Hello. Sorry I created an issue for this. They are just questions.

I am planning on implementing this for a Casio G-Shock GW-M5610 since there is no time radiowave reception where I live.
My idea is to use an Arduino Pro Mini and read from an NTP server and transmits (using PWM) to the near field casio watch. I commented WWVB_JJY_PAM define and set this define:
#define WWVB_JJY_PWM

I would be very grateful if you can help me answering this questions:

1. How would be the minimum schematic without the debug circuit (led, capacitor and resistor)? Just the antenna to digital pin 9?
2. If so, would a plain wire do the work for a watch standing by a couple of centimeters apart?

Thank you!!