@cs777
I am using my retired RPi B+ for testing software. It is located in a room where signal is not as good as where my main receiver and Cantenna are located.
For my test receiver’s antenna, I made a Cantenna with an un-cut food-can (easier, no cutting of cylinderical wall, only drilling a hole in the bottom).
The food can is 2-11/16 inches dia x 3 inches height (7 US fl. oz).
In metric units, it is about 68mm dia x 76mm height (205 mL). If measured with rims, it is about 70mm dia x 80 mm height.
Every antenna’s performance heavily depends on its location. I therefore cannot say how the un-cut food-can Cantenna compares with optimally-cut drink-can Cantenna. Since the Cantenna is very tolerant to dimensional variations, I feel the difference will be slight.
This weekend I will replace the drink-can Cantenna of my main receiver by food-can Cantenna to find out the difference.
