To me, this means a large parabolic reflector, a feed horn made of brass ... As a test, I decided to 3D print a small model of this dish. In creating this model, I inadvertently created the ...

and exported as a 3D printable object. This project was originally just a test to see how I could build a large, easily transportable parabolic reflector. This demands a few design considerations.

Parabolic space heaters are a type of infrared heater that use a parabolic reflector to aim the heat in a concentrated beam.

This focussing effect is very strong with WAVELENGTHs less than the aperture of the reflector, making it particularly suitable for recording high frequency sounds such as birdsong. Schematic diagram ...