For sale is reprint of Hammarlund HK-1B “personalized” Keyer. Manual is 10 pages long, Dated 1962.
“The Hammarlund Keyer HK1B is a compact, efficient transistor code generator with self contained battery power supply”. Manual sections include: Introduction, Modes of Operation, Adjustment, theory of Operation and part location/troubleshooting part list and circuit diagram. Manual includes change notice dated 9/27/62