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The iconic 1650-A RLC Bridge
The groundbreaking 1657 Digibridge

Welcome to GRWiki, a wiki for the community of General Radio enthusiasts.

The purpose of this website is to help people get information about classic equipment produced by the General Radio (GenRad) Company, a manufacturer of electronic test equipment in Massachusetts, U.S. from 1915 to 2001.

There is nothing for sale here.


To find what you need, you can browse the various tabs on the top of this Main Page where we list all GR product pages on this wiki, even if they are only placeholders at this time.

For a list of products for which we have full articles, please see Product Pages.


You don't need an account on this wiki if you just want to read pages and download files. If you want to add to GRWiki or improve existing GRWiki pages, please email the administrator for an account.