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Archive for the Category ◊ Communications ◊

Internet slows down after Japan earthquake
Post by: techguy | 135 views

Internet connectivity has slowed to a crawl today as undersea cable were affected by the recent earthquake in Japan.

Reports from ComputerWorld indicates the Philippines is one of the affected countries:

At about 10:50 a.m. on Wednesday, local time, an alarm signaled a cable fault on Segment 7 of APCN2, which connects Hong Kong and Shantou, China. The disruption caused a temporary loss of service on the undersea link but all customers that use the cable were soon shifted to capacity on other cables, according to a source familiar with the situation.

The APCN2 cable is owned by a consortium of 26 telecom operators from 14 different countries. The cable links Singapore, Malaysia, the Philippines, Hong Kong, Taiwan, China, South Korea and Japan.

Looks like PLDT is the most heavily affected. Some sites appear down as DNS routing are not resolving.




Category: Communications  | Tags: , , ,  | Leave a Comment
Portable RF jammer
Post by: techguy | 226 views

The device is lightweight and small for easy camouflaging: it is the size of a pack of cigarettes.

An internal lithium-ion battery provides up to 2 hours of jamming (two bands, such as cell) or 4 hours (single band, such as cordless phone, GPS, WiFi, bluetooth, etc). The battery is rechargeable via a mini-USB connector or 4mm DC jack (a common size). Alternately, 3 AAA batteries may also be used.

Output power is .1W (high bands) and .3W (low bands). Effective range is approximately 20′ radius with well-tuned antennas. Less so with the internal antennas or poorly matched antennas. read more…




Category: Communications, Gadgets  | Tags: , , ,  | Leave a Comment
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