From: Petter Reinholdtsen Date: Fri, 29 Sep 2017 08:28:40 +0000 (+0200) Subject: Another link. X-Git-Url: https://pere.pagekite.me/gitweb/homepage.git/commitdiff_plain/6640501e2420acb05b41fb07168ba78be15f97d0 Another link. --- diff --git a/blog/data/2017-09-29-gsm-imsi-catcher.txt b/blog/data/2017-09-29-gsm-imsi-catcher.txt index 3af98b132a..65c7c403fb 100644 --- a/blog/data/2017-09-29-gsm-imsi-catcher.txt +++ b/blog/data/2017-09-29-gsm-imsi-catcher.txt @@ -1,6 +1,6 @@ Title: Visualizing GSM radio chatter using gr-gsm and Hopglass Tags: english, debian, personvern, surveillance -Date: 2017-09-29 10:25 +Date: 2017-09-29 10:30

Every mobile phone announce its existence over radio to the nearby mobile cell towers. And this radio chatter is available for anyone @@ -34,8 +34,9 @@ Buster/Testing with several (five, I believe) RTL2838 DVB-T receivers connected and visualize the visible cell phone towers using an English version of Hopglass. A fairly powerfull machine is needed as the -grgsm_livemon_headless processes converting the radio signal to data -packages is quite CPU intensive.

+grgsm_livemon_headless processes from +gr-gsm converting +the radio signal to data packages is quite CPU intensive.

The frequencies to listen to, are identified using a slightly patched scan-and-livemon (to set the --args values for each receiver),