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 your telephone conversations,
or there is a possibility that your telephone conversations can be overheard.
Simply put, your telephone conversations are being monitored! Radio hobbyists,
with their scanners being used as spy equipment, have the capability to listen to telephone conversations and we must assume that a small percentage do from time to time.
Beyond these hobbyists, however, is an underground culture of scanner users who make specific efforts to monitor telephone conversations. This underground culture ranges from individuals wanting nothing more than to satisfy their personal curiosity, to news reporters lookng for leads,
to private eyes gathering information for a case, to criminals listening for credit cards numbers, SSN's,
or other information to be used in the furtherance of a crime. Beyond this, various law enforcement and security agencies may monitor telephones for their own purposes.
But wait, you say--it's illegal to monitor telephone conversations. It's even illegal for the police
to do so without a warrant. True, it's illegal to monitor telephone conversations, but do you really
think that noone's listening? A law is nothing more than words and, in and of itself, does nothing
to prevent that which it proscribes. The chance of getting caught doing phone monitoring are almost
nil, and when have you heard of anyone being prosecuted for monitoring a cordless phone?
HOW TO PREVENT IT
One way to prevent monitoring of your telephone conversations is through the use of digital spread spectrum technology. To understand this, we first need to be aware that telephones
are either analog or digital. Analog telephones are nothing more than radio transmitters sending signals between the telephone and the cell site in the case of cellular phones and between the handset and the base plugged in the wall socket in the case of cordless phones.
Any radio scanner can be programmed to receive the cordless telephone frequencies. Newer scanners have the cellular telephone frequencies block, but these frequencies can be unblocked by anyone with a basic knowledge of radio electronics. Digital
telephones are also radio transmitters, but a digital signal is unintelligible when heard on an analog receiver. Of course, a digital receiver would receive a digital telephone signal 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 method to prevent torpedos being jammed en route to their target.
Digital spread spectrum uses a signal spread over a number of frequencies. These signals are difficult to intercept and demodulate and are resistant to jamming or interference. This provides
for a clearer and cleaner telephone signal, as well as preventing monitoring of the signal itself. It is also worth noting that cordless telephones are now available with an operating frequency
of 2.4 GHz. Since most scanners do not receive into the gigahertz range, this gives additional protection against interception and phone monitoring of your telephone signal as it is transmitted between the handset and the base.
About the Author
Max Penn is the man behind the respected Spy equipment buying guide site.
You can learn and benefit from his unique privacy, surveillance and antisurveillance knowledge
by signing up for his free spy equipment & techniques
newsletter at Spy Gear Newsletter page |
|
 |
What is VoIP?
What is VoIP? VoIP is an acronym for voice over internet protocol. A VoIP, in essence, is a computer softphone that allows you to make phone calls from your computer to anyone in the world, e.g., PC to PC, PC to landlines, or PC to cell phones. The...
...Read More
Free Internet telephony made easy! conaito VoIP ActiveX SDK
conaito VoIP ActiveX library for developers of VoIP audio applications, such as voice chat, conference, VoIP, providing real-time low latency multi-client audio streaming over UDP/IP networks. Includes efficient components for sound recording,...
...Read More
Mind Mapping
Ever been on a project where you had trouble keeping all the 'if' questions straight? "If this happens," you say, "we'll do one thing. But, if that happens, we'll do something else instead, but only on a Wednesday." In cases like these, especially...
...Read More
Persuasive Speech Topic Ideas
Get Your Persuasive Speech Topic Here! What makes a good persuasive speech topic? Experts will tell you that it should be a conversial subject. Why? Well, if it's not controversial, no one, including yourself, will care if anyone gets...
...Read More
Cell Phones and TV
What if you want to catch up on the morning TV news passing the time away on your morning train commute into the city. Stuck in line somewhere and want to find out how your favorite sports team is doing. Well, an alternative that is coming soon...
...Read More
|
