Also, a slight correction on the "1.9 GHz band." The Base stations transmit
from 1930 to 1990 MHz and receive at 1850 to 1910 MHz (80 MHz split) and are
not 'exclusively' GSM/GPRS/EDGE,etc. There is also CDMA, the (IS-)95 family
of standards, and may still be U.S. TDMA, the (IS-)54 and (IS-)136 family of
standards, operating in the 1.9 GHz Band. The 800 MHz Public Safety
Interference "solution" (recent FCC Ruling) has extended the each of the 1.9
GHZ band ranges by 5 MHz (to 1995 and 1915, respectively) for Nextel in
exchange for Nextel vacating channels in the 851-866/806-821 range.
I am not aware that the 2110 to 2170 MHz range is being used by any cellular
in the U.S. (yet).
ALSO, GSM/GPRS/EDGE,etc. 'modulation' and channelization is now being
deployed in the "800" or "850" MHz band in the U.S. The 'authorized'
frequencies are Base station Transmit: 869 to 894 MHz and Receive: 824 to
849 MHz (45 MHz split).
Finally...don't forget that there is a "700 MHz band" for Land Mobile and
Common Carrier radio systems coming in the U.S. (once TV Channels 60-69 are
cleared). This represents 746 to 806 MHz...30 MHz split for systems that
operate with Frequency duplex.
73, JK
----- Original Message -----
From: "jeff millar" <wa1hco@adelphia.net>
To: <k3lr@k3lr.com>
Cc: "John Allen" <jallen@vhfcom.com>; <mclarson@rcc.com>;
<w3sz@comcast.net>; "'VHF Contesting'" <vhfcontesting@contesting.com>;
<vhf@w6yx.stanford.edu>
Sent: Monday, October 11, 2004 07:28
Subject: Re: [VHFcontesting] Re: [VHF] Cell Sites
> "SMR B" band Basestations occupy 935-940 Tx and 896 to 901 Rx. Nextel
> has begun expanding into that band for increased capacity.
>
> jeff, wa1hco
>
> Tim Duffy K3LR wrote:
>
> >900 and 1800 MHz are not used in the USA. Several sites do use 2.1, 2.4,
> >5.6 and
> >5.8 GHz for microwave connections from the cell sites to the switching
> >centers.
> >
> >73!
> >Tim K3LR
> >
> >John Allen wrote:
> >
> >
> >
> >>Roger et al - Please be aware of the different bands used, based on the
> >>cell
> >>company and the technology that they use.
> >>
> >>Cingular, AT&T and others are using GSM/GPRS/Edge/UMTS (Coming) on
> >>1920-1980
> >>MHz paired with 2110 to 2170 MHz. (known as the 1.9 GHz. band). The
> >>other
> >>bands are 850, 900, and 1800 MHz. I don't think that 900 is used in
> >>the
> >>USA.
> >>
> >>73, John, K1AE
> ------
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