Is the rooftop communication base station powered

Do rooftop antennas cause RF emissions?

When cellular and PCS antennas are mounted on rooftops, RF emissions could exceed higher than desirable guideline levels on the rooftop itself, even though rooftop antennas usually operate at lower power levels than free-standing power antennas. Such levels might become an issue for maintenance or other personnel working on the rooftop.

What is a broadcasting tower?

Broadcasting towers. The larger, permanently mounted antennas are known as broadcasting towers (or masts) and can be found on some of the tallest buildings in North America. They are the most potentially hazardous. These transmit television and FM radio signals to surrounding communities for many, many miles (see photo 6).

What if a rooftop transmitting site exceeds FCC limits?

FCC limits for human exposure are based on a safety factor of 10, so even if a rooftop transmitting site exceeds FCC limits, while this could represent a regulatory breech, it still may be safe for firefighters to operate (depending upon signal strength) and how long one is exposed. “Whip antennas.”

Should firefighters be aware of roof-mounted transmission devices?

Curtis S.D. Massey discusses the importance for all firefighters and chief officers to be aware of roof-mounted transmission devices and how they might affect their safety during any type of rooftop operation. An example of a properly designed restricted area near UHF antennas on a roof setback.

How much power does a rooftop antenna use?

The higher the power level, the greater the potential for exceeding established safe limits for exposure. They range from one to five megawatts of effective radiated power. These are the strongest sources of RF energy found on rooftops and particular caution should be used if required to access regions near the actual antennas.

Are there hot zones on rooftops of tall buildings?

It is not uncommon to find “hot zones” on rooftops of tall buildings in large cities in North America. There are some areas (such as previously mentioned TV and radio broadcasting sites) where no one should go, unless the equipment is powered down and taken off-line due to the hazards of being in close proximity to the broadcast antennas.