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Evrytania / LTE-Cell-Scanner

LTE SDR cell scanner optimized to work with very low performance RF front ends (8bit A/D, 20dB noise figure)
GNU Affero General Public License v3.0
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Core dump during frequency scan #5

Open akhepcat opened 10 years ago

akhepcat commented 10 years ago

I'm not sure if this is a CellSearch issue, or something to do with the radio/tuner, but I'll start here at the application layer and work my way down the model.

I'm using an ezcap dbv-tfm (rtl2832 with Elonics E4000 tuner) for scanning.

According to rtl_test -t, this device should scan from 52MHz - 2204MHz, with a bandgap of 1103MHz-1244MHz.

however, CellSearch core-dumps when I try to specify any frequency from 2147MHz-2204MHz.

Above the "max" of 2204MHz, it errors out normally.

using "multimode.py" i can easily scan above 2147MHZ, all the way to 2206.12G before i reach the dreaded "PLL not locked"

Not sure where to start looking for this within the code, but did want to get it documented in case others are seeing this.

mikerodrigues commented 10 years ago

I'm seeing the same: -Ubuntu 12.04 -rtl-sdr compiled from git

 $ ./src/CellSearch --freq-start 715e6 --freq-end 768e6                                                                                                     
LTE CellSearch v1.0.0 (release) beginning
 Search frequency range: 715-768 MHz      PPM: 120
 correction: 1
Found Rafael Micro R820T tuner
Examining center frequency 715 MHz ...
Examining center frequency 715.1 MHz ...
[1]    18578 segmentation fault (core dumped)  ./src/CellSearch --freq-start 715e6 --freq-end 768e6