Tell me this - what frequency did you tell it to tune to using the command line arguments?

Does the line that says "[R820T] PLL not locked for 3570434 Hz!" give you any hints as to what may have gone wrong?

As has been suggested, check out the command line arguments before running the program.

On 8 February 2016 at 09:25, Sean Kealy superstardodge@yahoo.com [op25-dev] op25-dev@yahoogroups.com wrote:

When I open waterfall i get the following pasted below in terminal, and the waterfall doesnt do anything, do I have to open grc in terminal first somehow? thanks sean

root@kali:~# ./op25_grc.py Using Volk machine: sse3_64_orc RTL2832 Source block configuration: Read length (bytes): 262 Buffer enabled: yes Buffer multiplier: 8 Buffer size (samples): 1048 Samples per read: 131 Buffer level: 50.0% Successfully initialised demod: "ezcap EzTV" Probing "e4k"...not found. Probing "fc0013"...not found. Probing "fc2580"...bad check value. Probing "r820t"...found. Found RTL2832 device: ezcap EzTV (tuner: Rafael Micro R820T) Sample rate range: 900001 - 3200000 Hz Crystal frequency: 28800000 Hz [r820t] Initialised (default bandwidth: 0 Hz) Wait delay: 0.196 ms [R820T] PLL not locked for 3570434 Hz! work wants more than the buffer size! Capture threading starting: 7f904e7fc700 rOShort bulk read: given 0 bytes (expecting 262) rBlibusb error: the device has been disconnected [-4] Capture threading aborting due to libusb error: 7f904e7fc700 No longer running after packet notification - signalling EOF...