Frequency Bands?

pkeno

Hi, just a quick question. What frequency bands do the Irish networks operate on? Would a phone on the 850/1900Mhz bands work here?

Any info much appreciated!

byrnefm

850/1900 works only in N.America (US + Canada) and parts of S. America. The rest of the (GSM) world uses 900/1800.

NiSmO

This post has been deleted.

JohnnieM

byrnefm wrote:

850/1900 works only in N.America (US + Canada) and parts of S. America. The rest of the (GSM) world uses 900/1800.

Actually Gsm uses 900 . 1800 and 1900.. but we only use 900 and 1800 in Ireland..

American system known as
CDMA
Code Division Multiple Access; There are a number of variants of CDMA (see W-CDMA, B-CDMA, TD-SCDMA et al)

elderlemon

not quite. 850 is used in the US because of problems with spectrum allocation. 900 was not avilable at the time GSM was first introducted so 850 was used. The service is GSM regardless of whether it uses 850,900,1800 or 1900. CDMA is a very different beast altogether.

JohnnieM wrote:

Actually Gsm uses 900 . 1800 and 1900.. but we only use 900 and 1800 in Ireland..

American system known as
CDMA
Code Division Multiple Access; There are a number of variants of CDMA (see W-CDMA, B-CDMA, TD-SCDMA et al)

byrnefm

In the US, it's also simply called 'GSM', much like it is here, too (ie. few make reference to the actual frequencies, just if it's tri-band, etc). The main difference in terminology there wrt GSM is that if a phone is from the US and it's a tri-band, it usually means that it covers the US GSM bands + the 1800MHz band, which isn't as widely used in Ireland. (The reason for that is that the 900MHz was introduced first here, the 1800MHz band came later on).

JohnnieM

In the mobile phone world, the term CDMA can refer to either the Code Division Multiple Access spread spectrum multiplexing technique, or the CDMA family of standards developed by Qualcomm, including cdmaOne (IS-95) and CDMA2000 (IS-2000 and IS-856).

The CDMA multiplexing technique existed long before Qualcomm used it for its IS-95 protocol. However, this protocol is now widely referred to as "CDMA" for its principal characteristic of using the CDMA multiplexing scheme to share multiple connections divided by different codes (PN sequences) over the same spectrum channel, as opposed to other spectrum division schemes

Qualcomm was able to introduce the first mobile protocol relying upon the CDMA multiplexing technique, associating the multiplexing technique with the name of the protocol.

Interim Standard 95 (IS-95), is the first CDMA-based digital cellular standard pioneered by Qualcomm. The brand name for IS-95 is cdmaOne. IS-95 is also known as TIA-EIA-95 It is a 2G mobile telecommunications standard that uses CDMA, a multiple access scheme for digital radio, to send voice, data and signaling data (such as a dialed telephone number) between mobile telephones and cell sites.