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Tagged: 4:1

4 ratio 1

Qrp unun 3d

DIY / QRP Unun

D.I.Y QRP Unun

A basic PCB unun with a BNC connector for QRP operation, ideal for use with a Half-Wave End-Fed (HWEF) or long-wire antenna for HF bands. You can build a 1:1, 4:1, 9:1, or 49:1...