Hi everyone, Here is a link to a great site that has a good calculator for making your own shorted dipoles: http://www.k7mem.150m.com/Electronic_Notebook/antennas/shortant.html The author explains all the parameters very well and its a well written tool. There are also calculators for VHF/UHF yagis (for antenna or EME work), designing air core inductors (useful for home brew and for the above shortened antennas), and building plate capacitors (for making the capacitor used in "magnetic" loop antennas). Ed KE5AYE