......scanned from an ancient Hammarlund sales brochure...
HK-1B keyer built by Hammarlund in 1966.
The unit is visible on the right side of the photograph and is the only purely solid-state gear in the shack with four 2N404 transistors that originally were Industro TR-901s. The HK-1B is also the youngest equipment (other than a modern SWR/Watt meter) in the shack.
The HK-1B is keyed with a Vibroplex paddle.
See the qsl.net site for additional information on the HK-1B keyer.
http://www.frobenius.com/hk1b.htm -- Last Revision: 01 January 2011
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