In a college-entrance-exam landscape long dominated by the SAT and the ACT, a relative newcomer has started to gain traction—especially in red states. The Classic Learning Test, first unveiled a ...

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 ...

Introduction: Military personnel frequently operate in close proximity to electromagnetic (EM) sources such as vehicular communication antennas. Despite this occurrence, detailed evaluations of ...

NILES — Amy and Oliver Lacey like ham. So much so, they can be considered experts. No, wait — sorry. They’re amateurs, actually. Ham amateurs. Not experts. “Hamateurs,” if you will. That’s still not ...

The energy beamed from space won’t be enough to run more than a coffee maker—but if all goes to plan, Japan will soon make history by transmitting solar power wirelessly from orbit to Earth. This year ...

Raspberry Pi Zero 2 W-based 3-antenna switch for HF (100W), controlled via Flask. Uses ANMBEST 4-channel relay (active HIGH), Freenove Breakout Board HAT, and SO-239s in a DXE-UE-2P box with Alpha ...

Department of Electrical and Computer Engineering, University of Cyprus, Nicosia, Cyprus • A microfluidically beam-reconfigurable antenna based on graphene liquid for mmWave communication systems is ...