The LZ1AQ Loop Amplifier looks like a stable solution for my wideband magnetic loop project. Time to test a prototype on a breadboard. Read more
Tag: SWL
Head End Instability – LTSpice Limitations
LTSpice limitations can bite. The macro models used in simulation don’t sufficiently take into account parasitic and circuit layout effects that can haunt you down the road. Read more
Dual Base Amplifier for Wideband Loops
My dual base amplifier is built to match remote wideband loops to a coherent two-channel receiver. Implemented with wideband FET op amps, performance is great. Read more
Wideband Loop Initial Build – Mixed Results
Good news, bad news. My wideband loop initial build sort of works, but the transimpedance amplifier has stability problems. Read more
Path Dependent RFI Tools – Use Them All
Path dependent RFI tools include ferrite chokes, power line filters and noise cancellers. Using these can make all the difference between listening to signals and listening to interference. Read more
Primary RFI Paths – A Mitigation Framework
Between sources and victims of received RFI are four primary RFI paths. Each requires understanding and applying different mitigation approaches. Read more
Residential RFI Antenna All Around You
Household wiring is a near perfect residential RFI antenna. It combines conducted and radiated paths to drown out your shortwave receiver. Read more
How EMI Filters Work – Check the Details
You can learn a lot about how RFI is conducted by studying how EMI filters work. Let’s check one out in detail. Read more
Broadband RFI Spectrum and Transmission Paths
We listen to our radios in a broadband RFI spectrum conducted and radiated all around us. Read more
RFI Transmission Paths – How Does It Get Into My Receiver?
Your house and neighborhood are full of RFI transmission paths. It’s time to understand these better as we fight the effects of interference on our radio hobbies. Read more