DIY Antennas, QRP, SDR & Ham Radio Projects from VU3DXR
The VHF/UHF section concentrates on 6 m, 2 m, 70 cm, and nearby bands, covering everything from FM repeaters and local chat to satellite, ISS, and experimenter‑friendly projects. You’ll find DIY antennas like full‑wave loops, bi‑square designs, Super J‑poles, collinears, hotel antennas, and compact mobile whips, as well as small transmitters, preamps, and SDR‑based handhelds suited for these frequencies.
Articles emphasise gain, pattern control, and practical mounting options so that your handheld, mobile, or base rig can make the most of limited height and cluttered surroundings. Many builds are optimised for simple materials such as copper wire, aluminium tubing, and PVC, making them easy weekend projects. Start here if you want stronger repeater coverage, better simplex range, or a more capable VHF/UHF station for both local and experimental work
DIY Programming cable for a Motorola GM 300 series two-way radio To make a DIY programming cable for a Motorola GM300, you will need the following materials: A USB-TTL adapter An RJ45 Ethernet connector A standard silicon signal diode, such as the 1N4148 An Ethernet cable. Once you have gathered your materials, follow these steps […]