Good source of 2.4GHz directional antenna?

[Haydn Lowe]

Thanks John,

Yeah Jason's design is great! I made a couple of these no worries. Maybe a bit 
big for what I'm after. I haven't really had a chance to test them out 
thoroughly though - the 150mm PVC for weather proofing makes it pretty big (and 
$$ for big pvc bits) - any ideas on how you could weather proof it differently?

At the moment I've made stand alone biquads (Trevor Marshall et al) - which are 
really nice and compact (and the parts are all really easy to source) - they 
work fine for 800m but they're not really focussed, so I think I'll need 
something which has a narrower beam to go 2 or 6 km... like the helicals, or 
hills vagi, or a dish.

Just to diverge again - any ideas of a good box to weather proof a biquad 
antenna (A cheap container which is going to last) I'm using a woolworths 
tupperware container with rubber seals - $4, but not UV resistant - maybe I 
could coat it, or paint it for UV protection?

Haydn 

Quoting John Dalton <john.dalton at bigfoot.com>:

> > I'm looking for something cheap I'd even MAKE it so long as it's simple,
> quick 
> > to build, and robust/weatherproof.
> 
> I guess you've seen Jason Hecker's DIY Helical Antenna?
> 
> http://www.wireless.org.au/~jhecker/
> 
> It's designed to have a gain of approximately 20dB.
> 
> (Think he might even live in the ACT???)
> 
> John
>