On the 75th Anniversary of Operation Overlord, let’s remember D-Day radio action on the beaches. Read more
Category: Shortwave Radio
DIY Wideband Loop Rotator Concept
Here is a DIY wideband loop rotator concept that should work with either stepper or DC geared motors and cost less than $30 to build. Let’s take a look. Read more
Loop Rotation Options Considered
You should check out wideband loop rotation options if you plan to use the antenna for low-angle DX reception at long, medium and lower HF frequencies. What are the options? Read more
LZ1AQ Loop Amplifier Project Printed Circuit Board
So, great news. I have taken the original LZ1AQ loop amplifier project, fabricated a custom PCB and built it with surface mount parts. It works great. Read more
LZ1AQ Breadboard Performance – Basement Adventures
My early tests with LZ1AQ breadboard performance are very encouraging, even with the loop still located in my basement below ground. Read more
LZ1AQ Loop Amplifier – Breadboard Version
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
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
Wideband Loop Base Amplifier Feeds Receiver
We complete the electronics requirements for our loop antenna design with a wideband loop base amplifier to match the transmission line to a receiver. Read more
Wideband Loop Transmission Line Choices
With a little ingenuity, you can select either coaxial or network cable for your wideband loop transmission line. Either will work, but I am going with twisted pair. Read more
Wideband Loop Transimpedance Op Amp Selection
You can select candidates for a wideband loop transimpedance op amp by reading data sheets and simulating performance in LTSpice. Read more