ON5IAEverything you need to build the automatic magnetic loop tuner in just one picture. On the Flickr page, you can…
Continue ReadingHow Are PCB’s Made?
There are about 10 working days between finishing the PCB design in Eagle and the reception of the finished product…
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Automatic Magnetic Loop Tuner – Stepper Motor
Adafruit has dedicated an interesting blogpost about stepper motors. Click on the link below to learn all about stepper motors.…
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Automatic Magnetic Loop Tuner – Another Soldering Session
I took some time to solder another PCB for an Automatic Magnetic Loop Tuner. I made some pictures of the…
Continue ReadingAutomatic Magnetic Loop Tuner – Printed Circuit Board (PCB)
Using the original schematic as a starting point, I reworked the electrical diagram and incorporated an A4988/DRV8825 module. You can…
Continue ReadingAutomatic Magnetic Loop Tuner – A4975STB, A4988 or DRV8825
The design Loftur published on the project site was built around two A4975SBT ic’s. Although they are available at digikey.com…
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Automatic Magnetic Loop Tuner – Rotary Encoder
The rotary encoder is the most expensive part of the automatic magnetic loop tuner. It’s a little more expensive than…
Continue ReadingSoldering – When To Use Flux
Ever wondered when you should use flux when soldering? Here’s a video that will explain this in a very clear…
Continue ReadingAutomatic Magnetic Loop Tuner – Region 1 SSB Field day
CQ field day, CQ field day, this is ON5IA/P. The proof of the pudding is in the eating, as they…
Continue ReadingAutomatic Magnetic Loop Tuner – First QSO
On the 15th of March 2017, we were ready to test our final product. The Automatic Magnetic Loop Tuner was…
Continue ReadingAutomatic Magnetic Loop Tuner – Assembly
The PCB is soldered, we did the metal work and the paint job on the project box. Now we are…
Continue ReadingAutomatic Magnetic Loop Tuner – Metalwork
Now it’s time to put the soldering iron down for a while and pick up our metal working tools. Our…
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