Here ya go Harley, here's the math behind the answer.....
View attachment 124770
View attachment 124771
That's the start of it, then you progress to
View attachment 124772
That will get you the 5th order harmonic, now you just have to reduce the variable "ph sin L-k cosL " by Riddecki's constant N times, where N is equal to the number of beers you have in the fridge, and ....Bob's yer uncle, there's the distance to separate the antennas.
Happy now?