For sale is reprint of Hammarlund HQ-120-X Communications Receiver Manual. This receiver cover 540kHz to 31MHz.
Sections on Circuit Arrangement, Construction Details, Operation, Realignment Procedure and Maintenance. 2 Page detailed part list and 11×17″ enlarged circuit diagram. HQ-120-X was in production from 1939 to 1944, Manual has no date on it but it must be from that time period. Must if you own this rare receiver.