MH370: Motorola cargo comprised walkie-talkies, besides batteries and chargers

what would you say if this website About keyword was the best one we found this week, would you believe us?

A two-tonne consignment aboard the ill-fated  MH370 flight is believed to comprise walkie-talkies, lithium ion batteries and their chargers.

The cargo manifest released in the preliminary report of the incident shows that the plane was carrying 200kg of the batteries while the balance is said to be “radio accessories and chargers”.

The revelation by Malaysia Airlines confirms a report by fz.com on March 25 that revealed that the shipper of the lithium ion batteries, walkie-talkies and chargers was Motorola.

Quoting a source at that time, fz.com reported that the goods were shipped from the factory’s facility in Penang.

The goods were sent by lorries to the KL International Airport, and based on the master air waybill, the items were sent from Penang on March 6.

Of the 2.4 tonnes that was shipped from the plant in Penang, only about 200kg comprised the batteries.

Though the cargo manifest and master air waybill indicated lithium ion batteries, it did not reveal that walkie-talkies made up the rest of the consignment.

MAS later said in a statement that they were “radio accessories and chargers”.

The air waybill prepared by NNR Global Logistics Sdn Bhd on behalf of its client, Motorola, showed that two loads were packed, one being 1,990kg for 133 pieces and another being 463kg for 67 pieces.

The batteries and accompanying goods were later shipped by NNR Global Logistics, while the balance divided into “13 packages”, were forwarded by Kerry Logistics (Malaysia) Sdn Bhd.

The cargo manifest showed the plane carried 9,947kg in three large shipments.

While mangosteens from Muar, Johor weighed the heaviest at 4,566kg and the 2,453kg worth of lithium ion batteries and accompanying goods (written up only as “consolidated”) are more or less accounted for, the other 2,250kg of “consolidated” items have sparked interest.

A source familiar with aviation forwarding industry practices said the mystery surrounding the cargo manifest and the exact loads that went onto the ill-fated MH370 can only be resolved if MAS revealed the house air waybills.

The source added that without the house air waybill and the packing list, the cargo manifest and the master air waybill were redundant because only those two documents would properly state the goods and the shipper.

“It is understandable that MAS cannot reveal the other two documents simply because they may not have it.

 “As for the house air waybill and packing list, the Customs Department, the freight forwarder and the shipper should come forward and reveal them,” he said.

Days after the Beijing-bound flight went missing along with 239 passengers and the crew on March 8, Malaysia Airlines chief executive officer Ahmad Jauhari Yahya said the plane was carrying 200kg of “small” lithium ion batteries.

He said the load was not considered hazardous as it was packaged in accordance to safety regulations.

In response, the aviation source said though the shipment contained batteries and declared as dangerous goods, they are within specified permissible levels.

“The dangerous threshold for lithium ion batteries is not measured by its weight but its watt per hour measurement. For instance, a handphone probably would measure 100 grams watt per hour which is not lethal.

“The watt per hour measurement indicates the battery activity by the hour,” he had said while cautioning that forwarding companies and shippers often failed to declare “hidden dangerous goods” in the shipment.

These include flammable liquids, lubricants, corrosive and oxidising materials that could and have resulted in fires onboard flights, he said.

Read more: http://www.fz.com/content/mh370-motorola-cargo-comprised-walkie-talkies-besides-batteries-and-chargers#ixzz31gub3d3V

How To Wear a Security Earpiece

Radio earpieces look really cool. They are generally used for surveillance but some enthusiasts also wear them just for fun. Secret agents and spies in the movies have made these accessories really cool to wear.

Putting on a radio earpiece is not a tough job. To put on an earpiece, first of all you need to take that earpiece and microphone clip in your hand. The microphone is to be put where you are most comfortable with it. It can be put on your hands, specifically on your wrist. You must have seen Spies or Secret Service agents in movies lifting their wrists talk. This is where they are speaking into the mouthpiece on their wrists.

