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
Tag: hamr
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
Learn Hot Air Soldering – Practice First
If you want to learn hot air soldering, you need to practice first. I didn’t and that was a mistake. What looks easy on You Tube videos takes some effort to learn in real life! Read more
Favorite Ham Radio Magazine Issue March 1978
What were you doing in March 1978? I was reading my favorite Ham Radio magazine issue of all time. 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
Goal Line Tech – Light versus Radio
Goal line tech uses low frequency radio or cameras to detect when a soccer goal has been scored. No more arguments about “was it in?” 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