Lucency is a technical term for an area that lets x-rays through tissue and appears darker on the picture. Peri-screw lucency is a result of having had a peri-screw insert â¦ ed into the bone, possibly due to an accident.1 person found this useful. They're is a contraction or shortening of 'they are'.   . Their means belonging to people or things previously mentioned or  easily identified (Your parents do not look similar, except for  their noses).
Amplified antennas are best for the suburbs and rural areas, where a TV signal has to travel a greater distance. They also tend to perform better in rainy or stormy conditions, which can also affect how well a signal travels.
King Controls, a manufacturer of RV satellite TV antennas, recently released an amplified HD over-the-air TV antenna head called JACK that is designed to mount on a Winegard Sensar lift mechanism. JACK covers UHF and VHF digital broadcast bands and, according to the company, offers improved UHF reception where 80 percent of the new local digital broadcasts are assigned.