Note
Radio, Apr 1934, p. 37. (specs)
Replaced by the 5C in 1934
McMurdo Silver, doing business as Silver-Marshall, began manufacturing radio components and a line of broadcast and shortwave receivers in the mid-1920s. He went on to design and produce top-of-the-line broadcast and shortwave receivers but suffered several business reorganizations and failures in the perilous economic climate of those times. He died by his own hand in 1948. The 5B was a band-switching, eight-tube superhet that covered 1.55–30 MHz.