"Kash J. Rangan" writes:

Is it advisable to use a combination of Coax and a ladder line to feed a
simple horizontal multiband dipole antenna?

In my new QTH it would be very easy for me to get a short run of coax out of
my shack window but I would like to use a low loss ladder line for the main
run up to the antenna feed point. Is it OK to place a 4:1 balun just outside
of the window for the transition?

I use a combination of window line and coax for my 80m antenna. I
don't have enough space for a full size dipole, so I had to shorten it
somewhat. From memory, about 6m of window line makes up for about 3m
of missing wire on each dipole leg. Easier to do than loading coils,
that's why. EZNEC claims that losses are negligible, don't know if
that's really so or a transmission line model is inappropriate here.

Totally by accident, the antenna also ended up with a resonance in the
30m band.

Jon LA4RT, Trondheim, Norway