Category Archives: Telecommunications


What Is Audio Surveillance?

Some of these pro writers on the web are at such a high level that i ponder if any of them have ever written a book? so from time to time i like to focus on these admirable items and here’s one i found interesting the other day.

Audio surveillance is the act of listening to third-party conversations and recording them. This technique is frequently used by law enforcement, private detectives and government spy agencies. Most audio surveillance consists of either bugging a room, wearing a wire, tapping a phone or distance listening. Each provides distinct advantages and disadvantages, depending on the situation.

Wiretapping is one of the most common and simple form of audio surveillance. This is preferred because it is highly inconspicuous and allows for two sides of a conversation to be clearly recorded. Small audio devices, commonly called bugs, are attached to the internal circuitry of a telephone to pick up a conversation. A signal is wirelessly transmitted to another device that records the conversation. The drawback of this method is getting access to a subject’s telephone to properly wiretap it.

audio surveillanceA room microphone is another audio surveillance technique that often is utilized. This involves planting a wireless microphone in a room to pick up conversations. Disguised room microphones are available to look like pens, clocks, stuffed animals and a variety of other covert forms. This microphone sends a signal to a receiver, just like a wiretap does, and the signal can be directly recorded. The disadvantage here is access to some rooms and getting only one side of a phone conversation if it takes place in that room.

Concealable transmitters known as body wires are well-known devices that have been featured in many television shows and movies. A small microphone and transmitting device are worn under the clothes of a person in order to send a signal back to a receiver and record a conversation. This allows the person wearing the wire to ask questions and get specific details that simply listening to other people’s conversations could not provide. The disadvantage of this method is getting access to the person needed to be recorded and also concealing the microphone in a way that hides it but allows for clear recording.

Long-distance microphones are another covert means of audio surveillance. A parabolic microphone, often called a shotgun microphone because of its long shape, has a powerful ability to pick up conversations up to 300 feet (91.4 m) away. Its main disadvantage is its high sensitivity. It can pick up other noises and cannot function if obstructions, such as trees and automobiles, are between the microphone and the conversation.

Does the Walkie-talkie tower really appear like two way radio, and what else does it contain?

I am delighted you inquired. 20 Fenchurch Street, kindly called as the ‘Walkie Talkie Tower’ and maybe less affectionately identified as the ‘Walkie Scorchie’ (yeah, that is a reputation that is never catching on), is a commercial skyscraper in inner London. It’s presently under construction and isn’t supposed to be finished until next year. When all is said and done, it’ll have cost some £200 Million to build.


The structure gets its nickname because it’s considered to resemble a walkie-talkie (although, to be truthful, I can’t see it myself). It is too referred to as the pint, a thing that’s far more fitting. Continue reading

Why do secret service guys wear those earpieces with the coiled wires instead of something less conspicuous?

That’s actually a pretty good question. Good quality wireless earpieces are available, affordable and would be far more inconspicuous than the classic ‘wired’ models. So why don’t the secret service make their presence a little more, well, secret?

The main reason is largely psychological in nature (though there will be a technical component later on). You see, if a potential troublemaker looks into a crowd and sees nobody there that he/she identifies with as a threat, then said troublemaker will be far more likely to start making trouble. However, if they notice secret service guys using their trademark earpieces, then they might think twice about it and a lot of unpleasantness can actually be avoided.

To you or I (assuming that you aren’t a troublemaker?), the secret service guys are just that, they usually appear to protect someone or something, so we ought to have no reason to fear them. Ergo, they stand out just enough to deter the would-be troublemakers, but not so much that they frighten the rest of us or distract from whatever proceedings we happen to be, um, proceeding with.

If you’re sitting there saying, “hang on, what happens if they want to sneak up on someone?” then my answer is still the same, expect that I would imagine that the secret service would put two or three agents within visual distance of a suspect and then ‘herd’ the troublemaker towards other agents in the vicinity. I have no evidence (or experience, I’m grateful to say), to back that up, but it seems reasonable to me to do it that way.

Now, onto the technical part: wireless communication, whilst it has improved greatly in the last few years, is still not as reliable as the more old fashioned forms of ‘wired’ communication. Wireless communication can be subject to signal interference, as well as suffering from a more limited bandwidth.

