Tuning the 10.7MHz Intermediate Frequency in Vacuum Tube FM Radios
Tuning the 10.7MHz Intermediate Frequency in Vacuum Tube ...

A crucial step in tuning vacuum tube FM radios is adjusting the 10.7MHz intermediate frequency (IF). Typically, this is done using a sweep generator. However, in the absence of a sweep generator, the following method allows for meticulous adjustment of the IF curve, achieving results closely approximating those obtained with a sweep generator.There is an example below for you information and learning by analogy.

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