The R-808, is an extremely rugged receiver of the same vintage as the R-392. Made by Federal (and perhaps others), it runs on 120V AC or 28V DC, has built in TTY convertor, and uses harmonically related bands to tune from 2 to 32 MHz.
Like the R-392, it is heavy, green, and will survive direct hits from
anything short of armor-piercing rounds. The power and audio
connectors look very similar to those on the R-392.