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Author Topic: Stacking 6 meters with HF  (Read 300 times)
XE1VE3OQC
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Posts: 20




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« on: August 08, 2006, 03:52:05 PM »

I have a general question for everyone out there.
I have a 617-6B 6 meter yagi at the top of my tower, what I would like to do is place my 8 element log periodic below the 6 meter antenna.
What is the minimum/average distance to stack these antennas without interaction to the 6 meter antenna?

I have gone through all of the antenna books and there is no helpful information.

Any responses to this problem would be helpful.

Glenn,XE1/VE3OQC
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AA4PB
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Posts: 12836




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« Reply #1 on: August 08, 2006, 04:21:11 PM »

The general "rule of thumb" is 1/2 wavelength of the highest frequency antenna.
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KA5ROW
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Posts: 500


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« Reply #2 on: August 08, 2006, 06:34:49 PM »

I have a 19 el 2 Meter, a 5 el 6 Meter, and a 5 el Tri-band. Each antenna has about 4 ft spacing above the other. I have no problems with SWR and I always get good reports, you can see pictures of them at ka5row.com
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KB4QAA
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Posts: 2371




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« Reply #3 on: August 08, 2006, 07:52:52 PM »

yeah, 1/2 wavelength is the rule of thumb, so 3meters.   But you can probably shorten that up without problem.

73, bill
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WB2WIK
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Posts: 20595




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« Reply #4 on: August 08, 2006, 08:36:41 PM »

9.5 feet, which is 1/2 wave at 50 MHz, should work just fine.  That's exactly what I've done with my HF LPDA and M2 6m long boom beam.  If there's any interaction, I can't tell...

WB2WIK/6
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