PEN4D ️ Situs Tertua Di Indonesia Klaim Bonus Tanpa Ribet

pen4dThe Pen4DD is from the early mains-valve era. As a double diode output pentode it was to perform the function of snal detection, AGC detection, and audio output.The Pen4DD is from the early mains-valve era. As a double diode output pentode it was to perform the function of snal detection, AGC detection, and audio output.