While employed by the small San Francisco, California manufacturing firm of Heintz & Kaufmann, Bill Eitel (amateur radio call sign W6UF) and Jack McCullough (W6CHE) convinced company president Ralph Heintz (W6XBB) to allow them to develop a transmitting tube that could operate at lower voltages than those then available to the amateur radio market, such as the RCA 204A or the 852. Their effort was a success and resulted in production of the HK-354. Shortly after in 1934, Eitel and McCullough left H&K to form Eitel McCullough Corp. in San Bruno California.[1] The first product produced under the trade mark Eimac was the 150T power triode. The new company thrived during World War II by selling tubes to the U.S. military for use in radar equipment.[2]
Posted on: Mon, 04 Aug 2014 04:40:06 +0000
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