Collaborate Disseminate
A word of advice: If you see an old direct satellite TV dish put out to the curb, grab it before the trash collector does. Like microwave ovens, satellite dishes …read more Continue reading Minimal Mods Make Commodity LNBs Work for QO-100 Reception
Dirty little secret time: although amateur radio operators talk a good game about relishing the technical challenge of building their own radio equipment, what’s really behind all the DIY gear …read more Continue reading Low-Cost RF Power Sensor Gets All the Details Right
The proliferation of software-defined radio (SDR) technology has been a godsend for RF hobbyists. SDR-based receivers and transmitters have gotten so cheap that you’ve probably got a stick or two …read more Continue reading Bringing Some Discipline to an SDR Transmitter
Amateur radio operators like to say that working a contact in space can be done with a simple handheld transceiver and a homemade antenna. And while that’s true, it’s true only for low Earth orbit satellites such as the ISS. If you want to reach a satellite in geosynchronous orbit …read more
Continue reading A Hybrid Helical Antenna for the Es’hail-2 Geosynchronous Repeater
In the radio business, getting the high ground is key to covering as much territory from as few installations as possible. Anything that has a high profile, from a big municipal water tank to a roadside billboard to a remote hilltop, will likely be bristling with antennas, and different services …read more
Continue reading Es’hail-2: Hams Get Their First Geosynchronous Repeater