This is the Dorrough Section of
The Broadcast Archive

Maintained by:
Barry Mishkind - The Eclectic Engineer

 Dorrough Electronics

Woodland Hills, CA

In 1970 Mike Dorrough was building consoles in Los Angeles, when he had some help (no, it was not  his wife!) in developing his idea of multi-band audio processing for broadcast stations. Among other things, this led to the modulation wars of the late 1970s and 1980s as other manufacturers brought out processors with true limiters (instead of a cheap diode) and left the DAP as a "pre-processor" for many stations. 

Audio Processors

Click on picture for a larger image
         DAP 310 (1970)
  DAP 610
 

 

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Copyright 1993-2008, 2009  by Barry Mishkind. This material on this site should not be reproduced or reposted in whole or part without express approval.

It would be a kindness if you'd take a moment and let me know who you are and what interests you have. If you can share some information, or even a picture, that would be great! Just use the address below. Thanks. (Please note: Due to the huge amount of spam on the internet, it would be extremely helpful if you would use something like [Oldradio] in your subject line, so the filters don't get in the way.)

An important note about this resource:

We have used many sources, including FCC files, university lecturers, historical publications and more, and have tried to be as accurate as possible, not repeating many of the myths of the industry (such as the Uncle Don Story) nor histories "manufactured" by promotion departments. However, I am not perfect, and may well have overlooked something. If you do see an error or omission, please let me know.

The accuracy and expansion of this resource depend upon our SHARING our efforts.

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Want to know more about Oldradio.com?  

Or, just need to get BACK TO THE MAIN PAGE?

Thanks for visiting ... I hope you find the site interesting!

Copyright 1993-2011, 2012 by Barry Mishkind. This material on this site should not be reproduced or reposted in whole or part without express approval.

It would be a kindness if you'd take a moment and let me know who you are and what interests you have. If you can share some information, or even a picture, that would be great! Just use the address below. Thanks. (Please note: Due to the huge amount of spam on the internet, it would be extremely helpful if you would use something like [Oldradio] in your subject line, so the filters don't get in the way.)

An important note about this resource:

We have used many sources, including FCC files, university lecturers, historical publications and more, and have tried to be as accurate as possible, not repeating many of the myths of the industry (such as the Uncle Don Story) nor histories "manufactured" by promotion departments. However, I am not perfect, and may well have overlooked something. If you do see an error or omission, please let me know.

The accuracy and expansion of this resource depend upon our SHARING our efforts.

  • If you can help, please share your materials or information.
  • Due to the huge amount of spam on the Internet, please use something like [Oldradio] in your subject line. 

  • Thanks a megaWatt!