An article in Radio Electronics magazine from November 1958 showed the construction of this tube audio oscillator. Note the use of lamps as a stabilizer to obtain better sinusoidal signals.
The circuit presented is quite simple, employing tone modulation of the signal. To receive the...
This fast-acting circuit was found in the July 1969 Radio Electronics magazine. The trigger point...
This preamp was found in an old English publication. Any usage JFET can be employed. The output is high...