Basic Radio is a free introductory textbook on electronics based on tubes. See the editorial for more information....

Frequency Stability

Author: J.B. Hoag

A low L/C ratio and a light load tend toward greater stability of the frequency of an oscillator. Also, it is desirable to use a comparatively high value grid leak and a relatively high plate voltage.

Temperature changes, because they take place slowly, cause the frequency to drift. Mechanical vibrations will cause the frequency to change at corresponding rates.

Last Update: 2009-11-01