12-09-2016, 01:31 PM
Doug, I made a dual band vertical and mounted it on the shed roof (shed is 24ft x 40 ft, so its a big roof. Have not used it much but when the band is open it seems to work ok for me. The vertical was made as a aluminium tube for 18Mhz with a wire spaced approx 250 mm off the side for 24mhz. The wire connects to the bottom of the aluminium tube at the feed point.