[GreenKeys] Army film featiring teletypes

[Jim Haynes]

On Tue, 17 Aug 2021, John, W9DDD wrote:

> I don't recall ever seeing any reference to multiple MXD wider than 3. At 
> 5:35, it sure looks like a gang of 6, or maybe it's just cabinetry to enclose 
> 2 sets of 3?
>
I've never seen one in the flesh, but there were definitely 6-headed
MXDs made.  I've seen pictures in, for example, a Postal Telegraph
switching center where they were used.