Dear Geoff, I think Rik is right about shunt-feeding the tower being extremely inefficient. The further up the tower the shunt feed is connected, the better it will be, but even if the connection is
Thankyou to M0BMU, RU6LA and ON7YD for your replies, which have provided me with enough information to dismiss shunt feeding. I have a sling shot which I can loop over an outcrop on the structure at
Dear Mike, LF group, I think the feed point impedance of the shunt-fed mast will be a fairly low inductance in series with a loss resistance of a few ohms due to the feed wire and mast - essentially