[Milsurplus] Questions about the T-784 / GRC-109

[Hubert Miller]

I have a lone GRC-9 transmitter. Some questions i have about this:

  1.  the device just below the power cable on front panel left, what is it ? It looks like some sliding cover requires manipulation, or what ?
  2.  the brass tube in the cabinet, left side, is that a dessicant holder ?
  3.  The 4 larger screws in the four corners of the front panel, these are Philips of what size ? I am guessing the previous dimwit owner removed these 4,
found these didn't allow opening the set, and then of course, lost the screws.

Thanks !
-Hue Miller
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