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Possible Causes Of Alien
Metallic Telephone Voices

By Ted Tweitmeyer
11-29-7

Many rumors have been circulating around the internet regarding "alien metallic voices" on telephone calls. For those unfamiliar with how the phone system actually works, it can create a mystery and imaginations can run wild. Just as with the internet where few will accept the fact that routing computers owned by the National Security Agency IS the real internet.
 
None of the rumors about alien voices on telephones have ever have explored the possible causes for such distorted audio. It's time we look at some of the causes for this strange phenomenon. (I will try to keep the technical level of this to a minimum here and use basic terminology.)
 
To begin with, we must first explore how telephone converstations work. Telephone conversations consist of two distinct voice paths created at each end in the phone company, and are not combined together into one signal until they reach the subscriber loop circuitry in the phone company at each end of the phone call. This is the current loop circuitry which powers your telephone at your home or office. Through random data errors or faulty equipment, one can hear be connected to a dead or unused carrier which has no real audio, or perhaps only contains just noise. A defect in call routing can also sound extremely distorted and unintelligible. The principle of two separate audio channels is important to remember as we explore further.
 
HOW TELEPHONES AND SATELLITES WORK
 
For many decades, dedicated telephone satellites like Aurora which served Alaska, and some of the Telstar, Galaxy and others divided each entire transponder bandwidth (there are usually 24 transponders) into upper and lower sidebands. Often older cable satellites which are losing power have been relegated to telephone use for a few years, before being taken completely out of service. Newer C-band satellites have more than 24 transponders, but we'll use 24 for our discussion here.) Ku band satellites have 36 or more transponders.
 
Each of the 24 transponders (which have had just 4 watts of RF power which usually required a 10ft. dish) supported thousands of simulataneous phone calls. On a given frequency (channel) for one transponder, an upper sideband carries one direction of the converstation, and a lower sideband carries the other direction for one conversation. These are actually FM signals. When a phone call is placed and computers in the phone system route the call through a given satellite, touch tone groups are first transmitted which identify who placed the call, and of course the called party. Touch tone routing codes are also used by intelligence agencies to record telephone calls.
 
COMPLETE LACK OF SECURITY ON YOUR TELEPHONE
 
One can actually hear telephone calls and touch tone codes using a regular shortwave receiver with SSB capabilty, connected to the unclamped video output of an ordinary C-band consumer satellite receiver. (These are the older satellite receivers that usually used a 10ft dish back in the early 1980's, which people used for watching cable and sports for free. If the dish was pointed at a telephone satellite, the television screen is filled with random white dashed lines and no audio.)
 
However, entire phone conversations could be heard through the shortwave receiver simply by manually switching from upper to lower sideband during the call. I saw this demonstrated back in 1983. Note however, it is illegal to listen into private conversations. This is only mentioned here to show how unsecure giving your credit card numbers over the phone can be. Fortunately, C-band receivers and dishes are now basically obsolete and no one uses them except for professional broadcasters.
 
C-band satellite communications are also weather tolerant, unlike the higher frequency Ku-band which is used for DirectTV(r) and DishNetwork(r). Often weather interrupts television programming for 10 minutes or more, while a local weather front or another front up to 200 miles away blocks the signal as it passes between you and the satellite. This is because the size of the raindrops are nearly as small as the Ku band signal itself. Rain-drops function like thousands of pieces of shredded aluminum foil dropped from an airplane which interferes with satellite signals. Sufficiently dense rain clouds will also do the same thing.
 
Satellites using C-band frequencies are much wider, and are almost completely unaffected by weather. If C-band satellites were not weather tolerant, thousands of phone calls would be interrupted everytime it rains somewhere.
 
METALLIC PHONE CALLS
 
For decades, telephone conversations have been digitally encoded on T-carrier copper and fibreoptic for on-the-ground transmission between cities and towns. Remember how we talked about two separate audio channels for each phone call? If there are bit errors, routing errors, equipment failure or other sync problems, audio can become extremely distorted or even be heard as just loud noise for one or both directions of the conversation.
 
A "metallic phone call" can also be the result of normal audio but due to a malfunction in the telephone system, the audio has extremely narrow bandwidth. Not unlike the tin can telephones with string chidren make. Normal audio on every telephone in the United States (and probably also Canada) is restricted to about 3KHz by the FCC, which is the typical bandwidth of the average human voice. (This is the reason music sounds terrible over a telephone. There are FCC regulations (known as Part 68) which regulate the audio in telephone calls. We won't delve into other technical details here.)
 
Sometimes people are erroneously connected into another private phone call due to an equipment malfunction or a signal path routing error, but the other party they are listening to cannot hear them at all if spoken to. In essence, any innocent conversation can be accidentally "tapped." One should never assume a that a private phone call is really private.
 
We can see that numerous techical problems can cause "metallic voices" in phone calls. Even though one may be open minded and convinced that these strange sounds are alien contact or voices from the dead, we must still consider other explanations for these strange phone calls.
 
Logically, it should make any rational person ponder one simple question - if YOU were an alien, would you dial a phone to talk to someone? And why bother to do it, if you know that the person you called will not understand you? If you were an alien and there was something important you wanted a certain person to hear, a close encounter of the third kind would make more sense.
 
Ted Twietmeyer www.data4science.net
 
tedtw@frontiernet.net
 
SIDE NOTE: Vonage and other internet telephone services are actually uni-directional phone calls made to appear as bi-directional, by using an automatic switch in the Vonage system. It's easy to identify someone using one of these - you will quickly get aggravated because until the other party stops talking, they won't hear a single word you're saying. And if you start to say something and they talk, they will never hear you.
 
 
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