[time-nuts] Info on General Radio 275, 276, 375, & 376
jmfranke at cox.net
Sat Jul 3 19:21:49 EDT 2010
I am in the early stage of writing a history of the General Radio model 275 crystal (piezoelectric) oscillator. I have one complete 275, and parts to a second. The 275 was the first commercially available crystal oscillator. I hope to restore both 275s to operation. The paper will also cover the model 375 station monitor which followed the 275 and used the same oscillator. I have most of a 375, which I will soon begin restoration. I am interested in any pieces of hardware, including models 276 and 376 Quartz Plates, and any documentation (or copies thereof) including the relevant portions of the General Radio E and F catalogs.
John M. Franke
1500 Ibis Ct.
Portsmouth, VA 23703
757 465 1204
More information about the time-nuts