Let me illustrate more about question 10.
What is the temperature range that your device will operate properly?
(Such as from -40 to +50 degree Celsius)
i cant directly answer that, as it depends on to many conditions
ie is it already on while moving to a cold environment? etc etc. if it was a single component in isolation then would be easier to answer, but as a complete system
the limits come down to the battery inside the gcs unit, and self heating.
ie
cpu max temp is 100c
RF front end is 85
PA is 90
battery 60
low temp wise, industry standards would say the min battery temp is 0c.