Today we are going to touch on and dig out some old, published articles here on blogElectronica.com from several months ago, nearly two years ago. Do you remember this article from the end of 2009?

http://www.blogelectronica.com/cinterion-eu3/

In this article, I talked about the imminent appearance of the new EU3 Cinterion module highlighting that one of its greatest strengths was that it supported the new 900MHz UMTS band that was approaching. The following is worth remembering from this article:

“From a technical point of view it’s better because it offers a greater coverage and penetration than the current UMTS2100, which is ideal for rural coverage and even coverage in cities where the greater the ability to penetrate, the better the coverage in buildings.

It’s obvious from an economic point of view.  One reason is that in order to have a greater scope to cover a specific area, you need to install less base stations with UMTS900 than UMTS2100. Another reason is that the current GSM stations are still valid and they only require small, inexpensive adaptations unlike the UMT2100.

I only have one more tip for those of you who are going to start a new project today with GSM/GPRS modules and who are looking into the future and who are evaluating modules from different manufacturers. The tip is that you read the announcement in the news about the new EU3 module published on Cinterion’s website. Pay special attention to this title, “Cinterion Announces First UMTS Module to Support Seamless 3G Transition for Existing GPRS/EDGE Designs”.

3g-900mhz-umts

A little later in the article from May 2010:

http://www.blogelectronica.com/banda-umts-en-900mhz/

We talked about everything more deeply on a technical level with the 3G 900MHz (it is recommended reading). One thing to note from this article, as many people asked and will ask this question, is that both in the text as well as in reader’s comments is the clarification that current GSM/GPRS technology (at 900MHz) will coexist with the new 900MHz UMTS.

Finally 10 months ago I posted an article on the EU3 module’s TCP/IP stack:

http://www.blogelectronica.com/eu3-modem-hsdpa-usb-rs232/

Note the last paragraph where it says:

“Finally here is a detail worth noting. The same B2B connector and (nearly) the same pinout as in the TC63i have been used with the EU3 Cinterion module. Therefore, whoever is designing a board to use with the TC63i, I recommend you to take a look at an application note called EU3_e-migration (which is part of the EU3 documentation) as it shows small differences to consider when moving from the TC63i to the EU3. Or rather, this document allows us to design a board in a way that we can use the TC63i or EU3 interchangeably, with obvious advantages that we can use in the future. If some of you are undecided whether to use a MC55i or a TC63i with a new design (I see this happen often), you should consider the compatibility with the EU3. At least it helped me to decide.”

Those who betted on the new EU3 Cinterion module or made a design with a TC63i and considered the application notes to make a compatible circuit like we talked about here, they can start to reap the benefits from the 9th of September (because it’s an implementation process that will last a couple of years). :)

Here you have more information of the implementation of the new 900MHz UMTS:

http://bandaancha.eu/articulo/8031/3g-mejorara-drasticamente-cobertura-partir-9-septiembre

Well, I hope that this article has been interesting for some of you and satisfying for others who have made the right choice. I will now continue working on the new version of the MTXTunnel v6.0 manual which will be out soon. :)

 

 


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