In article ,
Cecil Moore wrote:

ml wrote:
Ihave sgc 237 going into about 5ft of ladder line (mounted at base of
mast) to a horiz ctr feed dipole
'
it measures about 20ft 7" rf 'hot' side and 33' 7" rf gnd side

You have reasonable feedpoint impedances for 30m-10m
that the tuner should be able to match. Below 8.6 MHz,
the mismatch starts to climb. It's not bad on 40m but
very bad on 80m. So you have a reasonable setup for
40m-10m, pretty poor for 80m.

thank you very much Cecil. I guess thats all do to the small size
(antenna ))

i really need to add some length to improve 80m and 160 i can do it
but not in a straight line,

at the end i'd hve to make a turn and go down the other side of roof
guess i'td end up sorta looking like a big fat square U shape thingy


greatful for the help

QUESTION:

if i swapped the hot w/the rf gnd effectively making
33.7hot 20f.7 gnd would that be better??

i make the gnd longer as it said to in the sgc manual


thanks again


m