This low noise preamplifier has a gain of 19 dB in the 30 MHz band. The circuit is from the 80s. Transistors are from the era, and equivalents can be used. The circuit consumption is 13 mA.
The circuit shown is a Pierce type oscillator and operates at the fundamental frequency of the...
This useful power supply was found in an 1985 Italian publication, but can still be assembled...
This circuit produces a signal at a frequency of 455 kHz, based on a ceramic resonator CSA455E, by...