John Gabbard" <
[hidden email]> wrote :
>I am thinking of ordering the ATU for my K1 and I would like to know if
>there is an easy loading length of wire for 80-10 mtrs.?
John the secret is that you need to stay away from wire lengths that
are close to multiples of 1/2 wavelength on the amateur bands as
these lengths will pose a high impedance that may be difficult for
the KAT1 to match.
Luckly someone has already figured out what these "magic"
wire lengths are.
Alan Chester (G3CCB SK) recommended a 26.5 meter wire (86.94 ft)
for all band operation in his article "Taming the End-Fed Wire".
One other option is to try the W3EDP which is an 84ft wire with a
17ft elevated counterpoise for the low bands and 6.5ft long
counterpoise for 20M. See
http://www.g3ycc.karoo.net/w3edp.htmSo something in the 84 to 87 ft range should load nicely on all
bands.
Michael VE3WMB
P.S. Interestingly enough the 24 to 28 ft wire that Elecraft recommends
for the KX1 shows up on G3CCBs chart as a good length for matching on
40M, 30M and 20M.
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