Finally, wireless communications gobble up battery power far more than their wired counterparts, so for tasks that may last for several long hours at a time, long battery life is a must.

When the wireless technology improves, I suspect that the secret service will make the leap, but I also suspect that they’ll keep the coil, for the reasons stated above.

Also, as an added extra – if you’re wondering why they touch their ears when they receive a message (much to my fellow Brit James Bond’s chagrin), well, that’s because pushing the earpiece into your ear drowns out background noise and also makes the message louder. They simply do it for sound clarity when receiving important information.

What sorts of things do agents take with them when they’re on an job outside the office?

You’d believe that the U . s . secret service (being the American secret service and everything) would have access to an earpiece a bit cooler that just the conventional ‘curly cable’ job, wouldn’t you?

If forced, We have to say that I often imagine a little old fella, like Desmond Llewelyn in the Bond movies, (or even a younger example like Ben Whishaw from ‘Skyfall’) producing all the gadgets himself after which explaining them to the agents before they go out and guard the President’s life. Continue reading

Can you fail deciding on the bluetooth headset for your mobile

2013 can be described as year which will see more people than ever using Bluetooth headsets and that we’re fully commited to making sure that those people are using the top available models. A Bluetooth headphone may be a virtual requirement if you wish to conduct business in today’s fast-paced modern world.

First, the basics:

You can use Bluetooth technology for plenty of specific purposes, most notably the wireless transfer of data from 1 device to another. However, because Bluetooth only works over relatively short distances, it’s in fact much better for linking headphones to cell phones. Continue reading

Microphones with gaming headsets are they any use for gaming?

Hello and welcome to a brand new group of solutions to those headphone inquiries. Ever desired to know about something headset, earpiece or headset linked? Now’s your opportunity. Due to a great amount of questions we’re so regularly asked, you’ll find we’ve reached into our mailbox and chosen the 9 most important (and most often submitted) inquiries. Enjoy.

Oh, by the way, if your question is not here, then just mail us an message and check back in a few… you could find it featured in the next series. Thanks. Continue reading

How can I make my earphones last for a extended time?

Hello and welcome to a new group of replies to those earpiece questions. Ever wanted to know about something headset, earphone or receiver linked? Now is your opportunity. Due to a great deal of questions we are so often asked, you’ll find we’ve reached into our mailbox and picked up the nine most relevant (and most frequently submitted) inquiries. Enjoy.

Oh, by the way, in case your inquiry isn’t here, then simply dispatch us an message and check back in a few… you may see it featured within the next series. Thanks.

Part 1: How can I make my earphones last more time?

Headphones are an important part of modern music. During the dire old days, headphones were attached to stationary turntables and the only portable music emanated chiefly from ‘Ghetto Blasters’, which a style of portable tape player, such as one that incurs the wrath of Mr. Spock in Star Trek IV, the one about the whales.

This ultimately meant that if you wanted to play some music whilst out and about, (and lets face it, who does not?) everybody else within the immediate vicinity had to listen to it also.

These days, as any peek out of our nearest window must inform you, pretty much everybody is listening to music unnoticeably and comfortably with the use of iPods, MP3 players and what-have-you. Yet, your headphones, the supply of your audio pleasure (see what I did there? nyuk nyuk) are much like your clothes or your vehicle in that they go everywhere with you and occasionally want some TLC to keep them running for longer.

Damage is the main killer of headsets (unless, like me, you sit on them when they’re inside your pocket whilst at work…D’oh!) and as such, you need to be aware of the following risks.

1) Winding: wrapping your headsets all-around your MP3 player might seem like a great way to stow them, but take care of wrapping it up too tightly. If yo happen to wrap the cables too tightly or firmly, you are prone to tear the silicon wiring inside, this will cause lasting damage to the wires, giving you damage to quality or total loss of sound altogether.
2) Fluids: Your earphones could seem water resistant, but in reality, they are not. If the speakers soak up fluid, this will warp them enduringly, distorting all potential music. Rain you are able to deal with, but be wary of sweat when jogging or exercising and, obviously, watch out for spilled drinks.
3) Heat: For the same reason that fluids are terrible (but additionally with another threat to the wiring) extreme heat is a very poor thing for earphones. Stay away from leaving them in the path of direct sunlight for extended time, or seeking to microwave them whilst drunk.

