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 ...

Abstract: High Frequency (HF) communication, operating within the 3 to 30 MHz range, has been pivotal for long-distance wireless communication, especially in scenarios where infrastructure (such as ...

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 ...

HF Foods Group Inc. trades at a steep discount to peers but must close profitability gaps and navigate industry headwinds to unlock value. Recent investments in facilities and systems are starting to ...

We may receive a commission on purchases made from links. But remember: The channels you end up receiving are ultimately determined by antenna placement in your home, proximity to a broadcast tower, ...

The Plymouth County Retirement Association is collecting proposals for diversifying hedge fund strategies. The $1.5 billion Plymouth, Mass. pension kicked off the search through its consultant Meketa ...

Oilstainlab’s HF-11 is the kind of supercar that is a certain kind of purist’s dream: retro looks, lightweight, rear-wheel drive, and manual transmission available. It also offers up big power from an ...

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 ...