This 16dBi waveguide sector slot antenna is available in the UK. Produced by Poynting Antenna, it is very similar to Trevor Marshall's well-known design.
Very narrow vertical beamwidth and 80 degree azimuth makes this hi-gain antenna very directional and a superb choice for unusually long-distance links.
At this price, the complete, tuned antenna costs less than laser cutting the metalwork!
Designed specifically for long distance links, it features very narrow vertical beamwidth and is perfect for covering the length of a valley from an opposite hill for example.