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

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Kévin Redon ml at mail.tsaitgaist.info
Tue Dec 12 07:47:07 UTC 2017


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.



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