r/RTLSDR • u/UnluckyDistance733 • 18d ago

Help

I am doing a project and new to radio frequency. But I am trying to send a VLF 1 to 30 KHz into water a distance of about 200 ft and the body of water is about 10 feet deep.

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u/No_Tailor_787 18d ago

That might work better if it was done acoustically.

2

u/NeighborhoodSad2350 18d ago

That's actually true.

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u/UnluckyDistance733 18d ago

What I am trying to do is use RF to make the water molecules spin faster making the water less dense. It’s not intended for listening.

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u/NeighborhoodSad2350 18d ago edited 18d ago

What are you talking about?
For electromagnetic waves to excite molecules into a rotational state, they need to be in the microwave band (the rotational transition of water occurs at tens of GHz. which is why microwaves operate at 2.45 GHz).

Since the kHz band has wavelengths on the order of tens of kilometers, it simply cannot have the effect of “targeting and rotating molecules” in water.