"But if they had had the digital radios, they would have more problems because the repeater system there was operating on an analog mode".
Nonetheless, as would be expected given the relationship between nonword repetition and language learning, the poor nonword-repeaters completed fewer years of education and had more evidence of language and literacy problems, as assessed by an in-house spelling test, and two subtests from the Test of Word Reading Efficiency (TOWRE) [51].
Among them one pair of non-repeater pupils each came from three tutors with no pupils having become repeaters, one repeater pupil each came from two tutors with no pupils having become non-repeaters, one non-repeater pupil and one repeater pupil came from one tutor, and one non-repeater pupil and four repeater pupils came from one tutor.
To fill in coverage gaps, Sirius will have 100 terrestrial repeater stations placed throughout the country to relay the service to the car, and smaller repeaters at major tunnels.
The World Trade Center, for example, had in-building repeaters, but they either did not work properly, were damaged or were not all turned on Sept. 11.
D-Link (www.dlink.com) sells the AirPlus Enhanced 2.4 Gigahertz Wireless Range Extender, which has a repeater function, for $75.
Each cable has a repeater ever 80 KM that pushes the signal further on its journey down the cable.
The company will also have a network of repeaters, and it will employ similar technology to accommodate brief coverage lapses.
"I have tested other minute repeaters and many have a lower sound, and this makes such a beautiful chime, almost like a timpani," Mr. Leung said.
Wilkins Peak also has repeater towers for local police, fire, and EMS services.
