I recently powered up a General Radio model 275 piezo-electric oscillator, which according to General Radio information was introduced in 1924 as the first commercially available crystal oscillator. Right now I am using a type 376-L 1.000 MHz crystal in the oscillator. I am looking for a type 276, which was more the correct period crystal. I could use any frequency between 900 kHz and 2300 kHz as that is the tuning range of the plug-in tank coil I have. By the way, the output is approximately 300 Hz high.
Thanks, John WA4WDL _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
