RF

WiFi location

In three years or so, the Wi-Fi specification is scheduled to get an upgrade that will turn wireless devices into sensors capable of gathering data about the people and objects bathed in their signals. In this WiFi is following the footsteps of Bluetooth that got location features already some years ago. “When 802.11bf will be

tinySA RF spectrum analyzer

TinySA is an amazing gizmo! I have already posted some video link on TinySA and here is some mode material on it. RF testing is getting quite popular these days, with many devices featuring wireless capabilities. However, RF test devices are quite expensive, or at least have been, as on few recent years many affordable

Friday Fun: 5G protection shield issues

Buying a 5G protection shield seems to be a zero sum game where you always loose: If you get product that works as advertised you will loose your connectivity and if you buy a non-working you loose your money to a scammer. Conspiracy Theorists Buy Faraday Cages To “Protect” Themselves Then Complain When They Work

50 ohm vs 75 ohm conversion

Coaxial cables are measured by impedance. The most common impedance values are 50 ohms and 75 ohms. different cables. 50 ohms is most often used for radio transmitting and receiving applications. 75 Ohm is primary used for video and audio. 75 Ohm cables are the standard coax cable you find everywhere inside your home and

tinySA cheap pocket size RF spectrum analyzer

A spectrum analyzer measures the magnitude of an input signal versus frequency within the full frequency range of the instrument. The primary use is to measure the power of the spectrum of known and unknown signals. Spectrum analyzers are widely used to measure the frequency response, noise and distortion characteristics of all kinds of radio-frequency

NanoVNA cable measurements

Having a VNA opens up so many possibilities for RF measurements. Typical measurements are antenna matching, RF filters, impedance matching and cable loss. But it an do more. You can use it even to measure the coaxial cable length – a task that is normally performed with time domain reflectometer (TRD), an instrument I have

NanoVNA as signal generator

NanoVNA vector signal analyzer can be used also as an RF signal generator. If you are in a hurry and need a quick & square wave signal between 50 kHz and 300 MHz the NanoVNA can come to the rescue. Just set the centre frequency of the stimulus at the value you need and a

S-A-A-2 NanoVNA V2

A Vector Network Analyzer (VNA) is an extremely useful tool for radio hobbyists as it allows you to measure and tune antennas and filters, as well as measure cables. The most affordable such instrument for some time has been NanoVNA. NanoVNA V2 Vector Network Analyzer can be viewed as next updated version of NanoVNA. The

NanoVNA RF Demo kit

Got RF test kit to play with NanoVNA from Banggood: RF Demo Kit NanoVNA RF Tester Board Filter Attenuator for NanoVNA-F Vector Network Anaylzer. I selected this RF Demo Kit NanoVNA over another quite similar RF demo kit because this kit was cheaper and looked better. This RF Demo Kit is specially designed for RF

SDR videos

Software-defined radio (SDR) technology can be used for many interesting technical experiments. With listening only SDR you can do many interesting things, but having a SDR that can also transmit opens many new doors. Here are some interesting videos related to SDR and cyber security: Universal Radio Hacker – Replay Attack With HackRF Download here: