Official bladeRF forum

Hi,

on my working Kubuntu system, about two weeks old, I updated bladeRF and gr-osmosdr/iqbal, and now I have zero reception with gqrx. Just a flat line, without any signal but spurs. Reverting back to previous versions restored operation.

I am using a 115k-bladeRF with latest firmware and FPGA files.

Any ideas?

Ralph.

Hi,

thank you for the fast reply. I am a bit buy these days, but tomorrow and the day afterI should be able to spend some time on this, will be on a train for a few hours

I do not have the hardware with me right now, but at least the software, so here the last log output of the version I am using without those problems:

commit e37a34ca3305a06062cc87d4de16d94d4b573acc
Author: Jon Szymaniak <[email protected]>
Date: Tue Feb 4 21:07:08 2014 -0500

libbladeRF: Fixed uninitialized bandwidth in repeater test

I must admit I am not a programmer, and I am not very skilled with all this git stuff, but when you give me some hints how to "bisect" through the versions then I will try to follow this path At the moment I do not use any GUI for git, just the command line version, OS is a Kubuntu 13.10 machine.

At least I could narrow it down to bladeRF, the problems happen right after I update it. Clean build changes nothing. The interesting thing, when I have a frequency of 806 MHz I can see the two local LTE carriers, weak and with higher noise than normal. When I change the frequency to 945 MHz what is usually full of GSM carriers - nothing. The same applies to 1820 MHz, normally full of GSM and LTE, but with this version nothing. Playing with the gain sliders has an influence on noise, but nothing else.

Ralph.

Gnuradio is

commit cf8997ccc1e9c543aa234e561e7f002a176e13dc
Merge: 7f57cf7 1366dc2
Author: Tom Rondeau <[email protected]>
Date: Sun Feb 16 16:10:16 2014 -0500


gr-osmosdr is

ommit 24f6f88a37fccd36aa05f08de3f7f4289ff0607c
Author: Dimitri Stolnikov <[email protected]>
Date: Sun Jan 26 19:53:44 2014 +0100

(latest is only possible after updating bladeRF)


gr-iqbal is

commit d4fd4dd41ead825a25729021023dda3db51d8b85
Author: Sylvain Munaut <[email protected]>
Date: Thu Oct 24 00:07:02 2013 +0200


Later I will do some tests what bladerf version breaks things and let you know.

Ralph.

This is the last working one:

0655e83d7bb94ea5d0e79c2805293eda16e7fd6b

Next one, 9ee9c..., shows the problem.

Ralph.

Hey, great! This was also my thought - something with switching over the RF low/high border, wanted to narrow it down to the certain frequency, but you were faster. I will test it this evening, forgot the hardware at home today

Ralph.

Everything is fine now and works as before - thank you very much for the quick fix!

Ralph.