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Measuring Power Line Noise in the Neighbourhood with the RTL-SDR “Driveby”...
Over the last few months Tim Havens has been developing a portable RTL-SDR based scanner that he intends to use for geo-tagged noise floor readings. He hopes to use such a system to map sources of RF...
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Updates to the Power Line Noise Detector “Driveby” System
A few days ago we posted about Tim Havens “driveby” project, which is a RTL-SDR based system he developed to help create heatmaps of power line noise in his neighborhood. Upon doing further research,...
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CANFI: Cheap Automatic Noise Figure Indicator Updated to V2.7
Back in July 2014 we posted about the CANFI (Cheap Automatic Noise Figure Indicator) system. The CANFI system is a set of hardware components that include an RTL-SDR and a corresponding software...
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HamRadioScience: Why Apple’s iMac May be the Best PC for SDR Applications
Over on on the HamRadioScience blog, the author has uploaded an article that makes the case on why Apple iMac PC’s may be the best choice for SDR receivers (at least for HF frequencies). In the testing...
View ArticleShowing what Solar Power Inverter Interference Looks Like
Over on YouTube user ALI6359 has uploaded a video showing what severe interference from a neighbors poor quality solar power inverter looks like on his RTL-SDR dongle. An inverter converts the DC power...
View ArticleIdentifying Noise Sources in the Shack using an SDR and an Active Receive Loop
Over on YouTube user SignalSearch has uploaded a video showing how he uses an active magnetic loop antenna indoors to identify local noise sources. Magnetic loop antennas are directional, meaning that...
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Reducing HF Electrical Noise by Using a Faraday Cage for Switch-Mode Power...
Over on his blog, DXer OH2-2192 was frustrated by lots of local electrical noise showing up on the HF bands on his Airspy + Spyverter SDR receiver. He discovered that the majority of the noise he was...
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Generating White Noise with an FL2K Dongle
The FL2K project allows us to turn a cheap USB 3.0 dongle into a fully transmit capable SDR (filters still required for high power work). We have posted about the FL2k project several times on this...
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