About Antenna & SDR Projects

Antenna & SDR Projects is an independent website of do-it-yourself amateur-radio and amateur-astronomy projects. It covers VHF and wire antennas, software defined radio, a transceiver pan-adapter, a DX crystal set, converting a PC power supply for 13.8 V equipment, and backyard astrophotography.

Each project page is a build log with design notes, measurements, photos and links to the sources it drew on. Start with the ham radio projects, the SDR introduction or the astrophotography section.

Where the projects come from

The project write-ups on this site were first published by amateur station AC8GY around 2010 and 2011. One of them, the dual-band Slim Jim, also appeared in QST in December 2011. They are kept here as an archive of that work, with first-person passages left as the builder wrote them.

This site is not run by AC8GY. It is not his personal website, it does not speak for him, and it is not affiliated with the ARRL, any radio club or any equipment maker. We cannot pass messages on to him.

What comes next

New project articles will be added over time. Older pages describe parts, software and prices from when they were written, so check current datasheets and your licence conditions before you build. The disclaimer explains the safety side.

Corrections

If you find an error, a dead link, or you hold rights in one of the archived write-ups and want a page changed, write through the contact page.