All antennas can build up “high voltages” during transmit. The ends of a half-wave dipole will have more than 500 Volt potential with 100 Watt input. Don’t touch them when transmitting.

The procedure outlined below can help you understand the process of making and testing an HF RFID antenna. A loop antenna is a tuned LC circuit for a particular frequency, which is 13.56 MHz for the ...

So even when doing low power, like 4W from a CB radio, it’s better too keep a magnetic loop at a distance. Say being 2 or 3 meters away while transmitting. Anyway, just saying.