What is a Bias Tee?
Updated January 2021 A bias tee or Bias-T is one of the most useful Software-defined Radio (SDR) accessories you have likely never heard of. Low Noise Amplifiers are used to …
Blog
What is Software-defined Radio used for?
Software-defined Radio technologies have become increasingly accessible these days with low-cost devices ranging in price between $20 and $300 and offering varying levels of performance. Here is a list describing …
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 …
The Best Software-Defined Radio (SDR) for Education
Education and in particular in the area of Wireless Communication Systems is one of the main applications for SDR. We spent over 100 hours both researching and talking to experts …
Analog-to-Digital Converters in Software-Defined Radio (SDR)
An Analog-to-Digital converter (ADC) is a device that converts an Analog signal to its Digital equivalent. The ADC is the bridge between the analog and digital in the world of …
What is a Hybrid Software-Defined Radio (SDR)?
A hybrid SDR is a radio system utilizes a mix of conventional analog components as well as software and digital technologies to process a radio signal. The picture below shows …