Santa Net is an annual December event where licensed amateur radio operators use RF and EchoLink technology to connect children with Santa Claus on the airwaves.

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 ...

NEW YORK, Sept. 30, 2025 /PRNewswire/ -- According to a new comprehensive report from The Insight Partners, the global Omni-Directional Antenna market is experiencing significant growth due to the ...

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 ...

Add a description, image, and links to the directional-wifi-antenna topic page so that developers can more easily learn about it.

The long-wire dipole antenna is effective for low-frequency systems. Adding LC traps makes a single-band dipole antenna into a multiband unit. The historically significant long-wire dipole antenna may ...

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 ...

1 General Internal Medicine Department, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China 2 Institute of Basic Research in Clinical Medicine, China Academy of Chinese ...

Abstract: An omni-directional radiation antenna combined with two antennas with orthogonal polarizations is proposed in this paper. Different with the general "omni-directional" antennas, this ...