A set of ham radio equipment was made by the Collins Radio Company in the 1950s that was nicknamed the "Gold Dust Twins" comprising the 75A-4 receiver and KWS-1 transmitter, which together at the time cost over $2500 ($ in dollars) when new. Collins products were considered top-of-the-line. Ham radio enthusiasts nicknamed the pair the Gold Dust Twins, as they had not been affordable to most amateur radio enthusiasts when first introduced.
