This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/OpenBSC@lists.osmocom.org/.
Dieter Spaar spaar at mirider.augusta.deHello Harald,
On Fri, 19 Jun 2009 00:22:22 +0200, "Harald Welte" <laforge at gnumonks.org> wrote:
>
> If we once again combine this with our knowledge, i.e.
>
> > BS-11 30mW 15dBm=09
> > BS-11 80mW 19dBm
> > BS-11 250mW 24dBm
> > BS-11 2W 33dBm
> > nanoBTS 900 20dBm
> > nanoBTS 1800 23dBm
>
> And we set the BS power level in channel activation as 0xf (i.e. -30dB),then
> we get something like -15dBm for BS-11/30mW and -10/-7dBm for the nanoBTS.
> That would still be _very_ low.
A few numbers from a measurement:
nanoBTS 1800, ARCN 840, no voice/data traffic:
NM_ATT_RF_MAXPOWR_R RF output
0 20 dBm
1 18 dBm
2 16 dBm
4 12 dBm
8 4.4 dBm
9 2.0 dBm
10 0.4 dBm
11 -1.6 dBm
12 -3.6 dBm
The power measurement of my equippment is not calibrated and the
cable I used is not one of the best, so it could cause 3 dB
loss. However one can see the tendency. Values larger than 12
for NM_ATT_RF_MAXPOWR_R are not supported, they result in an
error.
I will see if I find some time for measurements with the BS-11.
Best regards,
Dieter
--
Dieter Spaar, Germany spaar at mirider.augusta.de