The Hammarlund SP-100 series was in production for about two years and nine months. Though the list price was over $400, most dealers sold the SP-110X (ten inch speaker included) for around $250. Total number of SP-100 Super-Pros produced was probably around 1000 receivers.
Hammarlund SP-100 "MRM-5": 0.2-0-4 / 0.54-10 MHz, AM/CW, 1937-193x
SP-100: 0.54-20 MHz, AM/CW, 1937-193x
SP-100L: 0.1-0.4 / 2.5-20 MHz, AM/CW, 1937-193x
SP-100LX: 0.1-0.4 / 2.5-20 MHz, AM/CW, 1937-193x
SP-100S: 1.25-40 MHz, AM/CW, 1937-193x
SP-100SX: 1.25-40 MHz, AM/CW, 1937-193x
SP-100X: 0.54-20 MHz, AM/CW, 1937-193x
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