I wonder if u could help me, i have a tri-band beam erected and am
considering using 450 ohm feeder due to the less amount of loss on the
line (as opposed to RG58)

The radio i am using is an IC-756PROII, with inbuilt ATU, will i be
able to connect the feeder direct to the beam and run it straight into
the back of my 756 (using 259 connector) ??

Or will i requir a balun at either the beam or radio end???

hope you can shed some light on this as I have got a bit confused with
it.

thanks in advance.

Stephen Catterall

VK3SC