From my buddy Grok:

The wavelength of a 432 Hz electromagnetic signal is approximately 694 kilometers (about 431 miles), calculated as λ = c / f, where c is the speed of light (≈ 3 × 10^8 m/s) and f = 432 Hz.For effective transmission, antennas typically need to be a significant fraction of the wavelength for good radiation efficiency:A half-wave dipole would be around 347 km long. A quarter-wave vertical (common for ground-based transmission) would be around 173 km (about 107 miles or 569,000 feet) tall.

These sizes are completely impractical for construction.In practice, transmitting at such extremely low frequencies (ELF range, below 3 kHz, or close to super low frequency for 432 Hz) uses electrically short antennas—much smaller than the wavelength—with massive top-loading (e.g., umbrella-like structures) and ground systems to improve efficiency. Even then, efficiency is very low (often 10-50%), requiring megawatts of power and enormous infrastructure, as seen in historical military VLF/ELF systems for submarine communication.

No standard, portable, or reasonably sized antenna exists for effectively transmitting a pure 432 Hz radio signal over meaningful distances. Short antennas would radiate extremely poorly at this frequency [5G antennas are extremely short . . . SC]. (Note: 432 Hz is sometimes discussed in audio or pseudoscientific contexts like "healing frequencies," but that's acoustic sound waves, not radio transmission. Radio waves at 432 Hz behave as described above.)

Note that it talks about the 432Hz signal being AUDIO. 5G cell towers DO NOT TRANSMIT AUDIO FREQUENCIES.