Should I place a Low Noise Amplifier Before or After a Filter?
Most Software-defined Radios operate over a large frequency range. The RTL-SDR for instance can operate from 500 kHz to 1.7 GHz while the HackRF can operate from 1 MHz to …
An Introduction to Low Noise Amplifier Specifications
A Low Noise Amplifier (LNA) is an electronic device that amplifies weak signals at its input without adding significant noise to the output signal. Such amplifiers are typically used in …
FM Notch Filters – why you need one with most SDRs
FM radio was invented in 1933 and is one of the most popular broadcast technologies out there. FM broadcast signals in most places in the world occupy the frequency range …
How does Software-defined Radio (SDR) work?
Updated January 2021 Most of us are familiar with communication devices such as AM/FM radios, Smart phones and Two-way radios. The radios within these devices are comprised of hardware in …
How to Pick a Software-Defined Radio (SDR)
At oneSDR we spend a lot of time researching and working with different Software-defined Radios. Based on our extensive experience with SDRs here is what we recommend you should consider …