George Murphy is a retired Canadian industrial designer and professional musician with no vocational RF engineering experience. Licenced as VE3ERP in 1961, his Amateur Radio hobby has led to his writing many articles for international Amateur Radio publications since 1985 and worldwide free distribution of his HamCalc software since 1993.

Robert Dehoney,IEEE, is a retired American professional electrical engineer who worked for a defense company developing HF, VHF and UHF systems, enjoys analyzing and constructing useful circuits and has authored papers for RF Design Magazine.