Andy G4JNT Andy, why don't you try Messrs Hately/Khabbary? Seems they're the only ones who REALLY understand what radio propagation's all about - see their latest ad in "Radcom"......................
Hi Andy, I can manage the maths, although the arithmetic always seems to go wrong, but not being a radio engineer, the formulae are not very familiar. Can you point me to a good source. John, G4CNN O
Obviously not 1/R^6 roll off then !!! Looking at the figures for 1km and 2km it appears to be more like 1/R^2 which is the rate of the radiation field decay - surely the H field should fall off faste