Bi-Square Antenna: A High-Gain design for upper HF and VHF

Bi-Square Antenna: A High-Gain design for upper HF and VHF: Build a high gain bi-square antenna for higher HF bands. Get 4dB gain over dipole on 10 meters with detailed calculations, matching solutions, operation tips.

Building HF Linear Push-Pull Amplifier with IRF510 MOSFETs

Building HF Linear Push-Pull Amplifier with IRF510 MOSFETs: Build a powerful HF Linear amplifier using IRF510 MOSFETs in push-pull configuration, covers complete circuit design, component selection, and practical tips