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- Joined: Sat Mar 12, 2016 3:43 pm
I've been following a few tutorials to get the dongle to be used as an iGate on a raspberry pi. see herehttp://www.w4dv.org/wp-content/uploads/ ... TL-SDR.pdf
Everything seems to go ok but there is nothing being returned when I try and use kal to listen to a GSM900 signal that I know is good and strong (I can see the mast and know its a GSM900 tx) here's the output
Code: Select all
Found 1 device(s):
0: Generic RTL2832U OEM
Using device 0: Generic RTL2832U OEM
Found Rafael Micro R820T tuner
Exact sample rate is: 270833.002142 Hz
[R82XX] PLL not locked!
kal: Scanning for GSM-900 base stations.
I'm not too concerned that pll lock is not working but also a bit concerned that there seems to be no audio detected. Any suggestions?
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Have you tested that you are receiving the signal properly with a program like GQRX or SDR#? Check to see if the signal look good and strong, and not overloaded first. If its too strong it may not work.
PLL not locked is a normal error, it just means that that particular frequency could not be locked, but it will move on to a nearby frequency that can be locked.
Also kal will not output any audio, its a tool for finding GSM stations, and also determining the PPM offset on RTL-SDR dongles.