Heathkit HD-10 - Dot Generator Multivibrator

and
Operation
of the
ELECTRONIC KEYER
MODEL HD-10
HEATH COMPANY
BENTON HARBOR,
MICHIGAN
TABLE OF CONTENTS
Introduction. ......................
Parts List. ........................
Step-By-Step Assembly
I
........... Circuit Board Assembly.
........ Parts Mounting-Cabinet Top.
..............
Wiring-Cabinet Top.
........... Transistor Installation.
Key-Mechanical Assembly.
....... ,115
Switch Adjustment. .............
Final Wiring. .................
Right-Hand Operation. .............
Left-Hand Operation. .............
Initial Test And Adjustment. ..........
..................
Final Assembly.
Installation And Operation.
...........
In Case Of Difficulty. ...............
..............
Troubleshooting Chart.
Specifications.
....................
................
Circuit Description. 35
Circuit Board X-Ray Views.. ......... 41
....
...
Schematic. (fold-out from s age). 43