[TowerTalk] 10 throu 20 beam traps or no traps

[Tom Osborne]

I actually had a  Gotham 10/15/20 meter quad up for quite a while. It 
worked very good for me.  I had it on a 30 telescoping mast and a bad 
windstorm took it down after about 4 years.

I know everyone says Gotham antennas were junk - may have been, but I 
had a ball with it and think it cost me about $50.  Lotta bang for the 
buck!  73
Tom W7WHY





On 6/20/2014 2:22 PM, n0tt1 at juno.com wrote:
> I once had a 4el 20-15-10 homebrew Quad, built from
> a QST article back in the early 70's/late 60's.  It was a
> real performer.  (Yeah, yeah subjective, etc etc.)  The
> only problems were that I didn't use large enough
> AL tubing for the spreaders (1" irrigation) and not
> large enough solid copper wire (#14).  All on a 3" AL
> boom.  The spreaders were broken up with Delrin
> insulators.
>
> Yes!  I had a tilt-over tower and a 10ft step ladder for
> maintenance.  Still have those.
>
> I took it down in 1983 after a severe ice storm and replaced
> it with a TH7DXX which is still up.  No issues except that the
> 20m section resonates up in the phone band with 1:1 SWR
> and I don't use phone if I can avoid it.
>
> If I decide to build another quad, I would use something like 1.5" tubes
> to start off with and #12 copper-weld wire and use solid HDPE
> for the insulators, drilling tiny holes in the AL tubes where needed
> to allow condensate to drain.
>
> 73,
> Charlie, N0TT