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Post by lamplighter on May 29, 2009 11:11:22 GMT -5
I decided to do a primitive test on my guy wires to my 2 Element Quad.
Someone suggested the guy wires were too close to the beam, so . .
I hooked a CB up to one of the guy wires. Radio -- 50ohm jumper -- SWR meter -- 50ohm coax -- 75ohm section -- guy wire. Center coax lead to guy wire and coax shield to dangling wire for counter poise. I realize the 75ohm matching section changes the radio's read on the guy wire's resonance, but I wanted no harm to the little radio shack set.
I tested SWR at 1.8:1 on channel 20, and a 3.1:1 on ch 40 and 3.2:1 on ch 1.
I asked for a radio check on ch 19 and got the usual trucker's "Your radio's working" answer. I got a conversation on ch 31. It appears to be resonant close to my operating freq.
Where my guy wires tie to the mast brings them very close to the tip ends of my 2 el quad spreaders.
Is this, in your opinion, having a possible negative affect on my f/b and gain on the beam?
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Post by zman on May 30, 2009 11:15:34 GMT -5
Just make sure they are not a resonant lenth like 3' 6' 9' 12' and so on. When i had my moonraker 4 up on my 40' tower when I still lived at home i had my guy lines at odd lenths and never had any problems with F/B and SWRS.
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Post by lamplighter on May 30, 2009 19:14:54 GMT -5
Cool, zman. Will do. Thanks.
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