How does an aeroplane’s ‘black box’ work?

After doing a little research, I can now tell you (basically) everything you ever wanted to know about black boxes…

In the average commercial aircraft, you’ll find the presence of multiple (usually four) microphones in the cockpit at any given time. They are located in the pilot and co-pilot’s headsets, as well as in the cockpit itself. Not only do these microphones record conversations between the pilots and cabin crew, they also record any ambient noise (such as switches being thrown or sounds generated by technical issues). The microphones all connect to the cockpit voice recorder (CVR), a master unit that stores the last 30 minutes of sound. The tape operates on a loop, essentially erasing itself every half hour.

How does an aeroplane’s ‘black box’ work?

After doing a little research, I can now tell you (basically) everything you ever wanted to know about black boxes…

In the average commercial aircraft, you’ll find the presence of multiple (usually four) microphones in the cockpit at any given time. They are located in the pilot and co-pilot’s headsets, as well as in the cockpit itself. Not only do these microphones record conversations between the pilots and cabin crew, they also record any ambient noise (such as switches being thrown or sounds generated by technical issues). The microphones all connect to the cockpit voice recorder (CVR), a master unit that stores the last 30 minutes of sound. The tape operates on a loop, essentially erasing itself every half hour.

The Long Road Home: Radios used on Transport Systems and Fleets

According to the UK Government, there were an estimated 5.2 billion bus passenger journeys undertaken on our roads in 2011/2012. Public and private transportation is not only big business; it is also of massive importance to the smooth running of the country.

Whilst only 14% of the UK’s 25 million commuters travel to work by bus or train, this still accounts for over 1.7 million people. In order for a country this reliant on public transport to survive and thrive, it is absolutely imperative that transport workers can communicate with each other in a quick, efficient manner, fuelling an industry that, by necessity, spans the length and breadth of the nation.

JW Marriott San Antonio Hill Country Resort and Spa Saves Over $100K in Annual Cost and Increases Staff Efficiency

With its newest resort opening its doors in early 2010, the JW Marriott San Antonio Hill Country Resort and Spa wanted to ensure that its new flagship property maintained and even exceeded its already high standards for guest satisfaction. Choosing MOTOTRBO over cellular push-to-talk technology, the hotel saved $14,000 per month in service fees, significantly improved response time to guest requests, and expects to achieve full return on investment within

How to waterproof headphones?

Asked by Betty from Hammersmith

I take it you’re a newer reader and you therefore aren’t aware of my dislike for recommending specific sets of headphones. In a usual case, (like when one reader asked me to recommend sweat-proof headphones) I have to answer with “it depends on a multitude of factors, such as how often you use them, how important sound quality is to you or even (in that one case) how much you tend to sweat. However, I’m not going to let you down, Betty, because waterproof headphones are actually a bit different…

How to waterproof headphones?

Asked by Betty from Hammersmith

I take it you’re a newer reader and you therefore aren’t aware of my dislike for recommending specific sets of headphones. In a usual case, (like when one reader asked me to recommend sweat-proof headphones) I have to answer with “it depends on a multitude of factors, such as how often you use them, how important sound quality is to you or even (in that one case) how much you tend to sweat. However, I’m not going to let you down, Betty, because waterproof headphones are actually a bit different…

Get a Motorola DP2400 earpiece for the best price

Well, dear readers, here it really is, the final of our five-part series on 2 way radio earpieces.

We’ve thrown totally random pop-culture suggestions at you (everything from ‘Wacky Races’ to 007 himself) and we’ve (hopefully) had a number of laughs amongst all the dry details and statistics. If you’ve read all of these items thus far, then thanks, we value your time.

OK, so the last item on our list is the Dp2400 earpiece, which could the costliest earpiece we have viewed thus far, albeit by only £2. The Motorola dp2400 earpiece, then, (for those amongst you who have not been keeping count) could be purchased from Earpieceonline for £29.75.

What is Ham Radio & How Does it Work?

Ham radio (so called because its operators were originally derided as being ‘hammy’ in the 19th century, when the technology first emerged) is a term that applies to any form of amateur radio broadcasting.

 

There are designated radio frequency spectra available solely for public use. Uses range from recreation to communication and the non-commercial exchange of ideas. ‘Hams’ take advantage of these frequencies in order to transmit any number of things

Get a Motorola DP2400 earpiece for the best price

Well, dear readers, here it really is, the final of our five-part series on 2 way radio earpieces.

We’ve thrown totally random pop-culture suggestions at you (everything from ‘Wacky Races’ to 007 himself) and we’ve (hopefully) had a number of laughs amongst all the dry details and statistics. If you’ve read all of these items thus far, then thanks, we value your time.

OK, so the last item on our list is the Dp2400 earpiece, which could the costliest earpiece we have viewed thus far, albeit by only £2. The Motorola dp2400 earpiece, then, (for those amongst you who have not been keeping count) could be purchased from Earpieceonline for £29.75.

What is Ham Radio & How Does it Work?

Ham radio (so called because its operators were originally derided as being ‘hammy’ in the 19th century, when the technology first emerged) is a term that applies to any form of amateur radio broadcasting.

 

There are designated radio frequency spectra available solely for public use. Uses range from recreation to communication and the non-commercial exchange of ideas. ‘Hams’ take advantage of these frequencies in order to transmit any number of things