Dorrough Electronics
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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.
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