John

See the following from ICNIRP

* Energy absorption from RF fields in tissues is measured as a specific absorption rate (SAR) within a given tissue mass. The unit of SAR is watts per kilogram (W/kg). SAR is the basic dosimetric quantity for RF fields between about 1 MHz and 10 GHz.

* An SAR of at least 4 W/kg is needed to produce adverse health effects in people exposed to RF fields in this frequency range. Such energies are found tens of meters away from powerful FM antennas at the top of high towers, which makes these areas inaccessible.

* Most adverse health effects that could occur from exposure to RF fields between 1 MHz and 10 GHz are consistent with responses to induced heating, resulting in rises in tissue or body temperatures higher than 1C.

* Induced heating in body tissues may provoke various physiological and thermoregulatory responses, including a decreased ability to perform mental or physical tasks as body temperature increases. Similar effects have been reported in people subject to heat stress: for example, those working in hot environments or suffering a prolonged fever.


Actually, at 1 MHz, you are allowed the highest exposure that there is allowed. 100 mW / cm*cm, with a rolloff starting at 3 MHz. I don't see how a 5 KW exposure at 1 MHz will cause much heating... (FCC MPE tables)


Unless the antenna had an unusual pattern, rather than the proverbial isotropic radiator, not much will happen.

Mark Goodson