Today on Stupid Solutions to Stupid Problems – a postage stamp sized PCB for putting an SMA port on, well, whatever. Several times on recent projects I’ve had to try to pass RF around between boards that don’t have footprints for coaxial connectors. I’ve tried various methods such as just soldering a bit of micro-coax […]

If you’re interested in a kit to build the T41-EP open source transceiver please send me an email (justin@ai6ym.radio). I’ve been unable to find anything in stock for myself so, with the blessing of the creators, I’ll be running a small batch of them. The T41-EP is an excellent software defined transceiver (SDT) designed by […]

Somehow I’ve avoided operating on Field Day for the seven years I’ve been licensed. Life always found a way to keep me busy on the fourth full weekend of June. This year I finally made it out, joining PAARA at Bedwell Bayfront Park. I’ll admit that I skimmed the announcement so I wasn’t expecting super-stations […]

The availability and performance of Software Defined Radios (SDRs) today is incredible. Equally incredible is how poorly us Hams make use of the capabilities at our disposal. A single HackRF One can simultaneously receive a 20MHz wide slice of spectrum anywhere from 1MHz to 6GHz. That means that a single device can simultaneously receive every […]

I had a great time on Saturday operating from the P3 Orion preserved at the Moffett Field Museum. In honor of their 91st birthday the museum has opened up their P3 Orion for visitors (and brought out a few other special exhibits I won’t spoil for you). With the help of Mike “The Noisy Kid” […]

Nearly every radio project needs a low pass filter at some point, the QRP-Labs LPF kit is a quick and easy build that can knock out harmonics for nearly any low power HF radio. This is a compact, modular kit implementing a 7-element low pass filter which can handle 10 watts safely. Variants are available […]

The QRP-Labs Ultimate Relay Switched LPF Kit was developed by Hans Summers, G0UPL, as an extension to the Ultimate 3 and Ultimate 3S transceivers. It allows switching between six different Low Pass Filters (LPFs) and so operating the transceiver on six different bands instead of one. I’ve used these relay-switched filter boards in several projects […]