:30 AM cfytech24x7 <[email protected]> wrote:
> A shunt fed tower is a vertical antenna so it offers lowest take off > angle. True. 160m is a band for vertical polarization if we want to work DX. See www.w0btu.com/160_meters.html . Shunt feeding avoids need for radial field. Sorry, that's just not true. A verical needs an RF ground, something to "push against". Scroll down this page to see why. w0btu.com/Optimum_number_of_ground_radials_vs_radial_length.html But the following is certainly true! :-) > Any horizontal wire antenna is going to put most of your radiated energy > out at high angles, unless you can get it at least a half wavelength of > height. A loop may be a quieter antenna for RX but your existing inverted > Vs are no doubt better for TX. > There is some art and experimentation involved in the matching but the > results will be worth the effort. I would start with your highest antenna > for top band, next highes for 80m. Note that your yagis will act nicely as > capacitive hats to add to effective tower hight. > Gl es 73, ab1vl chuck > 73, Mike www.w0btu.com _________________ Topband Reflector Archives - http://www.contesting.com/_topband