If you’re not comfortable with the mouthpiece on the wrist, you can also put it on the tie or on the shirt, on your chest. Once you have clipped on the mouthpiece, it is time to put on the radio. Take the wire dangling from the mouthpiece and put it inside your shirt. Take this wire out from the top of the shirt. This way the dangling wires will be completely hidden. Take the earpiece and put it on your ears. Make sure, that it fits tightly and would not fall off when you start to walk. You can put it on either ear. If you are wearing the mouthpiece on the wrist, you will find it comfortable to put the earpiece on the same side ear.

Once you are comfortable with the mouthpiece and the earpiece, it is the turn of the end which goes into the radio. Take this dangling wire connecting that end with earpiece and mouthpiece and put it inside your shirt. Take out the wire from the bottom of the shirt. Put it in the radio and clip the radio in its place on your pants. Once you have that these wires inside your shirt completely, you need to tuck in your shirt inside your pants so that none of the wires are visible.

Once everything is fixed, switch on the said radio and test the settings. If everything is working as it should be then you have put on the radio earpiece correctly.

Wait, you are not done yet!

Once you have tucked in your shirt inside your pants and put on your jacket, you need to test the comfort level of this piece by walking around a few paces up and down. If you’re comfortable with the earpiece and the mouthpiece and are able to talk on radio, then you are set for the job. If any of the wires are the earpiece or the mouthpiece is making you uncomfortable, you need to reset your wires.

The real advantage of a concealed earpiece is that others wouldn’t notice when you are talking on a concealed earpiece. If you’re uncomfortable wearing these or with the wires, you lose the advantage of a hidden radio earpiece. Therefore it is very important to check the complete settings by walking around.

Congratulations, you have successfully put on a radio earpiece. Now, enjoy talking like a secret service agent

What Is Audio Surveillance?

My website brings every one of the boys to the yard… see what we mean here

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.

What Headset Fits My Bike?

The headset of a bicycle is, in simplest terms, the part of the bike that allows the steering column and front wheel to rotate and turn. It is, therefore, fairly important to the general running of a bike (as we’re sure you’ll agree!)

A bicycle headset generally consists of two cups that are pressed to the top and bottom of the headtube, there are bearings inside the cups that provide low friction contact between the cup and the steerer. This setup allows the rider to be able to steer and operate the bike with maximum efficiency.

Today’s bikes use lots of different headset styles, so we’ll take you through a few of the most common ones (because we’re nice like that).

  1. Threaded Headsets – These headsets are the most simple and ‘classic’ of all headsets. They were once nearly ubiquitous, but times have moved on since then. According to ParkTool.com, “The “threaded” in the name refers to the external threading at the top of the fork steering column. Bearing cups are pressed into the bike head tube. The bearings, which may be loose ball bearings, retainer ball bearings, or cartridge bearings, sit above and below the pressed races. The top most bearing-race has internal threading, and is held in place by a threaded locknut. The stem has no effect on the headset adjustment”.
  2. Threadless Headsets – Threadless headsets are actually quite similar to their threaded cousins, with one major difference (and you’ll probably see this one coming), there is no threading. According to ParkTool, “The top race uses an internal centering sleeve on the column to maintain alignment to the bearing cup. Pressure is applied to the top race from the stem. Threadless Headsets must use a compatible stem that matches the steering column diameter. The stem binds to the outside of the column, and holds the top race in adjustment. The threadless standards are 1-inch and 1-1/8 inch diameter steering column.”
  3. Low Profile Headsets – Alternately known as ‘Integrated Headsets’, ‘Internal Headsets’ and ‘Zero Stack Headsets’ (amongst others), these headsets use pressure frame cups to secure the bearings. “The cups have a flange, or lip, and sit adjacent to the outer edge of the top and bottom of the headtube. The headtube is a relatively large outside diameter, approximately 50mm, and cups allow the bearings to sit flush or even inside the headtube. The headset bearings sit “internally” to the top and bottom of the headtube. Some models use a cup that holds a cartridge bearing. The cartridge bearing is a slip fit into the cups. The cups act as a bearing holder and do not take bearing movement or wear directly. Other types have the cartridge bearing and cup/holder as a unit. These are simply replaced as a unit when it is worn out. Still another version of this type uses a cup and cone system with caged ball bearings, similar to the conventional threadless headsets”.

