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It is possible to also get a bad picture if the signal strength of the TV transmitter is too high. An attenuator inserted in the antenna lead-in wire may be used if the television receiver displays signs of overload in the RF front end. Strong out-of-band signals may also affect television reception and may require band-pass filters to reduce ...
The classification of mobile phone signals as "possibly carcinogenic to humans" by the World Health Organization (WHO) — "a positive association has been observed between exposure to the agent and cancer for which a causal interpretation is considered by the Working Group to be credible, but chance, bias or confounding could not be ruled out ...
The antennas contained in mobile phones, including smartphones, emit radiofrequency (RF) radiation (non-ionizing "radio waves" such as microwaves); the parts of the head or body nearest to the antenna can absorb this energy and convert it to heat or to synchronised molecular vibrations (the term 'heat', properly applies only to disordered molecular motion).
Not only does testosterone affect many physiological processes, but it can also have an impact on cognitive function and mood. If you have low testosterone, you may have a higher risk of ...
Many times smaller antennas and receivers such as those in vehicles will receive stations farther than normal depending on how favourable conditions are. While only a limited number of local stations can normally be received at satisfactory signal strengths in any given area, tuning into other channels may reveal weaker signals from adjacent areas.
Cardiovascular disease is a catchall term for any condition that affects the heart or blood vessels. It can have many potential causes, including genetics, lifestyle habits, and underlying health ...
When a broadcast reaches well outside of its intended range due to unusual conditions, DXing is possible. The local terrain can also play a major role in limiting broadcast range. Mountain ranges block FM broadcasts, AM broadcasts, and TV broadcasts, and other signals in the VHF and especially UHF ranges, respectively.
Sporadic E usually affects the lower VHF band I (TV channels A2–A6, E2–E4, and R1–R5) and band II (88–108 MHz FM broadcast band). A 1945 FCC engineering study concluded that E s caused interference issues 1% of the time for a station broadcasting at 42 MHz, but only 0.01% for one at 84 MHz.