Western Electric Rack #3 June 23, 2014 360 × 480 Western Electric Rack #3 Western Electric Rack #3 Power amplifier and output network for the automated telegraph transmitter. Underneath is the 130 volt rectifier for the plate voltage of the Western Electric Tubes. Share this:Click to print (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Tumblr (Opens in new window)