View Source: 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|http://www.dorrough.com/dorrough/techdoc/user_guides/userguides2.html]
* [40-A|Upload:harold/Dorrough40a.pdf.pdf] Loudness Monitor.
* [40-A Tech Manual|Upload:harold/Tech Man 40A-85--2a-.pdf] - Also covers 40-B, 10-A(B), 12-A(B), 20-A(B), 21-A(B)
* [1200|Upload:harold/Tech Man Test Set 1200-89--1b-.pdf] Stereo Test Set.
* [DAP310|Upload:DorroughDap310.pdf] Discriminate Audio Processor. 1973
  * [Power Supply Update|Upload:DorroughDap310update.pdf] replaces diode reference with single chip regulator.
  * [1977 Manual|Upload:HaroldHallikainen/Dorrough%20DAP-310%20Manual.pdf], scanned by Mike Phillips. 16MB
  * [1978 Manual|Upload:harold/DorroughDap310_78.pdf]
* DAP610 Discriminate Audio Processor. 1982
  * [DAP610 Manual|Upload:harold/DorroughDap610.pdf]
  " [Upload:HaroldHallikainen/610A-thumbl.jpg]<br>
    Image from WA3VJB.   [Full Size|Upload:HaroldHallikainen/610A-Full.jpg]
* [Schematic PC Board #111-404-|Upload:harold/Schematic 40A-85--3a-.pdf]
* [Schematic Peak Hold Circuit PC Board 110-404-|Upload:harold/Peak-Hold Schematic-85--4a-.pdf]
* [Revised Meter Calibration Procedure (Series-1 Only!)|Upload:harold/Calibration Proc-Series1--85--5a-.pdf]
* [Schematic For PC Board 154-383-|Upload:harold/Schem PCBoard 154-383--92--7a-.pdf]
* [Instruction Manual Digital Loudness Meters Models 280 & 380 (Digital Reading Meters)|Upload:harold/Tech Man 280-380 Digital-92--8a-.pdf]
* [Schematic For PC Board 155-385-|Upload:harold/Schem PCB 155-385--92--9a-.pdf]
* [Technical Instruction Manual Dorrough Loudness Monitors Models 40-A, B, C2 ~ 10-A, B, C2 ~ 12-A, B, C2 ~ 20-A,B, C2 ~ 240-A, B, C-2 ~ 400-A, B, C2|Upload:harold/Tech Man Loud Mon All -95--10a-.pdf]
* [Technical Instruction Manual Dorrough Analog & Digital Audio Loudness Meters (Covers All Current Models December 16, 2002)|Upload:harold/Tech Man Loud Mon All-02--12a--3-.pdf]

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* [Schematics For PC Boards: 202-, 204-, 205, & 206|Upload:harold/Model-40 -version 5.pdf]
View Source: Dorrough Electronics

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