> I'm thinking of using something like this as it would be very cheap to
> make and seems pretty basic yet strong. Does anyone have any other
> possible antennas that might be suitable? I've seen the Biquad. Anyone
> done any comparison of the two?
Lots of others about. For similar gain, you could do a cantenna or try
a reflector.
www.freeantennas.com
My over-engineered version:-
http://www.nodomainname.co.uk/parabolic/parabolic.htm
Pro: Doesn't need ferric chloride to etch the PCB
Con: Mine needs welding set instead!
David.