Yes,  I also assumed that having the lip of the pan facing up would not be 
good.  I mounted the antenna on the bottom of the pan.  In the center of the 
top of the pan (the side where the pizza would be) I glued a 5/8-11 nut.  This 
is the standard size used on most surveying instruments,  antennas,  and 
tripods.  I can't flip the thing over to test the difference the lip would make 
(but the pan was only $3 at Target).

For my next antenna test,  I also bought a cake pan.  I want to see what 
happens when you mount the patch inside the pan.  I want to try it both bare 
metal,  and with the inside of the pan laminated in carbon fiber.   The idea is 
the side of the pan will act as a poor man's choke ring and block signals from 
lower elevations.  The carbon fiber lining should help absorb reflections from 
the insides of the pan.

----------------------------------------
I have been thinking that maybe keeping the edge/ridge upwards may be a 
bad thing, so maybe flipp it over and see what ridge downards is better?
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