A shunt fed tower requires radials period. It cannot work without them! 73,
John, W4NU Sent from my iPhone > On Sep 15, 2018, at 1:55 PM, <[email protected]> > <[email protected]> wrote: > > It makes no difference how the tower is fed, a vertical antenna must have > radials of some kind to be effective. 73. . .Dave, W0FLS > > -----Original Message----- From: cfytech24x7 > Sent: Saturday, September 15, 2018 11:29 AM > To: [email protected] > Subject: Topband: Use shunt fed tower > > A shunt fed tower is a vertical antenna so it offers lowest take off angle. > Shunt feeding avoids need for radial field. 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 > > > > > Sent from my Galaxy Tab® A > _________________ > Topband Reflector Archives - http://www.contesting.com/_topband > _________________ > Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband
