SendPicsofSandwiches

It helps to wind in opposite directions since the opposing flow of common mode current is a big part of what helps it cancel out

Less than 30 with full modulation from the radio, but this is the low current side. The big side of the system can pull 150 peak

It’s a mix 43 ferrite toroid with 3 turns of 8awg wire going opposite directions for positive and negative. The idea is that clean dc power can get by easily, but interference from stray RF, or nearby electrical switching (think dimmable LEDs or similar) will see a really high resistance as it goes around the ring and get lost as heat, letting only the clean power get to the radio.

This same idea is used on usb cables and all kinds of household electronics to protect against data loss and interference.

Pictured above as the knobby things at the ends of a usb cable, these guys are the little cousin of the big bertha version I made

Edit: It’s a really easy thing to make, it’s just the first time I’ve ever done anything like that completely from scratch, and I have been really happy with the result

She carries a good amount of current, and she don’t get hot doing it!

I wound my own common mode choke to reduce noise in the power line for my mobile radio

And why does my neighbor keep leaving ears of corn covered in chocolate in his mailbox?

Lmfao