[TowerTalk] Phasing Muli-Band Verticals

[K6QD]

I want to phase two HF-9V multi-band verticals and operate on all bands (80-10) that these antennas cover.  I am severely limited by HOA restrictions and the antennas would be hidden when spaced ~130'. They would be mounted 15' off the ground with sloping radials.  I have read everything I can find on this subject and most of the literature addresses only 1/4 & 1/2-wave spacing.  The Hy-Gain report is interesting but it is also focused on the shorter ~66' spacing.  I have used a single HF-9V for years with "typical" success.  Any help with this issue will be appreciated.  Tks es 73, Mike