Alcatel Canada Inc 39T07A01B22B External Photos

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Note:
The OEM supplier M/A-Com provides two designs of external casing.
Pictures 1 to 3 are design 1, and Picture 4 is the design 2.
The thermal resistance with a solar load of 
design 1
 is 1.50 C/W.  
And the thermal resistance with a solar load of 
design 2
 is 1.24 C/W, representing a
0.26 C/W improvement.
By engineering judgement, the frequency stability test was performed with the
casing as design 1, which we believe it has the worse test result. 
1.
Design 1