| Publisher | SWS Security | ||
|---|---|---|---|
| Format | HTML | Date added | 14 Aug 2003 |
| Topics | Bandwidth Issues | ||
| Downloads | 1 | ||
There is a matter of using several transmitters simultaneously in the same area which needs to be discussed. Sometimes you will have a job where you may want more than one transmitter active or installed on the same job. In some cases this can be done, but remember video transmission is not audio transmission, and a whole different set of rules apply. With any transmitter, be it audio, video, data or Morse code, the signal takes up a certain amount of space, called bandwidth. When you speak of a transmitter being on a certain frequency, actually the transmitter is only centered on that frequency. The signal occupies a certain amount of space above and below the center frequency. The wider the bandwidth, the wider the chunk of space a signal occupies. The one concept you need to understand regarding bandwidth is that the more information being transmitted, the wider the bandwidth. it is good to avoid dealing with suppliers who sell countersurveillance equipment as well as surveillance gear. There are few applications for countersurveillance equipment in the law enforcement circles. Countersurveillance equipment, especially the low end do it yourself stuff, is purchased largely by bad guys trying to stay ahead of law enforcement surveillance operations. A supplier who offers both is telling you he sells to both sides -- do you want to deal with scrotes like this who admit their dedication is to money rather than the law enforcement profession?
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