Of course, its up to you to decide which of these styles best suites you and your bike.

SOURCES

http://www.parktool.com/blog/repair-help/headset-standards

http://en.wikipedia.org/wiki/Headset_(bicycle_part

A look into the surprisingly popular world of ‘spy’ gadgetry

British comedian Jack Dee probably said it best, “Men like to use drills because secretly, we think they’re guns”. Tools just bring out our inner 007.

He’s right. Men like gadgets for the same reason. We can’t deny it, there’s just something unassailably cool about a tool that you can use, but that no one else knows about.

Whether you’re prancing around your house pointing a Black & Decker at imaginary henchmen, or fondly imagining that your fountain pen doubles as some sort of deadly offensive weapon, its OK to admit that you like the idea of gadgets.

spy earpiece

If you’re reading this and nodding, then you are almost certainly a man (or else, a bit of a Tomboy, which is fine too). In which case, you probably found this article whilst searching for a ‘spy earpiece’ online. Ergo, the sort of person who buys a this is, well, someone just like you.

If, however, you clicked this page because you want to know what sort of person uses such a device (or indeed, what, if any, its practical applications are), then you’ve come to the right place, ma’am.

Its not all James Bond wannabes, you know.

Business professionals cunningly utilize spy earpieces to receive information in real time as they negotiate huge deals and contracts. They also employ such gadgets when giving lengthy and complex presentations to superiors or potential customers. This goes double (or even triple) for public speakers.

Security personnel will also use spy earpieces, as surprising as that may be to read. Often, the security professional is used as a deterrent; large, imposing men and women are geared up with walkie-talkies and sharp suits or black uniforms in order to encourage would-be troublemakers to think twice. However, it is also common for security guards to operate in plain clothes, keeping an eye on potential situations discreetly and quietly. For this, they use a spy earpiece. For the same reasons, even undercover police have been known to employ spy earpieces.

Then, of course there are students (yes, we had to get to it eventually). These are a great way to help in your exams AND feel like James Bond at the same time. Of course, we’d never condone the use of our products in such a way, but nevertheless, it does happen. Amazingly, the time spent preparing a reliable body of information and then having an accomplice drip feed the correct answers to you via the earpiece would probably be better spent actually learning the material in the first place. However, students can also use spy earpieces in presentations in much the same way that businesspeople do.

Recently, we’ve come across articles online which suggest that even the unemployed are getting in on the act, using spy earpieces in job interviews in order to come across as qualified and knowledgeable.

So, the earpiece appeals to more than just the gadget-crazed would-be 007. Spy earpieces are used by a broad cross-section of the community, not just by men with a little too much time on their hands!

Riedel to Provide Radio Communications Network and Equipment for Glasgow 2014 Commonwealth Games

This was originally posted at softwaredev.itbusinessnet.com and we thought we’d share it here, Riedel are one of the worlds biggest radio companies and have run the communications for the london olympics, euros 2012 and many other big events, so thsi story comes as no surprise.

Riedel Communications, provider of pioneering real-time video, audio, data, and communications networks, will supply all radio communications equipment and services for the Glasgow 2014 Commonwealth Games, running from July 23 to Aug. 3 in Glasgow, Scotland. 

“The ability to communicate effectively at Games venues and throughout Glasgow and other parts of Scotland is an essential element to delivering a successful Glasgow 2014 Commonwealth Games,” said Brian Nourse, chief information officer, Glasgow 2014 Commonwealth Games. “We have benefited from Riedel’s extensive experience of being involved in many previous major sporting events to ensure a robust communications solution is delivered for our event,” 

