In article , Ian
Stirling writes
Malcolm Stewart wrote:
I'd like to try recording birdsong using a microphone at the focus of
parabolic reflector.
Currently, I'm having difficulty thinking of domestic items which I could
cannibalise for their parabolic shape. Any ideas would be welcome. Best
I've thought of so far is an old radiant heater with the cylindrical heating
element at the centre of a spun reflector.

Old (solid) satellite dish.


There are some plastic lightweight transparent dishes around., Have a
Google for them....

--
Tony Sayer