On Tue, 17 Feb 2004 15:19:12 -0800, Ron D'Eau Claire wrote: >For example, that 1/2 wave on 40 being used on 20 will show an SWR greater >than 100:1 for 50 or 75 ohm line! Even open wire is lossy at that SWR! So add a parallel dipole (or second dipole) for 20. It's two 16' pieces of wire. Again, see any version of the ARRL handbook for the last 50 years. Jim Brown K9YC