On 1/5/2012 8:35 AM, paul ecker wrote: > Have a LDG Z11Pro auto tuner at base of pine tree that vertical leg runs up. > 4:1 balun at base of vertical feeding RG-213 coax to shack.
I don't understand why the 4:1 balun, or the remoting the tuner to the base of the tree -- the feedpoint ought to be pretty close to 40-50 ohms as it is, and not terribly far from resonance, so the SWR with it feeding 50 ohm coax ought to be fairly low (less than 4:1). With this sort of condition, RG8 from the feedpoint to a tuner in the shack ought to provide a very low loss condition and handle legal ham power. As it is, that 4:1 impedance transformation is likely to be adding loss rather than reducing it. 73, Jim K9YC _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
