[AMRadio] OF memory erasure

[Donald Chester]

CL in NC <mjcal77 at yahoo.com wrote:
> "The EIA standard was revised again in 1992 to comply with the 1988 public law 100-418, 
> setting the standard U as 15.9 mm (0.626 in) + 15.9 mm (0.626 in) + 12.7 mm (0.500 in), 
> making each "U" 44.50 millimetres (1.752 in)."

I have found that not all rack panels in older equipment follow the same standard.  I acquired a pre-WWII Gates BC studio line amplifier, standard 19" panel width and what appeared to be standard panel  height.  When I tried to mount it in my standard relay rack, I found that the screw holes didn't line up.  The vertical spacing was different, and I had to ream out the holes slightly with a chainsaw file (through 3/16" steel panel) to allow the screws to fit.  It worked, but left a visible gap above or below the mounting screws that the screw-heads don't cover up.

Don k4kyv