Disclaimer

Last updated: October 19, 2026

Hobby notes, not a certified design

Pages on ac8gy.com are personal notes by Albert F. Peter, AC8GY. Antenna articles, the pan-adapter notes, the crystal-set receiver, and the modified computer power supplies describe what I built and measured at the time. They are not a certified design, a kit, or a substitute for the manufacturer's instructions.

Mains voltage can kill. Antennas near power lines, and RF energy at the antenna, can injure people and damage equipment. If you reproduce a project, you do so at your own risk. Use a licensed electrician where your local code requires one, keep antennas clear of electric lines, and follow current amateur-radio RF-exposure practice. If you are not comfortable working on a live circuit, do not open a power supply.

Archive

Many pages were written in 2010 and 2011. Parts, software, and linked sites change. A dimension, a menu path, or a download named on a page may no longer match what you can buy or install today. Check the date on the page before you rely on it.

Photographs and astronomy

Photography and astronomy pages are pictures and presentation notes from my own work. They are not a course and not a product review written for a manufacturer.

External links and ads

Links to other organizations, and advertisements served by partners such as Google, are not endorsements. I do not control those sites and I am not responsible for their content or for products they sell.

Call sign

AC8GY is my amateur call sign. Nothing on this site is an official notice from the FCC, the ARRL, or any club.

Questions: contact me. The terms of use and privacy policy also apply.