75 ohm coax
1/4 Wavelength of Coax
With A Velocity Factor of 78%
Note length shown for center of Band

10 Meters 6 Ft. 8 3/4″——— (205.105) CM
12 Meters 7 Ft. 8 1/4″——— (234.315) CM
15 Meters 9 Ft. 0″————– (274.320) CM
17 Meters 10 Ft. 7″———— (322.580) CM
20 Meters 13Ft. 6″————- (411.480) CM
30 Meters 19 Ft. 2″———— (584.200) CM
40 Meters 26 Ft. 8 3/4″——- (814.050) CM
80 Meters 51 Ft. 1 3/4″—— (1558.925) CM
160 Meters 102 Ft. 2 1/2″— (3115.310) CM

1/4 Wavelength of Coax
With A Velocity Factor of 66%
Note length shown for center of Band

10 Meters 5 Ft. 8″——-(172.720) CM
12 Meters 6 Ft. 6″——-(198.120) CM
15 Meters 7 Ft 7″——–(231.140) CM
17 Meters 8 Ft. 11″——(271.780) CM
20 Meters 11 Ft. 5″——(347.980) CM
30 Meters 17 Ft. 0″——(518.160) CM
40 Meters 22 Ft. 8″——(690.880) CM
80 Meters 45 Ft. 4″——(1381.760) CM
160 Meters 90 Ft. 8″—–(2763.520) CM