Month: February 2016

Since the 1920’s Motorola has been leading the advancement of radio technology in more ways than one. From the battery eliminator created in 1928 to the world’s first handheld public safety LTE device created in 2012, Motorola truly has been an innovator in the radio world.

There was one of Motorola’s products that stood out and started paving the way for the Motorola brand name. That was their two-way radio systems. In 1978 Motorola introduced the RDX1000. This device was a portable data terminal. With a built-in keyboard and advanced transmitters, The RDX1000 made it possible for a person to share information, like inventory control, wirelessly with a central computer system. It is because of advancements and products like the RDX1000 that Motorola was awarded the National Medal of Technology twice.

Yet, even with being the one of the leading technological companies they still had their issues. For example, the connectors used for their devices, usually, were confusing and weren’t universal like most of our tech is today. Yes, with being in the lead of the industry with innovative products they needed new forms of connectors and pieces that couldn’t exactly be matched by other companies. To be more specific, the connectors to the Motorola earpieces came with their own specific confusions.

Over the course of the years, Motorola devices have had over 50 different types of earpiece connectors. Motorola earpieces are specific to their devices so the pieces chosen had to be precisely specific to the device it was being matched with. You can imagine, with over 50 different types of connectors, finding the correct corresponding puzzle piece that would fit was imperative. The confusion wasn’t just limited to a small portion of the Motorola accessories. Motorola earpieces were different by model of the same device as well. With the earpieces you can’t exactly go by looks either. Most of the earpieces look very similar with very subtle difference.

Even though some had connectors with very similar differences. Differences ranging from appearance and size of the connector to the type of material used in the pin of the connector itself. This confusion also spans over several different years of manufacturing as well. With connectors from earlier years being a small series of pins in lateral form that would only connect to the proper outlet with the proper series of pins. Or like the single pin connector that would only be in a specific size per model, you wouldn’t exactly be able to take a Kenwood connector and confuse it with a Motorola 2-pin connector because on these connectors the pins are of a different size to the Kenwood. Some specific connectors can be understood considering the advancing of the technology as well as the device it connects to has some significance.

The importance of the device does have some control over the type of connector used as well. Because you don’t want to issue and offer a radio and have to worry about it getting lost or stolen and being used for an inappropriate purpose. But, you would expect a device in the same model family to be able to connect or at least the connectors to be somewhat interchangeable. This isn’t the case with Motorola radios. For example, The DP2400 two way radio takes a Clip on block style of connector. While the DP3400 responder radio has to have a Screw in Block  connector in order for the product to be used properly. Even though the station and responder radio are two different products, they share similarities and commonalities. Also you would expect them to share the same connector.

Unfortunately this is the case with many of the Motorola earpieces.

Basically, the name two-way radio means that the radio in question can both transmit and receive signals. The two-way part of the name refers to the sending and receiving of said messages.

Some radios, such as the AM or FM radio you might listen to in your car, can only receive incoming signals, whilst other radios can only transmit signals. A two-way radio, however, can both intercept incoming messages and relay outgoing messages, because of this; two-way radios are a type of transceiver.

At its most basic, a two-way radio is a device that receives radio waves through the air and transmits a return signal.

How it does this is actually rather ingenious. Let’s say a user receives a message on her radio. The antenna on the top of the radio houses a group of electrons, these electrons will respond to messages received on specific channels (different groups of electrons respond to different channels). The electrons will then translate the radio waves into electrical impulses, which are then fed to a small processor. The processor, in turn, converts the electrical impulses into a signal, which the radio’s speakers can then play aloud.

The process is reversed if our hypothetical user is replying to her message, in this instance, the vibrations that constitute her voice will rattle a small membrane inside the microphone. These vibrations are fed into the processor, which converts them into an electrical signal. The electrical signal is pushed out to the electrons in the antenna and the signal is broadcast to our other user.

So you see, the process is clearly working on a two-way basis, hence the name. Two radios, when set to the same channel, should never have any problem connecting with one another (even if they are manufactured by different brands). The communication is pretty much instant, which is a big reason why radios play such an integral part in many areas of our lives, such as travel, security, commerce, public safety and trade.

