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Jano OM8AAK je autorom zaujímavého článku o PA , ktorý sa mu podarilo zostaviť za pár korún. Základom je hybridný PA Mitsubishi M6779H2, ktorý sa podarilo zakúpiť na burze za päťdesiat korún. PA dáva v pásme 70cm približne 20W výkonu.
After switching on, it is necessary to match c3-c7 at the input and at the output already for the reason that the integrated circuit is mainly intended for the frequency of 450-480 MHz. This setting adjusts its operating frequency downwards. It heats up especially during longer cranking.
If you need something more powerful and have more integrated circuits, go to the site https://www.QSL .net/dl4mea/70cmpa.htm.
73… OM8AAK