[osmocom-event-orga] issues with umts frequency 824-829 / 869-874

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Neels Hofmeyr nhofmeyr at sysmocom.de
Tue Dec 12 12:27:18 UTC 2017


On Tue, Dec 12, 2017 at 08:47:07AM +0100, Kévin Redon wrote:
> On Tue, Dec 12, 2017 at 08:30:38AM +0100, Alexander Couzens wrote:
> > the nano3g is accepting it when using the extended band 5 arfcn 1007
> > 1007 / 5 + 670.1 - 2.5 = 869.0
> > 1007 / 5 + 670.1 + 2.5 = 874.0
> 
> the license is for freq 824.0 to 829.0 MHz and 869.0 to 874.0 MHz. they are both 5 MHz wide, the 5 MHz needed by UMTS.
> thus (AFAIK) you have to use the center frequency to get the corresponding UARFCN.
> ideally it should be 826.5 MHz and 871.5 MHz.
> the closest in band 5 are UARFCN DL 4357 (871.4 MHz) or 4358 (871.6 MHz) and the corresponding UARFCN UL 4132 (826.4 MHz) or 4133 (826.6 MHz).
> we also tested successfully both UARFCN on the nano3G (you have to provide the DL) with neils.

"neels"

see also the pad...

~N
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