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Author Topic: 2 meter beam & 440 beam on same tower-distance  (Read 413 times)
KG4GZW
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Posts: 9




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« on: July 14, 2003, 08:49:43 AM »

I have a 2 meter 4 element beam presently on tower,about to place a 440 6 element beam on same tower ,what is the closest distance both can be placed without causing interference to the other.  
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WB2WIK
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Posts: 20635




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« Reply #1 on: July 14, 2003, 11:47:10 AM »

You didn't say if they are horizontally polarized or vertically polarized, and it makes a lot of difference.

2m and 70cm horizontally polarized yagis may be installed about 40" apart for no interaction at all; however, 2m and 70cm vertically polarized antennas must be installed farther apart than that, unless you can end-mount each yagi and aim them in opposite directions (with the supporting mast "behind" each one), in which case you can mount them at the same point on the mast and they will not interact at all.

WB2WIK/6
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