[ARC5] Unknown control box

D. Platt jeepp at comcast.net
Tue Jul 15 12:56:45 EDT 2014


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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