Have you touched base with Henry Hall? -ls-
"jmfranke" <jmfra...@cox.net> wrote: > 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. > > Sincerely, > > John WA4WDL > > > John M. Franke > 1500 Ibis Ct. > Portsmouth, VA 23703 > 757 465 1204 > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
