Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.
Hertz
Posted on 25-Feb-2003 18:27 | Filed under: Glossary


A unit for expressing frequency which is the number of times a wave-like radio signal changes from maximum positive to maximum negative charge per second. 1 Hz = 1 cycle per second. 1 kilohertz (kHz) = 1,000 Hz; 1 megahertz (MHz) = 1,000 kHz or 1,000,000 Hz; 1 gigahertz (GHz) = 1,000 MHz or 1 million kHz or 1 billion Hz. AMPS (analog) cellular phones in Canada and the US use the 800 MHz band. Digital phones use either the 800 MHz or 1900 MHz (or 1.9 GHz) frequencies. Specifically, CDMA and TDMA use either 800 or 1900 MHz; iDEN uses only 800 MHz; GSM uses only the 1900 MHz spectrum in North America. GSM uses 900, 1800, and/or 1900 MHz on other continents.


Trending now »

Hot discussions in our forums right now:

Warped post on 8 month old fence, who's responsible for repair?
Created by Paul1977, last reply by Paul1977 on 17-Nov-2018 14:12 (61 replies)
Pages... 3 4 5


Now I know why at peak times two buses turn up, the first full and the second empty
Created by lchiu7, last reply by Buster on 18-Nov-2018 20:47 (14 replies)

Spark VDSL Upload Speed Issues Vigor 2860 + Troubleshooting Info
Created by bener, last reply by bener on 15-Nov-2018 12:34 (29 replies)
Pages... 2


Low voltage ac to dc rectifier
Created by hio77, last reply by hio77 on 18-Nov-2018 22:10 (11 replies)

Geekzone giveaway: Nokia 7.1 smartphone
Created by freitasm, last reply by gjm on 18-Nov-2018 17:26 (149 replies)
Pages... 8 9 10


Controlled/uncontrolled metering (electricity)?
Created by danepak, last reply by danepak on 16-Nov-2018 23:58 (11 replies)

Joining Orcon but concern about phone line
Created by super12345, last reply by super12345 on 15-Nov-2018 17:45 (11 replies)

Spark unlimited mobile plan update
Created by freitasm, last reply by Coil on 15-Nov-2018 10:18 (23 replies)
Pages... 2