How to send out 60khz signal from antenna?
"Actually does the antenna really work with only one end connected onto the breadboard?" No, not this type of antenna. What you have is a loop antenna and it creates a magnetic field. You're now using it as if it is an electrical antenna and that would work IF it was very long, for 60 kHz we're talking 1250 meters (!!!) and not rolled up like yours.

I suggest you connect the open end of the antenna to +5 V BUT to limit the current, use a series resistor of value 1 kohm or so.

If you build this then I think there's a good chance it will work.
Note how the Antenna is a coil (long wire with many turns) and both ends of the wire are connected !







simulate this circuit &ndash; Schematic created using CircuitLab