What is the F/D ratio for the $69.95 Special dish.

[avenger]

Does anyone knows the F/D ratio for the $69.95 Special dish. I do not remember ever coming across that particular dimension or specification for the dish.

Thank You.
avenger.

 

[Magic Static]

F/D is 0.38 and the Focal Length is 682mm

 

[avenger]

F/D is 0.38 and the Focal Length is 682mm

Very helpful, and thank ou