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 | Tags 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.






comments powered by Disqus


Trending now »

Hot discussions in our forums right now:

The President Of The USA: Donald Trump
Created by TimA, last reply by driller2000 on 25-Apr-2017 08:10 (4057 replies)
Pages... 269 270 271


New Immigration Changes
Created by Oriphix, last reply by joker97 on 21-Apr-2017 21:01 (40 replies)
Pages... 2 3


The case for mandatory internet filtering
Created by shanehobson, last reply by Rikkitic on 25-Apr-2017 09:22 (73 replies)
Pages... 3 4 5


Need Help With Unstable Broadband on Old Exchange
Created by da5id, last reply by hio77 on 24-Apr-2017 17:59 (17 replies)
Pages... 2


recommend me a ADSL 2+ modem?
Created by tommyboy, last reply by tommyboy on 24-Apr-2017 20:08 (32 replies)
Pages... 2 3


Spark move to IP-based voice
Created by freitasm, last reply by old3eyes on 22-Apr-2017 07:38 (61 replies)
Pages... 3 4 5


People Are Roasting New Zealand to Oblivion
Created by Mspec, last reply by TimA on 24-Apr-2017 14:03 (12 replies)

Highlander vs Santa Fe/Sorento
Created by Dulouz, last reply by blakamin on 22-Apr-2017 20:11 (22 replies)
Pages... 2