Adi Posted November 12, 2015 Share Posted November 12, 2015 Again I have no idea what either of you are on about? Neither have they, lol only joking Quote I really can't be ar**** with it anymore. Link to comment Share on other sites More sharing options...
james.wilson Posted November 12, 2015 Share Posted November 12, 2015 so best we have this bit of test gear generally. Is it something i could use and understand? Quote securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
petrolhead Posted November 12, 2015 Share Posted November 12, 2015 I suppose for 868 you would be as well just setting up a cheap rtl-sdr, i use the rf explorer for wifi interference issues as well so its worth it. I started a thread a while back about the rtl sdr. Quote Link to comment Share on other sites More sharing options...
james.wilson Posted November 12, 2015 Share Posted November 12, 2015 link? Quote securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
al-yeti Posted November 12, 2015 Share Posted November 12, 2015 So basically just another type of spectrum analyser Quote Link to comment Share on other sites More sharing options...
cybergibbons Posted November 12, 2015 Share Posted November 12, 2015 so best we have this bit of test gear generally. Is it something i could use and understand? I think so. It's just setting a frequency range, and it does the rest of it pretty much automatically. Problem is, once you've found there is another signal, what do you do? Quote I have a blog, some of which is about alarm security and reverse engineering:http://cybergibbons.com/ Link to comment Share on other sites More sharing options...
datadiffusion Posted November 12, 2015 Share Posted November 12, 2015 Yes, it's a bit like these companies that offer fullbody CT scans with no preexisting symptoms. Who's to say you won't see the same interference on another site that never has and never will have issues? Quote So, I've decided to take my work back underground.... to stop it falling into the wrong hands Link to comment Share on other sites More sharing options...
cybergibbons Posted November 13, 2015 Share Posted November 13, 2015 The one I've seen a few times is cheap baby monitors that transmit a continuous signal in 868MHz, they are quite obvious. But lots of other stuff is much harder to track down. The standard says that for grade 1 and 2, it's 31s out of 60s to signal jamming, 3 and 4, 11s out of 20s. Many of them also detect if messages are dropped, but only if they have 2-way RF. Quote I have a blog, some of which is about alarm security and reverse engineering:http://cybergibbons.com/ Link to comment Share on other sites More sharing options...
GalaxyGuy Posted November 13, 2015 Author Share Posted November 13, 2015 Sounds about right. I managed to jam the Honeywell in 31 seconds when testing earlier. Tried two portal versions with different firmwares and all did the same. No way of adjusting either. Quote Link to comment Share on other sites More sharing options...
cybergibbons Posted November 13, 2015 Share Posted November 13, 2015 The spec is any 31s out of 60s. Drive a jammer with a 50% duty cycle, period of about 0.05s, and the jamming detection won't go off, but nothing will get through. Quote I have a blog, some of which is about alarm security and reverse engineering:http://cybergibbons.com/ Link to comment Share on other sites More sharing options...
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