Stable GPA. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Knots of amateur radio equipment. Generators, heterodynes
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The circuit has good stability in both frequency and signal amplitude. The generator itself is made on transistors VT1-VT2. On the transistor VT3 is a signal amplitude stabilizer. A buffer amplifier is made on VT4-VT5. The variable resistor regulates the amplitude of the output signal. The loop data is selected depending on the frequency range.
The installation was carried out on patches using Zhutyaev's technology. It is better, of course, to perform it on a ceramic panel with racks.
PS Personally, I have tested this circuit in the range from 5 to 24 MHz as a transceiver master oscillator. It should be noted that the shape of the output signal is distorted as the amplitude of the output signal decreases.
Author: Nikolay Bolshakov, rf.atnn.ru
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