 Riedel Communications has designed a radio communications solution for use across Glasgow and at the 14 venues hosting 17 different sporting competitions. The company is providing all radio handsets and radio communication accessories — including more than 6,000 radios — used in the lead-up to and during the Games, along with a terrestrial trunked radio (TETRA) digital network and a Motorola MOTOTRBO digital radio repeater system. Both the TETRA and MOTOTRBO systems are dedicated, fully monitored, and serviced solutions. 
TETRA combines the advantages of analog trunked radio with those of digital mobile radio to provide optimal frequency usage, high transmission quality for speech and data, maximum security against eavesdropping, as well as flexible networking and connection management. Beyond that, the digital trunked radio system supports full duplex communication, GPS-positioning, and connection to the public telephone network. The system offers the option of operating different virtual channels, and it can leverage IP connectivity to support wide-area operation.
With this communications infrastructure, Riedel will ensure outdoor street-level coverage at all official venues, throughout the city of Glasgow, and along the official cycling road race and marathon routes, as well as indoor coverage at Glasgow 2014 competition venues. Riedel is also supplying the radio communications solution for the Scottish leg of the Queen’s Baton Relay, ensuring radio communications run smoothly as the baton makes its way through Scotland to Glasgow for the Games.
“We are delighted to be the Official Radio Communications Partner of the Glasgow 2014 Commonwealth Games,” said Christian Bockskopf, head of marketing for Riedel Communications. “We’ve worked closely with the organizers to develop a radio communications solution that satisfies both the technical and operational requirements of all the key players during this world-class event.”

 

What Type Of Two Way Radio Should A Shopping Centre Use?

The truth is that shopping centres (or ‘malls’ if we’re being American about it), can seriously improve an area’s local economy. It is basic economics really, if the supply is less than the demand, then there is profit to be made. I expect a percentage, Deepak!

OK, I’ve thought a bit about this one and, I reckon your best bet would be an affordable, yet high performance unit like a Motorola DP3400 or similar. I suggested the DP3400 because it a) it won’t bankrupt the (hypothetical) project, b) it is very versatile and c) it is exceptionally easy to use (user training takes, on average, about 20 minutes).

A DP3400 offers use of 32 channels, functions as both analogue and digital and is available in UHF or VHF versions. In short, this radio is perfect for security, health and safety or even customer service.

I’ve recently found the ‘Case Studies’ sections on the Motorola website (you can probably tell by my other pieces this month), but the DP3400 has a case that’s exactly like yours. For what its worth, here’s what they said about it.

“Digital two-way radio was chosen to provide a secure, discreet communicationsystem with no risk of transmissions being compromised by eavesdroppers. The Centre’s local Motorola Authorised Dealer demonstrated how  MOTOTRBO digital radios could provide greater coverage and improved audio clarity than analogue and enable users to make both one-to-one and group calls. The increased battery power would extend battery life by up to 40%, enabling the radios to be used throughout the entire 11-hour trading day without recharging”.

That sounds pretty good to me. In any instance, you keep dreaming and don’t let anyone discourage you. Find out what it takes to be an…um, ‘shopping centre design person’ and just go for it! 

Bring beautiful music (and sound effects) to your ears with this headset buying guide

This Headset buying guide from PC world is one of the most detailed we could find for this christmas, if you’re looking for a headset for a family member then reading this will put you in the right direction.

 

Modern games deliver awesome graphics, but the visuals are only half of the gaming experience. Studies have shown that audio quality can shape your perception of the entire gaming experience. When a high-quality soundtrack reaches your ears, your brain will also perceive the game’s graphics to be of higher quality.

Audio quality can affect your gaming experience in other ways, too. Without good audio, you won’t hear enemies approaching or hiding behind cover. You might not hear your teammates as they try to coordinate with you or give you instructions, and they won’t hear you clearly, either. And you’ll lose that sense of immersion in the game world that turns a good gaming experience a great one. A high-quality headset is just as important as a good graphics card, keyboard, and monitor.

Audiophiles want the best quality they can get, and gamers need the best tech available. Top-of-the-line headsets deliver both. Whichever camp you’re in, the first choice you need to make is between a stereo headset and a surround-sound headset. Stereo—independent sound from the left and right channels—is the more common option, but it can’t match the realism of surround sound.

