PS C:\Users\root\Desktop\SDR\kalibrate-rtl-win32_bin_05062015> ./kal.exe -g 48 -s EGSM -d 1
Found 2 device(s):
0: Generic RTL2832U OEM
1: Generic RTL2832U OEM

Using device 1: Generic RTL2832U OEM
Found Rafael Micro R820T tuner
Exact sample rate is: 270833.002142 Hz
[R82XX] PLL not locked!
Setting gain: 48.0 dB
meh: Scanning for E-GSM-900 base stations.
E-GSM-900:
chan: 4 (935.8MHz – 274Hz) power: 175474.88
chan: 6 (936.2MHz – 162Hz) power: 673695.85
chan: 27 (940.4MHz + 413Hz) power: 155849.76
chan: 29 (940.8MHz – 395Hz) power: 173135.51
chan: 33 (941.6MHz – 192Hz) power: 137247.04
chan: 41 (943.2MHz – 594Hz) power: 168626.29
chan: 43 (943.6MHz – 570Hz) power: 292251.33
chan: 47 (944.4MHz – 476Hz) power: 175747.68
chan: 57 (946.4MHz – 762Hz) power: 375747.40
chan: 65 (948.0MHz – 344Hz) power: 286698.17
chan: 69 (948.8MHz – 228Hz) power: 191098.98
chan: 78 (950.6MHz – 180Hz) power: 423263.39
PS C:\Users\root\Desktop\SDR\kalibrate-rtl-win32_bin_05062015> ./kal.exe -g 48 -c 6 -d 1
Found 2 device(s):
0: Generic RTL2832U OEM
1: Generic RTL2832U OEM

Using device 1: Generic RTL2832U OEM
Found Rafael Micro R820T tuner
Exact sample rate is: 270833.002142 Hz
[R82XX] PLL not locked!
Setting gain: 48.0 dB
meh: Calculating clock frequency offset.
Using GSM-900 channel 6 (936.2MHz)
average [min, max] (range, stddev)
– 174Hz [-196, -154] (42, 12.634075)
overruns: 0
not found: 0
average absolute error: 0.186 ppm
PS C:\Users\root\Desktop\SDR\kalibrate-rtl-win32_bin_05062015> ./kal.exe -g 48 -c 78 -d 1
Found 2 device(s):
0: Generic RTL2832U OEM
1: Generic RTL2832U OEM

Using device 1: Generic RTL2832U OEM
Found Rafael Micro R820T tuner
Exact sample rate is: 270833.002142 Hz
[R82XX] PLL not locked!
Setting gain: 48.0 dB
meh: Calculating clock frequency offset.
Using GSM-900 channel 78 (950.6MHz)
average [min, max] (range, stddev)
– 194Hz [-273, -115] (158, 40.121868)
overruns: 0
not found: 346
average absolute error: 0.204 ppm
PS C:\Users\root\Desktop\SDR\kalibrate-rtl-win32_bin_05062015> ./kal.exe -g 48 -c 41 -d 1
Found 2 device(s):
0: Generic RTL2832U OEM
1: Generic RTL2832U OEM

Using device 1: Generic RTL2832U OEM
Found Rafael Micro R820T tuner
Exact sample rate is: 270833.002142 Hz
[R82XX] PLL not locked!
Setting gain: 48.0 dB
meh: Calculating clock frequency offset.
Using GSM-900 channel 41 (943.2MHz)
average [min, max] (range, stddev)
– 651Hz [-705, -577] (128, 34.583942)
overruns: 0
not found: 8
average absolute error: 0.690 ppm