Software-defined Radios and Bias Tees
We wrote about Bias Tees and their applications within the context of Software-defined Radios in a previous post. The primary use of a bias tee in SDR is to enable …
How Not to Break your Software-defined Radio (SDR) Hardware – Part 2
In Part 1 of this article, we covered RF-related precautions on the transmit and receive sections of a Software-defined Radio. In this article we will cover other precautions including Mechanical …
How Not to Break your Software-defined Radio (SDR) Hardware – Part 1
We discussed a few different Software-defined Radios on the market in a previous post. Once you get your SDR and have it up and running, there are a few precautions …
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 …
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 …