How do I know my Spooky2 Scalar is producing a scalar field? It is strange that I can “Tune” the transmitter even with the Receiver’s cable disconnected. How does the Spooky2 Scalar carry the elect...

Energy transfer in scalar mode can be confirmed by pressing the button on the receiver. It is not possible for current to return to the transmitter over such a large distance without a scalar field.
https://science.howstuffworks.com/electricity5.htm
That link will help if you are not familiar with electronics.

“Electrical circuits can get quite complex, but basically you always have the source of electricity (such as a battery), a load and two wires to carry electricity between the two. Electrons move from the source, through the load and back to the source.” Spooky Scalar only has one wire to the transmitter. There is no return wire. The scalar field carries the electrons back to the transmitter.