The May 1962 issue of Electronics Illustrated showed this smart-looking regenerative receiver kit from Allied, the Knight Kit “DX’er”, a three-transistor regenerative receiver for the broadcast band and one shortwave band. It operated with four penlight cells, and Allied touted the receiver as ideal for the fallout shelter.
It does seem like an ideal choice. The set undoubtedly had a low current drain, and with a few extra sets of batteries stored away, it would probably be a good source of information for the duration of the stay. The standard broadcast band could be used to pull in the local CONELRAD station, and the shortwaves would probably give some indication of what was going on in the outside world.
According to the magazine, the kit sold for $19.95, but in the 1963 Allied catalog, the price had been reduced to $14.95.