6 Best HF Antennas for 2025 to Boost Your Ham Radio Signal Anywhere Links to the best HF Antennas are listed down below: 6. Moonraker Ltd GPA-80 5. DX Engineering XB-5 Hexx Beam HF Antenna 4. Foul ...

Electrically small antennas (ESAs) are characterised by dimensions that are significantly smaller than the operational wavelength, which imposes stringent physical constraints on their bandwidth, ...