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Vertical Dipole Array for 20-17-15 Meters ^new - This article explores the evolution of antenna choices for DXpeditions, focusing on the shift from mono-band VDAs to a multi-band solution. It details the design and construction of a lightweight, versatile 20-17-15m VDA, utilizing readily available materials like fishing rods and IKEA breadboards. The author discusses challenges, adjustments, and offers guidance for replication.
[ Hits: 66 | Votes: 0 | Rating: 0 ]

SOTA Associations - SOTA is continually growing with new Associations regularly coming on board. Click on an Association to find out more information, access the Association Reference Manual (ARM) and view its regions and qualifying summits.
[ Hits: 49 | Votes: 0 | Rating: 0 ]

Arduino Nano and si5351 Digital VFO/BFO - A kit Digital VFO with pre-soldered surface mount parts and burned-in firmware, a scratch build with Arduino Nano, C code with modifications, and a Silicon Labs si5351 PLL clock generator on a breakout board.
[ Hits: 375 | Votes: 2 | Rating: 6 ]

Arduino Morse Code Trainer - How to build a Simplified Arduino CW Trainer, this is a version that does not need a keyboard.
[ Hits: 174 | Votes: 1 | Rating: 9 ]

PCM Kestrel HF Transceiver - This article describes an upgrade to the Kestrel transceiver, replacing its LCD display with a 0.91-inch OLED screen for improved sound quality. VFO boards from Denys VK3ZYZ were integrated, particularly a Nano VFO board. The author shares details about the setup and the resulting enhancements, along with images of the modified components. The transceiver is now optimized for various frequencies and operates at a power output of approximately 120 W pep. More information about the boards can be found on the provided website.
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