6088 tube as radio

Tube radio with 4 tubes, experimental, schematic comes later.

Leo and his guest talk about the early days of radio and the basics of the electronics of the era.

Schematic of the 4 tube radio, experimentally built in a way of the radio-pioneers (1910-1945). The radio acts as a cascade type receiver when the antenna coil has a high self-inductance, with lower self-inductances of the antenna coil you can put in a mixing process with the oscillator. Perhaps...

Experimental receiver for VLF. I received electromagnetic (radio) signals between 14 and 22 KHz with a capacitor of 4,7 NF over the showed coil. The schematic is identical to that of the storm detector IV (with the 6088 Tube), the coil is differently constructed. There is one more transistor...

PSK31 QSO on 40m using Digipan v20 Live video of part of a QSO on 40m using just 10 Watts at each end 100% copy over distances of c.1000Km is normal. First the complete GUI with the Multi QSO panel showing other QSO's. Then for clarity on YouTube a closer view.