This is a Preselector for SW receivers (diy hf preselector) circuit. The entry low capacitance of MOSFET modern, with two gates, will create negative inverse reaction through a uncoupled source ...

Does it make sense to resume shortwave (SW) radio broadcasts to Russia and Ukraine, decades after international SW broadcasters cut back their services and people turned to the internet for ...

The challenges of precision-tuning analog radios, plus the reliance of international shortwave broadcasters on switching between multiple frequencies and bands to reach global audiences 24/7, explains ...