[amsat-bb] Help and advice needed
oh6kxl at sral.fi
Thu Jun 14 12:57:46 PDT 2007
I'm planning my station. I need some advice from more experienced
My rotator will be Yaesu G5500. 70cm antenna is 3m long helix and 2m
antenna wil be 2.4m long Wimo cross yagi phased for circular polarization.
I've planned to use 3m long glass fibre boom. Antennas will be attached
to boom ends. They sell a boom with 40mm diameter and 2mm wall thickness.
What kind of solutions you have to create more friction to the junction
between antenna boom clamps and boom? And another point is where G5500
boom clamps are attached to boom center. Should I cover those four
places with some metal strips?
And last. 70cm flexible feeder will be installed back of the helix plate
and then to the boom. 2m is a question. Should I run rg213 feeder via
yagi boom to the fibre glass boom? Or should I let rg213 feeder go to
the reflector end and make a loose loop towards to glass fibre boom?
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