4 Dec
2020
4 Dec
'20
8:42 a.m.
No, AFAIK that value is the attenuation in the PGA stage, with 0 being no attenuation. You
will need to measure the output power at the required frequency yourself, these devices
are not precision calibrated.
Depending on frequency, the Lime boards can output as high as 15 dBm CW with 6-9 dBm being
the medium value across the whole supported spectrum.
Adrian
On December 3, 2020 9:04:22 PM UTC, Mario Lucas <mariolucas75(a)mail.ru> wrote:
Dear forum,
I am setting / running GSM network with LimeSdr and Osmo-packgaes:
osmo-bts-trx
osmo-bsc
osmo-hlr
osmo-msc
osmo-pcu
osmo-stp
osmo-trx-lms
and as i understand the only option to vary / set up output power is
through the → osmo-bsc →
trx 0
nominal power 23
! to use full TRX power, set max_power_red 0
max_power_red 20
So does this mean that 23-20=3 dbm?
With this set up i instruct LimeSDRmini to transmit 3dbm signal into
the air? If so — when i brought phone just into the very vicinity of
LimeSDR antena (touching phone and SDR antena) on my smartphone screen
i got signal -60 dbm …why did i get such a low figure ?
Also if you know is there any supporting application / software that
can tell at what dBm LimeSDRmini is sending RF into air?
--
Mario Lucas