[ARC5] Unknown control box

Francesco Ledda frledda at att.net
Tue Jul 15 14:30:54 EDT 2014


DME means Distance Measuring Equipment, and it tied to the Nav function. Low, High is the power output control.  Nothing unusual with this control head. There are zillions similar to this, with the same knob configuration. 

Sent from my iPhone

> On Jul 15, 2014, at 11:56, "D. Platt" <jeepp at comcast.net> wrote:
> 
> In my humble opinion, its a control box, and probably a prototype at that.  The reason I say proto is that the function switch is not human engineered properly.  The knobs are way too close together and any ergo-engineer would handily reject the design.  The fact that DME is even mentioned is arguably for control purposes, only.  And, what does "DME off" mean?  Is it the R/T unit or the audio ident? The low/stby and hi refers to what?  Selectable low/high us usually relegated to the 75Mhz marker beacon receiver.  Now, it may well be that the concentric freq knobs are the wrong ones.  If smaller ones were used, maybe the selector switch would be OK?  Again, it screams out to be a proto box as it does not comply with any standard ARINC label or layout.
> 
> Jeep - K3HVG
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