The Double Bazooka Dipole is a very efficient single band antenna which is very quite,and does not require the use of a balun. This antenna consists of coax (RG58) with the shield split at the center and the feedline attached to the open ends.
Bouncing a signal off the moon so you can communicate with other people
A bazooka coax antenna for 40 meters band design by CA6TYS
The K7EFX Multiband 3-Half-Wave 6-Meter, Half-Wave 17-Meter, Rotatable Antenna
Notes on the intensity of RF Field calculated on magnetic loop antennas. The magnetic field intensity of a mag loop is considerably higher than the E field probably due to the inductive portion of the resonant circuit creating the radiation (magnetic) in the near field
A combined 1KW VHF, 500W UHF linear power amplifier homebrewed by M0VKK
The risks for exposure to significant levels of RF radiation is high for tower climebers, the RF field levels near FM radio and television antennas are extremely high.
There are many different RF safety standards and regulations used throughout the world, here are discussed: US FCC regulations, IEEE standard, Canadian Safety Code 6 and International Council on Non-Ionizing Radiation Protection