2-9 MHz superhet SW receiver on 2,5 volt (schematic) скачать в хорошем качестве

2-9 MHz superhet SW receiver on 2,5 volt (schematic)

A simple SW receiver (tested). Important to tell: to get a variable tuning the coil from the VFO + the coil from the radio (HF) must be equipped with a variable capacitor from (say) 20-500 pF or 20-300 pF. Tuning on SW must be done with 2 variable capacitors. With other coils (MW) the radio is usable for MW (700 KHz-2 MHz, not tested but I am al;ways sure that it works). I made the circuit with slug tuning, though that is not very easy and also unstabile. Important: solder a 1000 uF capacitor parallel to the + and - to prevent parasitic oscillations. Watch the comment that I made to Esteban Pascazzi. Because he made the circuit in real. 29 nov 2018.. Much more info about my video's on my Channel Trailer    • Radiofun232 on YouTube, find working & tes...   My books are available on the Lulu website, search for author Ko Tilman.