Ham operators have access to a wide variety of satellites orbiting the earth. These orbiting repeaters allow reliable communications without relying on the ionospheric propagation we require on the HF bands. But there are things you need to know to be able to successfully utilize satellite communications on both the easy FM satellites and the more complicated weak signal satellites.
At his presentation “Operating the Ham Radio Satellites,” Mitch Stern, W1SJ, will review satellite technology and focus on the equipment and techniques used to make the contacts. There is nothing quite as rewarding as putting all the myriad details together to complete a satellite QSO!
Join Larry Banks, W1DYJ, at his 2025 HamX talk where he will share the results of modeling his stack of home brewed 5-element 10m Yagi, 20m Moxon, and 15m dipole.
HamClock is a ham radio application that integrates propagation forecasts, solar weather, DX spots, DX information, and terrestrial weather into one kiosk-style view that can greatly assist in DX hunting.
RF PCB design is often considered one of the more challenging aspects of electronics engineering due to the high frequencies involved and the sensitivity of signal integrity. In this presentation, Max Kendall, WØMXX, will dive into the core principles that underpin effective and reliable RF board design. He will explore the importance of using a 4-layer PCB stackup, which allows for better isolation, dedicated ground and power planes, and improved signal performance.
The Amateur Radio Emergency Data Network (AREDN) is a system leveraging modified commercial off-the-shelf (COTS) hardware to establish high-speed, self-configuring, and self-healing data networks in amateur bands. AREDN has the capability to deliver critical and redundant Internet Protocol based infrastructure that is independent of traditional Internet infrastructure.
Andy Stewart, KB1OIQ, has created a ham radio software collection called “Andy’s Ham Radio Linux.” This freely downloadable software has over 100,000 downloads to date. It now runs on several flavors of Linux including Raspberry Pi.
Handwritten logs aren’t a thing of the past! Some of our fellow amateur operators, such as those with vision impediments, still record their contest logs on paper but many contests now require digital Cabrillo logs.
Join Hisen Zhang, KD2TAI, for his talk entitled, “De-mystifying Quantum Computing: Application of RF Control System,” one of the many outstanding technical talks that will be presented at the 2025 Northeast HamXposition in Marlborough, MA, August 21-24, 2025.