Allied Radio catalog 1971 (copyright 1970), p. 210.
419, for 12 VDC
420, for 120 VAC
One of a number of amplifiers sold in the 1960s and early 70s, ostensibly for 10 meters or the "business band," but clearly with the CB market in mind. And to make sure CB users got the point, many of the ads said the amplifiers were illegal to use on the Citizens Band.
