As to the plastic vs metal...
I'm a strong advocate for shielding.? It does two things keep bad stuff in and band stuff out.
In the simplest form that is.
In too many cases in the field and even home a RF transparent case seem to be more prone
to RF issues especially with the antenna near by.? ?Adding even a metallic panel or partial
plate behind grounded to the electronics seem to tame those instances suggesting partial
shielding is often good enough.
An aside to this and related.? Most plastic cases that offered decent rigidity were as heavy
or heavier than metal and also required vents or fans to get the heat out where the metal
could be used to transfer heat.? That makes a difference when some level of water resistance
is desired short of a watertight sealed box.
Allison