Caring for the headphones is a comparatively simple task, but if your sound becomes distorted, its sometimes a good idea to clean out the speakers with a dry cotton bud, just dabbing away on the grease or make up which could develop in there. If the problem persists, run the cotton bud under some tepid water and take a look at washing out your ears. That now and then works.

Can a wired earphone be better than a wireless one?

Hi and welcome to the innovative new group of solutions to those headphone inquiries. Ever wanted to learn about something headphone, earpiece or receiver linked? Now is your chance. Due to the great amount of inquiries we are so often asked, we have reached into our mailbox and chosen the nine most

applicable (and most frequently submitted) inquiries. Enjoy.

Oh, by the way, if your question is not below, then just send us an communication and check back in a few… you could see it featured in the next series. Thanks.

Part 2: The Disparity Between Wired & Wireless Earphones

Consider the number of devices and gizmos you will have in operation in your home, right now.

As I write this, I am clearly working on my computer (a trusty aged eMac that I picked up in 2005), the washer is bringing its 2nd cycle to a close and my girlfriend is concurrently doing the ironing, watching a DVD and looking at her Facebook with obsessive regularity just in case “anything interesting happens”.

We are both tied to the Internet (despite being a complete room away) and she is watching her film via a DVD player that’s linked to the surround sound system which may be in return connected to the TV. My intention? I’m sure we have enough cables in the modern planet to last us 8 billion lifetimes. That’s far too many. Wireless technology is the way ahead, you just see if it isn’t.

These have to be.

At this speed, if we didn’t have wireless technology, we’d all have to become cyborgs with the next ten years, just to create space for all of the cables, that’s how rowdy and uncontrolled cables can be.

As you haven’t any uncertainty surmised by now, wireless headphones are merely that, earphones without cables, earphones sans cables, headphones sin wires. That, to be perfectly frank, could be the main difference, but technologically, there are two other discrepancies.

Wireless headsets frequently work via a transmitter that links to your player. They’re attuned with almost the whole thing, nevertheless it’s worth checking out that a device will aid the headphones before you purchase them. Just in case.

Wireless headsets are predominantly utilised in three areas, they are:

1) Sporting: The benefits of not getting cables tangling about you whilst running, exercising or weight lifting are obvious. If you’re serious about songs and equally serious about your sporting activities, you actually need wireless earphones.
2) Gaming: Being able to speak with additional gamers whilst on line is more and more in demand lately, again, you don’t want to inadvertently rip out the cable in the middle of the extremely verbose and openly scatological, multi lingual stream of abuse that took you hours to source on Google Translate, do you? No, I did not think so. Today, most players favor to go wireless.
3) Phone Calls: Mobile phone calls are another section where it really pays to go wireless. Bluetooth headphones are a big hit with commuters, business people and everyday consumers alike.

Although mechanically diverse, wireless headphones are well-suited with most stereos, pcs and mp3 music players. The key divergence, as we said, is the scarcity of a cable. You will not be making much of an enhancement by way of noise quality, but you will be producing your 1st down payment to that wire free outlook.

How does noise cancellation work?

There are two ways that noise cancelling headsets work, ergo, noise cancellation comes in two distinct forms. The first, known as ‘passive’ noise reduction is actually pretty obvious. For a good demonstration, hold your hand flat (as if you were attempting to ‘karate chop’ something) and then place it over your nearest ear (but don’t hit yourself, of course). Notice the muffling? That is passive noise reduction. By this measure, anything that covers your ears or blocks sound from entering them is a form of passive noise reduction. By this token, then, all headphones and headsets are passive noise reducers. Continue reading

Two Way Radio Earpieces (…And Why Scottie is Unlikely to Beam you up, Ever)


For those of you mad enough to actually read my numerous articles, think pieces and terrible jokes (usually held together by only the thinnest of links to the product in question), you’ll be aware that I spend most of my time wishing that life was more like ‘Star Trek’.


Here, then, with the advent of these new two-way radio earpieces, is a product that can help us get a little closer to that wish. We may still be light years away from warp drive and many decades away from even a rudimentary holodeck, but the classic TOS communicators and TNG ‘com badges’ aren’t all that far fetched. Continue reading