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

[Ken Gordon]

Hue:

Your question(s) are confusing. You mention the T-784/GRC-109 in the subject line above, 
yet say ",,,a lone GRC-9 transmitter..." in the text.

Which is it?

The only device "...just below the power cable on the front panel left..." on the T-784 is the 
pilot/tuning lamp. The top of the socket can be twisted closed to prevent any tight from it 
being seen by an enemy.

And there IS a "socket" in the T-784 for a dessicant cylinder. As I remember it, that is on the 
right side of the case, but I could be "misremembering"..

I have two T-784s here which I could dig out and examine for details.

And there are a total of 16 phillips-head screws holding the front panel of later models of the  
T-784 to its case, all of the same size, and there are no 4 "larger" ones in the corners,

The COVERS for earlier models of the radio do have 4 larger screws in them at the corners, 
in which case, the corner holes in the radio case are ARE larger.. Later models have "snap 
fasteners" to hold the cover onto the radio.

Breck's photos are for the later model T-784.

FYI, the covers for the T-784 had a gasket so designed that the radio could be buried or 
submerged safely.

So, again, which radio are you talking about?

You might post a photo of your radio to the forum for us to see.

Ken W7EKB

On 16 Mar 2025 at 1:33, Hubert Miller wrote:

> 
>     I have a lone GRC-9 transmitter. Some questions i have about this:
> *   the device just below the power cable on front panel left, what is
>     it ? It looks like some sliding cover requires manipulation, or
>     what ?
> *   the brass tube in the cabinet, left side, is that a dessicant
> holder 
>     ?
> *   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