Tim Shoppa wrote:

Hi,

I think you left out the losses in the balun. With a kilowatt even a
large (by ham standards) balun will get very warm if you leave the key
down... my guess is it's not quite as much as you're saving but
comparable. It all amounts to 10%, and that's such a tiny fraction of
a S-unit.

The other side probably wouldn`notice the difference.

Now, if your antenna were an incredible mismatch to coax to begin
with, then ladder line makes good sense. Say you want to use your same
inv-V on 40M, then you'd run ladder line all the way to your tuner and
be in fat city.

I would not take TV ladderline if you have a high standing wave ratio,
and this will happen if you use the dipol for multiband purpose.
I`ve tested a dipol with about 20 m length (67 ft) for 80m.
At first I got almost the same s-meter report compared with a W3DZZ trap
dipol. But after a couple of month I noticed that the received signal
was up to 20 db down compared with the trap dipol. I only used 100 watts
but it broke the TV ladder line. Here I`ve learned what has happened:

http://www.w8ji.com/vswr_reactive_power.htm

I`m planning to build a new antenna with self built ladderline for
multiband purposes for one of the traps of my W3DZZ is broken. I´ve only
bought the spacers for the new ladder line.
--
73
DJ4PB