Headsets that use surround-sound technology simulate realistic room acoustics through digital signal processing. They trick your brain into thinking that sound is coming from specific locations in the environment. It’s a great sensation and can be really helpful in games—when it works. If the designer handles the encoding poorly, however, it can create myriad artifacts and distortions that make audio enthusiasts cringe.

rage 7b
Inline controls make it easier to adjust a headset’s volume and mute functions.

Once you’ve made that decision, focus on comfort. A headset should fit your noggin the way your favorite sweatshirt fits your torso. A too-heavy headset will pull down on the top of your head and strain your neck, turning you into a broken bobble-head. The headband should be well padded, and the ear cups should cover your ears completely to keep sound in and background noise out.

Natural materials such as cloth mesh and leather (especially lambskin) are the most comfortable to wear for long gaming runs. Vinyl and other types of faux leather tend to peel and crack with age, and they can irritate sensitive skin after several hours.

analog or usb
Headsets can connect via USB or analog. The Logitech G430 lets you choose.

You can connect a headset to your PC in one of two ways: with a USB connector or with jacks (typically, 1/8-inch jacks). USB keeps the audio signal in the digital domain until it reaches a digital-to-analog converter, which can be inline with the cable or inside the headset. These designs prevent electrical noise from the PC’s motherboard and other components from contaminating the audio signal. If you’ve invested in a high-end sound card, or a motherboard designed to isolate its onboard audio components from electrical interference, a good analog headset will deliver excellent audio quality.

Don’t forget the element that turns a pair of headphones into a headset: the microphone. Communication is huge in multiplayer games, so a good mic is invaluable. A flexible stalk will enable you to position it comfortably near your mouth when you need it, and easily shunt it aside when you don’t.

bvlack a40 34a0s 0023 astro a40 tag
Some headsets, like the Astro A40s, have such additional features as equalizers, a detachable microphone, and inline controls.

Extra features are the icing on a headset cake. Inline controls provide a convenient way to adjust the volume and mute the mic when you don’t want to broadcast your conversation. A removable microphone allows you to comfortably use the headphones with a digital media player while on the go. And an equalizer or client software can let you establish sound profiles for whatever you’re listening to—games, movies, or music.

Escape the never-ending ambient sounds of holiday music and squabbling families by throwing on your new headset and blasting away in-game baddies while enjoying sweet high-definition audio.

Source – http://www.pcworld.com/article/2069881/bring-beautiful-music-and-sound-effects-to-your-ears-with-this-headset-buying-guide.html

What frequencies do walkie talkies use?

Hi Pat (Patrick? Patricia? The Puppet Formerly Known as ‘Postman’? – Just kidding!),

Happy New Year!

Now, to answer your question, two-way radios use a range of what are called ‘frequency bands’ – these are areas of the electromagnetic spectrum (a fancy name for the total range of electromagnetic radiation) that are used for audio communication.

Most radios will operate on either VHF (Very High Frequency – any frequency range between 30MHz and 300MHz) or UHF (Ultra High Frequency – any radio frequency range between 300MHz and 3GHz) modes, but the two types of radio are incompatible with each other, so a careful choice is required on the part of the user.

Generally speaking, UHF radios are better suited to urban or indoor environments, whilst VHF has a slight advantage if you’re using your radio outside. For more on the VHF vs. UHF debate, check out Wendy from Stoke-On-Trent’s question, posted in December.

Anyway, the lowest frequency is the VHF Lowband frequency (25Mhz – 50MHz), whilst the VHF Highband frequency is anything between 126MHz – 174MHz. The general UHF Band is anything between 403MHz and 512MHz.

Of course, the right frequency for you depends greatly on your needs. Is your radio system used professionally or as a hobby? Is security an issue or not really? That sort of thing.

Remember also that it is illegal to use certain frequencies, as they are used by the Emergency Services. Two-way radio use is actually quite tightly monitored/restricted, largely for public safety purposes.

According to a Motorola online course “Because frequency spectrum is an infinite resource, and the number of users in many areas is high, many radio channels are becoming crowded. Channel loading is a term used to describe the number of users assigned to the same frequency. Channel loading is so heavy in some areas that additional users are no longer allowed on particular channels, or frequencies. The use of channels is authorized and licensed by government agencies in most countries”.

