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.
--
73, Cecil http://www.qsl.net/w5dxp

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