Hi Hue:

1. Antenna tuning lamp
2. maybe G1, vibrator?
3. Don't know
https://prc68.com/I/GRC109.shtml
-- 
Have Fun,

Brooke Clarke
https://www.PRC68.com
axioms:
1. The extent to which you can fix or improve something will be limited by how well you understand how it works.
2. Everybody, with no exceptions, holds false beliefs.
-------- Original Message --------
Date: Sun, 16 Mar 2025 01:33:58 +0000
From: Hubert Miller <[email protected]>
To: "[email protected]" <[email protected]>
Subject: [Milsurplus] Questions about the T-784 / GRC-109
Message-ID:
	<PH0PR20MB43741D34C7D0A1CFAAD559AFE4DC2@PH0PR20MB4374.namprd20.prod.outlook.com>
	
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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