"ml" wrote in message
...
In article , ml
wrote:

i was reading some technical spec's on a ladder line feed.

the numbers showed it had sorta hi swr around 5 yet the power loss was
really low for it's run, like about 2watts

this confuses me, i always thought that high swr automatically ment
'loss' so what is the piece i am missing?


even stranger was the same equation as above but run for coax, which had
lower swr but higher power lost, which i then attrib to something like
the resistane of the coax?


boy i am mixed up

hmm thanks to all that replyed, i guess i do understand what you
explaned, as it was straight fwd, but i am still feeling strange about
it, i'll run the numbers again, and if i don't 'see the light' perhaps
i can post it more specifically here again

guess the part that bothers me is having such a high swr in the ladder
and such a low loss, i followed mathmatically what youall said, that
adds up, but justt seems well i guess i just thought mentally that say a
5 or 6 swr had to mean some loss greaater than 4watts "100ft run
don't know why i thought that guess it depends "" on all the factors
you guys mentioned

cool thing we have modeling sofware


m

m

Do you have access to a ARRL habdbook?? I see a very informative graph
on page 16-14 of the 1990 ARRL handbook that clearly indicates how
transmission line loss and VSWR are related.

Jerry