[Antennas] Antenna Spacing Question

[Gary Smith]

Hello to all,

I have a 43' tall DX Engineering vertical installed at ground level in my yard with 40 x 40' long radials installed on the ground.  I am getting ready to install a hex beam on a military fiberglass mast.  The mast will be at least 50' high, so the beam and rotor will be above the top of the vertical.  I plan to use this same mast for installing a K9AY loop for 80 and 160 meters.  My question is this: how far does the new antenna mast need to be located away from the vertical so that it will not interfere with the performance of the vertical antenna, which will be used for 40, 80, and 160 meters only.

Thanks in advance for your input.

73,

Gary
WA1TJB