THURSTON ACKERMAN wrote in a message to ROY J. TELLASON:

 TA> I seem to recall that 24 volts is fairly common in aircraft (or
 TA> maybe was 50 years ago when I was doing radio installation and
 TA> maintance on military aircraft 8-); and possibly naval ships (I'll
 TA> have to try to remember to check with my navy veteran son).

I've got a 16mm gun camera from a Kittyhawk fighter plane that needs the
"odd" 24 volt supply.

Regards,
Peter 
--- timEd 1.10.y2k+