Some front end filtering helps you use wideband loops with wideband SDR receivers on HF while holding overload from nearby broadcasters at bay. Read more
A wideband rejection filter may be used to prevent medium wave overload while still keeping the wideband nature of your receiving system intact. Learn more. Read more
This article shows how to build a simple GNURadio SSB Receiver. We will use it to learn more about GNURadio and decode single sideband. Read more
Have you ever wanted to build your own radio receiver? Looking for a challenging but fun software project? Coding SDR meets both objectives. It is a project within reach of radio hobbyists with a bit of skill in writing software. Here are some ideas.
Anyone with a computer and $25 can play with SDR. You can listen to and watch radio signals: AM, FM, shortwave, public safety, airplanes, satellites, even phones. An example of cheap SDR is the USB dongle described in a recent article.
What is SDR radio? SDR stands for software defined radio. This means a radio whose functions and capabilities are defined by software rather than hardware. Here’s how that happened.
When I put the RTL-SDR at the top of my Christmas wish list last year, a few eyebrows were raised. Why would a guy who has played with some of the best radios available want a little trinket that looked like a USB flash drive and cost about the same? Surely that was a mistake. It wasn’t.
According to Wikipedia, a dongle is “a small piece of hardware that attaches to a computer, TV, or other electronic device in order to enable additional functions…” The RTL-SDR is a dongle that plugs into the USB port and enables your computer to be a software defined radio. You just need to add software (which can be free) and an antenna and voila – a complete reasonably high performance radio for under $20.