What is a ghz ?

Question

I need to get a digital cordless phone and I noticed that each phone that I look at has a different ghz ranging from 1.6 ghz to 5.6 ghz. I currently have a analog cordless phone that worked fine until we went broadband with our computer - and now the phone has terrible reception and was told a digital cordless phone will fix the problem, can anyone help me by explaining what I should be looking for ?

Answer 1

all the answers have correct info, jeff is closest to answering the question. Except that the higher the frequency the SHORTER the range because objects block the signal more effectively. I can go about 200 yds thru houses and trees with a 900MHz phone but only about 50 yds with a 2.4GHz phone with no trees or other houses in the way, and I don't have a 5GHz unit.
I have had little interference with any of them but it is known to happen especially with wifi installations and 2.4GHz phones as both use the same 2.4 GHz band. 900 MHz phones are pretty rare now so I would go with a 5GHz quality phone. I personally don't like Uniden or Seimens. I have two Vtech 2.4GHZ phones and have no interference unless I get REAL close to my computer/wireless units.

Answer 2

Robbie's answer is correct. But here are some things to think about to help you choose.

Most phones in the US are 900 MHZ, (that is 0.9 GHz), 2.4 GHz, or 5.8 GHz.

Higher frequencies, can be transmitted farther and with better quality at a given power. But in general mass market cordless phones won't beat a wired phone regardless of their frequency.

However higher frequency phones do have advantages. The 900 MHz and 2.4 GHz bands are being used more and more for other devices like baby monitors, Bluetooth, wireless LANs, etc. So there is an upside to selecting a 5.8 GHz phone. If you do look for a 5.8 GHz phone, be aware that some only use 5.8GHz to transmit from the base unit to the phone, and use either 900 MHz or 2.4 GHz going from the phone back to the base. You will find this more often on lower end phones. Read your packaging carefully to know what you are buying.

You can find a more in-depth discussion of cordless phones here: http://en.wikipedia.org/wiki/Cordless_phone

Answer 3

Well Robbie's answer is correct, it won't help you with a phone. He was talking about computers, you need a phone. I have a 2.4 Ghz phone and it works just fine for me. The higher the number is the higher the frequency. My 2.4 Ghz phone work real well for me. I have a decent size three bedroom house, and a yard. My phone works everywhere on/in my property.

Answer 4

Abbreviation for gigahertz. One GHz represents 1 billion cycles per second. The speed of microprocessors, called the clock speed, often is measured in gigahertz. For example, a microprocessor that runs at 200 GHz executes 200 billion cycles per second. Each computer instruction requires a fixed number of cycles, so the clock speed determines how many instructions per second the microprocessor can execute. To a large degree, this controls how powerful the microprocessor is.

Answer 5

ghz stands for gigahertz. Which means it sends out a signal at so many billion cycles per second. In THEORY the higher the number the better the signal. It really shouldn't matter. And having braodband DSL shouldn't effect your phone if you have the filter on your phone line.

Answer 6

the frequancy, 100 Megahetz is 1 gigahertz then terahertz.