All band Vertical Antenna
(click on image for larger size)
Remove coil and replace with new coil as shown in diagram.
This is a very simple modification and can be used on 80m, 40m, 20m, 10m, and 30m.
This antenna works very good on 80, 40, and 20m without any adjustment. If needed for other bands adjustment of the top wire is all that is necessary.
To fasten coil to conduit, drill hole next to brass screw. Feed wire through and fasten to nut on the inside of the conduit. Cover with protective coating.