It is important to note, however, that a radio set to receive VHF (Very High Frequency) signals will be unable to communicate with a radio set to UHF (Ultra High Frequency) mode. There is virtually nothing at all that can be done about this.

Of course, the other name used for handheld transceivers in walkie-talkie, but we reckon that one’s pretty self-explanatory…

I don’t care who knows it; I still think wireless headphones are cool. Like bowties, or fezzes in that respect. Oh sure, there are drawbacks, sacrifices that must be made, but its still a total novelty to take a conference call whilst standing up and wandering around.

I don’t know about you, but I think better on my feet. That’s why I’m crap at job interviews, because I appear far more nervous than I actually am, due to all the squirming I do. In reality, if I could just stand up and pace around the room at will, well, you’d probably be reading this article as-written by someone with far greater knowledge and experience.

And get this, the Sony Over-Ear headphones have a 100m listening range. That means that it should be entirely possible for you to get up and make yourself a cup of tea whilst still listening to…Whatever it was you were listening to that was so riveting that it made you crave caffeine in the first place. Feasibly, you could even venture outside to yell at the local kids, or pick up the paper.

Also, with these headphones, you’ll get 28 hours out of a AAA battery, now you really can’t say fairer than that, can you? Especially if you charge it up when you’re not using it.

They are big though. Like, really big. Instead of being built for regular, Human-size heads, they appear to have been sculpted with Red Dwarf’s resident mechanoid Kryten in mind (two BBC Sci-Fi references in one article? Bonza!), the sheer size is ridiculous. They are adjustable, of course, but you might still have every cause to wish these headphones were smaller.

Another negative is the sound quality. I don’t want to say that it is bad (of course, there’s a ‘but’ coming…), but there is a low hiss that seems to permeate everything that you hear, as well as a loud cut-off noise if the signal is broken in any way. From a design perspective, this second feature makes a lot of sense, you don’t want to be outside, waffling away to your mate and not notice that the signal has dropped out (as happens so often with mobiles), but still, there simply has to be a better way, doesn’t there? The noise is loud, intrusive and actually rather scary at times.

However, apart from those minor, nagging problems, these headphones are actually quite nice. They sound OK, the wireless function works beautifully and the price is alright as well. Nice one, Sony.

This very simple, very easily executable solution to a problem that is growing. The Frequencies are already allocated to the airline industry and a simple piece of equipment (non expensive) can be installed. You can find the full article here.

The International Telecommunication Union (ITU) has allocated radio spectrum for global flight tracking for passenger aircraft using satellite-based systems.

The move follows developments spurred by the so far unexplained disappearance of Malaysia Airlines Flight 370 in March last year, which prompted the aviation community to look into possibilities of constant monitoring of passenger planes in flight.

The frequency band of 1087.7-1092.3MHz has been allocated, which is already being used for data transmissions between planes and terrestrial stations that are within the line of sight.

Extending the system to cover also communications between planes and satellites and satellites and terrestrial stations will enable creating a complex system capable of tracking passenger planes throughout the flight even over oceans and remote areas.

The ITU agreed on the allocation at its 2015 World Radiocommunication Conference following a call by the International Civil Aviation Organisation (ICAO).

Performance criteria for satellite reception of the signals will be established by ICAO.

“In reaching this agreement at WRC-15, ITU has responded in record time to the expectations of the global community on the major issue concerning global flight tracking,” said ITU Secretary-General Houlin Zhao. “ITU will continue to make every effort to improve flight tracking for civil aviation.”

ITU has been working on standards to facilitate the transmission of flight data in real time since early after the MH370 disaster.

Already in April 2014, less than a month after the aircraft’s disappearance, Malaysian Minister for Communications and Multimedia called upon ITU to address the issue.

“The allocation of frequencies for reception of ADS-B signals from aircraft by space stations will enable real-time tracking of aircraft anywhere in the world,” said François Rancy, Director of the ITU Radiocommunication Bureau. “We will continue to work with ICAO and other international organizations to enhance safety in the skies.”

In October 2014, the ITU Plenipotentiary Conference meeting in Busan, Republic of Korea, instructed WRC-15 to consider global flight tracking in its agenda.