[amsat-bb] Re: Yagi balance point
ko6th_greg at hotmail.com
Tue Nov 10 20:01:28 PST 2009
> ----- Original Message -----
> From: "David Wing" <david at cdwing.com>
> To: <amsat-bb at amsat.org>
> Sent: Tuesday, November 10, 2009 7:09 PM
> Subject: [amsat-bb] Yagi balance point
> > I have two yagis that I need to mount a little off center and wanted to
> > a little weight on the back of the antenna as a counter balance.
> > Assuming the counterbalance will need to go in front of the rearmost
> > reflector, does it matter if the counter balance is metallic (i.e. some
> > fishing weights)? Should I isolate it from the boom? Should I use
> > something ceramic instead?
> > 73
> > David
> > K6CDW
If you have the better part of an inch of boom sticking out behind the reflector, there should be ample metal to attach something off the end, maybe supported by a slightly smaller piece of tubing that just slips into the boom. After all, the farther back the weight is, the less of it you will need, and the less weight you will be adding to the overall structure.
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