High Quality Green Crystal Radio Receiver Benny Circuit DIY Passive Medium Wave Radio Receiving

High Quality Green Crystal Radio Receiver Benny Circuit DIY Passive Medium Wave Radio Receiving

First, adjust each switch knob to:
- Selective regulation: dual circuit
- Band adjustment: medium wave
- Ampere meter range: 100uA
- Various diodes: 2AP9
- Various field tubes: 3DQ
- Diode field transistor: diode
- Output conversion: direct connection
- Input conversion: direct connection
- Benny Circuit: 9
- If there is a medium wave radio in the local area, outdoor antenna and ground wire, you can listen to it by plugging in high impedance headphones.

Package Included:
- 1 x Crystal Radio