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Prevent Phone Monitoring With Digital Spread Spectrum
By Max Penn, Sat Dec 10th
Prevent phone monitoring with digital spread spectrum If you are using an analog cordless or cellular telephone,someone is listening to your conversations! You'll notice I did not say someone might be listening to yourtelephone conversations, or there is a possibility that yourtelephone conversations can be overheard.
Simply put, your telephone conversations are being monitored!Radio hobbyists, with their scanners being used as spyequipment, have the capability to listen to telephoneconversations and we must assume that a small percentage do fromtime to time. Beyond these hobbyists, however, is an underground culture ofscanner users who make specific efforts to monitor telephoneconversations. This underground culture ranges from individualswanting nothing more than to satisfy their personal curiosity,to news reporters lookng for leads, to private eyes gatheringinformation for a case, to criminals listening for credit cardsnumbers, SSN's, or other information to be used in thefurtherance of a crime. Beyond this, various law enforcement andsecurity agencies may monitor telephones for their own purposes. But wait, you say--it's illegal to monitor telephoneconversations. It's even illegal for the police to do so withouta warrant. True, it's illegal to monitor telephoneconversations, but do you really think that noone's listening? Alaw is nothing more than words and, in and of itself, doesnothing to prevent that which it proscribes. The chance ofgetting caught doing phone monitoring are almost nil, and whenhave you heard of anyone being prosecuted for monitoring acordless phone? HOW TO PREVENT IT One way to prevent monitoring of yourtelephone conversations is through the use of digital spreadspectrum technology. To understand this, we first need to beaware that telephones
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are either analog or digital. Analogtelephones are nothing more than radio transmitters sendingsignals between the telephone and the cell site in the case ofcellular phones and between the handset and the base plugged inthe wall socket in the case of cordless phones. Any radio scanner can be programmed to receive the cordlesstelephone frequencies. Newer scanners have the cellulartelephone frequencies block, but these frequencies can beunblocked by anyone with a basic knowledge of radio electronics.Digital telephones are also radio transmitters, but a digitalsignal is unintelligible when heard on an analog receiver. Ofcourse, a digital receiver would receive a digital telephonesignal were it programmed to the appropriate frequency. However,here is where spread spectrum technology comes in. Spread spectrum was first used during World War II as a methodto prevent torpedos being jammed en route to their target. Digital spread spectrum uses a signal spread over a number offrequencies. These signals are difficult to intercept anddemodulate and are resistant to jamming or interference. Thisprovides for a clearer and cleaner telephone signal, as well aspreventing monitoring of the signal itself. It is also worthnoting that cordless telephones are now available with anoperating frequency of 2.4 GHz. Since most scanners do notreceive into the gigahertz range, this gives additionalprotection against interception and phone monitoring of yourtelephone signal as it is transmitted between the handset andthe base.
About the author:Max Penn is the man behind the respected Spy equipmentbuying guide site. You can learn and benefit from his uniqueprivacy, surveillance and antisurveillance knowledge by signingup for his free spy equipment & techniques newsletter at Spy Gear Newsletter page
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