Dorrough Electronics
Dorrough Electronics
http://www.dorrough.com - Dorrough website.
https://www.dorrough.com/Usermanuals2.html - Manual archive.
Dorrough Legacy Product Documentation
DAP310 Discriminate Audio Processor. 1973
Power Supply Update replaces diode reference with single chip regulator.
1977 Manual, scanned by Mike Phillips. 16MB
DAP610 Discriminate Audio Processor. 1982
"
Image from WA3VJB.
Full Size
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