Tag: common mode current
- Choosing a Balun: Current vs Voltage Types and 1:1, 4:1, 49:1 Ratios 2026-10-18 · Antennas & Propagation
The wrong balun distorts your pattern, puts RF on the feedline, and heats up in the shack. The short answer: use a current balun wherever you can.
- EFHW Antenna: One Wire, Five Bands, a Single Support Point 2026-10-18 · Antennas & Propagation
An end-fed half wave covers 40 through 10 meters from one anchor point. Here is how the 49:1 transformer works, how to tune it, and how to keep common-mode current out of the shack.