[opendtv] Re: New iPhone antenna has same 'death grip'
- From: Ron Economos <w6rz@xxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Wed, 09 Feb 2011 06:16:22 -0800
A GSM iPhone is a 5 band gadget. 850, 900, 1800,
1900 and 2100 MHz. A CDMA iPhone is only a
2 band gadget. 800 and 1900 MHz.
http://www.apple.com/iphone/specs.html
Ron
On 2/8/2011 6:18 PM, Manfredi, Albert E wrote:
Mark Aitken wrote:
For reference...
http://en.wikipedia.org/wiki/List_of_United_States_wireless_communications_service_providers
Yes, perhaps, but it is just this type of reference that creates the confusion
among the innocent.
Whenever you see GPRS and EDGE, you are talking 2.5G, not 3G.
By the same token, whenever you see HSPA or UMTS mentioned, they are talking
about W-CDMA, even if they don't say so explicitly.
The differences between cdma2000 schemes of Verizon and the "other" W-CDMA schemes
are essentially trivial. Slight differences in chip rates, slight differences in RF channel
widths. Although cdma2000 can aggregate up from 1.25 MHz channel chunks, and I think the
AT&T scheme goes up from 5 MHz channels and no less than that.
In terms of modulation, it's all W-CDMA. GSM is a SERVICE, not a modulation scheme.
I don't see anything that supports the notion that the antennas can be very
different, aside from possibly the frequency bands Verizon and AT&T use for 3G.
Bert
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