The course goes on to say that,

“In all cases, a license to operate radio equipment is required and must be applied for with the appropriate governing body. The license is granted to operate on a particular frequency, or set of frequencies, with specific eligibility rules that must be met”.

Anyway, is pays to do a little research before heading out into the field with your walkie talkie. 

Get a GP300 earpiece for the best cost

We consume a load of time writing about Motorola 2 way radios, so we’ve chosen to do a series that concentrates on the earpieces that link up to them.

Not only do a number of respectable businesses manufacture top-of-the-range 2 way radios that are both inexpensive and trustworthy, there are also a large array of 2 way radio earpieces that vary from low priced and cheerful (but nonetheless effective) to the last word in techno badassery (Editor’s Note: not actually a word). Continue reading

How does a virtual reality headset work?

Virtual reality, which I’m going to define as ‘the creation of a computerized 3D environment that can be interacted with and manipulated in much the same was as the real world can’, is a pretty multi-faceted concept. There are quite a few ways to allow interaction with a virtual environment (VE), but the headset is perhaps the best known.

So, the key thing that a VR headset needs to be able to do is track the movements of the user’s head (and, where possible, their eyes) in order to allow for better interaction with the VE. After all, if I tilt my head from where I’m sitting and look at the ‘Macho Man’ Randy Savage action figure that stands on my desk, the positioning of my eye line will change my perspective of the figure. So VR, in order to be convincing, needs to work on the same principle. Continue reading

Why Can’t I Use a Radio or a Phone on an Aeroplane?

The real reason is that the signals generated by your radio receiver (yes, it generates signals as well as receives them) can interfere with the aeroplane’s navigation equipment.

 

In an article for ‘The Straight Dope’, published in 1987, Cecil Adams (who ran a similar, but far superior, column to this one) explained it far better than I could. He said,

 

“Most modern receivers use something called a “local oscillator,” which is sort of an internal transmitter. The oscillator generates signal A, which is mixed with the somewhat raw incoming signal B to produce nice, easy-to-work-with signal C. There’s usually some sort of shielding around the oscillator, but it’s not always effective and sometimes errant signals leak out to make life difficult for other radio equipment nearby. If the other equipment happens to be an aircraft navigation device, somebody could wind up digging furrows with a $25 million plow. So do your bit for air safety and bring a tape player instead.” Continue reading

How does a virtual reality headset work?

Virtual reality, which I’m going to define as ‘the creation of a computerized 3D environment that can be interacted with and manipulated in much the same was as the real world can’, is a pretty multi-faceted concept. There are quite a few ways to allow interaction with a virtual environment (VE), but the headset is perhaps the best known.

So, the key thing that a VR headset needs to be able to do is track the movements of the user’s head (and, where possible, their eyes) in order to allow for better interaction with the VE. After all, if I tilt my head from where I’m sitting and look at the ‘Macho Man’ Randy Savage action figure that stands on my desk, the positioning of my eye line will change my perspective of the figure. So VR, in order to be convincing, needs to work on the same principle. Continue reading

Why Can’t I Use a Radio or a Phone on an Aeroplane?

The real reason is that the signals generated by your radio receiver (yes, it generates signals as well as receives them) can interfere with the aeroplane’s navigation equipment.

 

In an article for ‘The Straight Dope’, published in 1987, Cecil Adams (who ran a similar, but far superior, column to this one) explained it far better than I could. He said,

 

“Most modern receivers use something called a “local oscillator,” which is sort of an internal transmitter. The oscillator generates signal A, which is mixed with the somewhat raw incoming signal B to produce nice, easy-to-work-with signal C. There’s usually some sort of shielding around the oscillator, but it’s not always effective and sometimes errant signals leak out to make life difficult for other radio equipment nearby. If the other equipment happens to be an aircraft navigation device, somebody could wind up digging furrows with a $25 million plow. So do your bit for air safety and bring a tape player instead.” Continue reading