Beam stacking

[Al n3izr]

Hello I want to stack a 2el 6meter and a 3el 10meter
beam. How far apart do they need to be?

 

[Robb]

~9 ft will do fine.

 

[Captain Kilowatt]

My six element 6m yagi was about four and a half feet (roughly a quarter wavelength on 6m) above my tribander and there were no issues. Technically it all depends on the size of the antenna's aperture being careful not to have the patterns overlap but unless you know that data you just have to space them as best as you can eithin reason. Some claim one half the boom length of the higher ffequency antenna but that can be waaaaay off in some cases.

 

[Al n3izr]

OK think I will use 5 to 6 foot here.
Now if only I can get my RFI from power lines
cleaned up all the way ?

 

[gt40425hp]

my only worry thay are harmonicly related if you can do 6 or more great . mine is 11 foot but i have a cross mast 8 foot wide with a 2 meter and a 70 cm between the them

 

[Captain Kilowatt]

Pretty hard to avoid harmonically related frequencies and antennas on the ham bands.