125kHz RFID Reader and Huge Field Antenna

Thread Starter

Коунт Зеро

Joined Jan 4, 2019
Hello everyone
I'm working this circuit for a weeks.
But i can't seem to understand full details and it's working since i'm almost newbie to Radio Communications.
So i have few questions on this circuit.
1.Can anyone explain me deeply about this circuit?
2.Is it possible to attach 1.5m diameter antenna?
3.And i can't seem to find equation's related to calculations of coil turn?
Any advice will be appreciated.