During BERSIH 3.0 while I was waiting for the rally to start at Jalan Sultan, I noticed that there was no line on my handphone and therefore could not communicate with others. Now I know why. The sneaky authorities had deployed broadband/handphone/mobile jammer on the street.
Here is one spotted at Jalan Leboh Ampang in front of HSBC:
It seems such jammers are banned in many countries and only allowed for military or prisoners situations but deployed in Malaysia to disrupt communications during BERSIH 3.0
You can see a similar one over at