Stein Roar Brobakken wrote: > Hi > > I have plans to make a 4 to 6 element yagi for 20 or 40m since I have pretty > lot of aluminum tubes and parts in stock. > Get yourself a copy of 4nec or eznec and model it. NEC is really, really good at modeling Yagis. If you put in your dimensions, you'll be within tenths of a dB.