[TowerTalk] R7 Mounted ontop of a triband yagi

[Marc Tessier - VE3TES]

Hello group, this time I am looking for help about the mounting of my R7 above of my old Triband yagi, At present I have my R7 mounted on top of  a mast which extends out of the top of my tower by 7 feet, I would like to know if I were to mount my ATB-34 Cushcraft triband yagi will I need more than the 7 feet I have available at this time? I have looked thru the manuals for both antennas and there is no mention regarding a situation even similar to mine...

So in short what would you folks suggest I use as a spacing between the R7 and the ATB-34...

Regards,

Marc Tessier - VE3TES
ve3tes at cogeco.ca
http://home.cogeco.ca/~ve3tes/index.html