ABSTRACT: On 25 October 2013, the Sun emitted two significant solar flares. The first solar flare, classified X1.7, peaked at 08:01 UT. The second one, X2.1, peaked at 15:03 UT and was accompanied by ...

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 ...

The Antenna MAX S is a roof-mounted enclosure for select Peplink routers, with integrated 4x4 MIMO cellular, 2x2 Wi-Fi, and GPS antennas. The weatherproof enclosure also has space to mount a Starlink ...

ABSTRACT: This note describes optimally matching the seminal Fano Load using Central Force Optimization with Negative Gravity. This approach improves the best fitness by more than eighteen percent and ...

Waveform is a US-based company that sells cellular-related equipment and also manufactures some of its own, including cellular antennas. Most of Waveform's antennas are designed for stationary/fixed ...

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 ...

Abstract: The working band of the airborne HF antennas is 2-30MHz (wavelength 10-150m), which can communicate over long distances. Limited by antenna size, airborne HF antennas have the disadvantages ...

As the name suggests, the HF-11 looks similar to the Half11, yet its purposefully retro-styled profile features futuristic hypercar lines and surfaces. With a carbon-fiber monocoque draped in ...

In brief: It's been over five years since 5G started its worldwide rollout, bringing low-latency super-speed internet to hundreds of millions. But building out those 5G networks has been a challenge.