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I am using kalibrate with Ettus USRP N210. I want to scan GSM900 channels available. However after successfully setting up the environment, I am unable to get enough information.
./kal -s GSM900 only shows 2-3 channels.

To verify the result, i used kalibrte-rtl with RTL-SDR and surprizingly I got 10 channels.
According to my knowledge, USRP bandwidth is larger than RTL-SDR then why I am not getting better results using USRP? Is there something missing or need some calibration?

./bootstrap does not work for me, without that ./configure does not work either.

Is there a step missing?

Hey,

I want to use OpenBTS-4 with USRP2 kit without using an external clock reference just like when we use openbts-uhd with usrp2 kit and need no external clock as resampling is done in the code. Please guide me how can I use this kalibrate-uhd code to achieve it or help me if there is any other better way. Thank you!

Regards,

Hi,

When trying to scan the E-GSM-900 band, the program exits immediately.

This same bug was fixed in this commit of kalibrate-rtl:
steve-m/kalibrate-rtl@ed733cc
I've tried applying it to kalibrate-uhd without further changes and it seems to work OK.

Thanks.

Does not work with RTLSDR v4

Will there be any updates to support it ?

Hi, I get a segfault using kal.
export KAL_DEVICE=addr=192.168.10.2
./kal -s GSM900 -R "B:0"

$ ./kal -D -s GSM900 -R "B:0" 139 ↵
linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.007.002-0-unknown

debug: FPGA Master Clock Freq: 0
debug: External Reference : No
debug: RX Subdev Spec : B:0
debug: Antenna : RX2
debug: Gain : 0.450000
-- X300 initialization sequence...
-- Determining maximum frame size... 1472 bytes.
-- Setup basic communication...
-- Loading values from EEPROM...
-- Setup RF frontend clocking...
-- Radio 1x clock:200
-- Initialize Radio control...
-- Performing register loopback test... pass
-- Sync DAC's.
-- Performing register loopback test... pass
-- Sync DAC's.
-- Initializing clock and PPS references...
-- References initialized to internal sources
[1] 21290 segmentation fault (core dumped) ./kal -D -s GSM900 -R "B:0"

an idea ?