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loopantenna

A collection of 7 posts

Loop Antenna Copper Jumpers

Loop Antenna Copper Jumpers

I am planning to machine some copper jumpers to go between the copper loop and the vacuum capacitor. These can be soldered (or brazed) to create a solid connection with very low resistance.

Loop Antenna - Initializing the TMC2130

Loop Antenna - Initializing the TMC2130

Continued from part 4. Now that I can read and write across the SPI interface I am going to write an initialization routine for the TMC2130. Fig 22.1 and 22.2 in the TMC2130 datasheet show a "quickstart" routine for the TMC2130. First, here is 22.1: At "SC2"

Loop Antenna - SPI Read and Write

Loop Antenna - SPI Read and Write

Continued from part 3. Now that I have confirmed the stepper driver is working properly, I want to establish SPI communication for configuration and status readback. This will be especially important to enable the stall detection feature I am using for homing. First, I wrote a function to read and

Loop Antenna - Motor Control Part 1

Loop Antenna - Motor Control Part 1

Continued from Part 2. I am starting to work on the automatic tuner for the magnetic loop antenna. I will implement the various functional blocks in the following order: 1. Motor control and homing 2. SWR measurement 3. Seeking algorithm to store history and tune quickly Component Selection: I am

Loop Antenna - Assembly and First Test

Loop Antenna - Assembly and First Test

Picking up from part 1. Today I finished assembling the loop antenna and ran some tests on it for the first time. The results look great so far and after this I'll be ready to put it on the air. First, I screwed on the plastic clamp pieces to each

Loop Antenna - Annealing Copper

Loop Antenna - Annealing Copper

Continued from Intro. Many people assemble their loop antennas using copper pipe and 45 degree angle connectors to form an octogon. This approximates a circle well enough, but introduces some electrical resistance to the loop. I want to bend a piece of copper into a continuous loop to decrease the

Ham Radio Loop Antenna

loopantenna Featured

Ham Radio Loop Antenna

Intro to my Loop Antenna Design