Monthly Archives: July 2015

Review of the Motorola DP2400

The Motorola DP2400 is designed to make it easy for individuals to

stay connected to one another. It is ideal for construction sites and

manufacturing lines where employees need to be in constant

communication. It is one of the best digital radio solutions. This

portable radio provides best-in-class audio. It comes with a variety

of intelligent voice and audio announcement components that help to simplify communication in difficult work settings.

There are 16 channels on this portable radio. It is powerful and

versatile and integrates two-way radio operation and advanced digital

technology. This device can change the way people communicate at your

workplace and help you to improve safety and productivity. It is a

non-display model that comes with 3 programmable buttons. It is

available in both VHF and UHF frequencies.

Benefits

There are several benefits that you can enjoy when you purchase this

portable radio for your workplace.

Audio Clarity

One of the main benefits of the Motorola DP2400 is its outstanding

audio clarity. This radio offers quality digital audio all over your

coverage region. It comes with unique features that are included to

assist your personnel to speak and hear clearly in spite of their

location.

Automatic Volume Adjustment

The intelligent audio feature adjusts the radio’s volume

automatically. This helps to make up for any background noises that

can make it difficult for your personnel to hear and speak. With this

portable radio, you do not have to adjust the volume. You will be able

to hear a call even when there are loud noises around you. If you are

in a quiet environment, the radio volume will reduce automatically,

ensuring you do not disrupt the people around.

Analogue and Digital Modes

This radio allows you to switch between analogue and digital to suit

your specific situation. The Motorola DP2400 has a mixed mode repeater

that is designed to update automatic changes between digital and

analogue calls. With this portable radio, you only need a single

repeater to use these two modes.

Capacity Plus

This portable radio comes with an optional single-site digital

trunking that enhances the capacity of the MOTOTRBO system. You can

take advantage of this system for high volume data and voice

communication. It can be accommodate more than a thousand people on

one site. You will not need additional frequencies to accommodate

several users.

IP Site Connect

This portable radio relies on an IP network to extend data and voice

capacities. The IP network can be used to connect about 15 sites to

allow communication among personnel that are in different geographic

locations. This network also comes in handy when a company wants to

increase area coverage in one site if there are physical barriers.

Linked Capacity Plus

This is an optional feature that is available on the Motorola DP2400.

It is a multi-site digital trunking configuration designed for

MOTOTRBRO platform. The feature is used to control the enhanced

capacity offered by Capacity Plus. It also boosts the increased area

coverage capacity offered by IP Site Connect to ensure employees who

are in different locations remain in contact.

Transit Interrupt

This optional feature allows users to cut short other radio

conversations to send critical communication precisely where and when

it is required.

Privacy

There are two privacy options to choose from when you purchase the

Motorola DP2400 including enhanced and basic privacy. These are

optional features that come with in built scrambling to give you

additional security.

Missed Calls Alert

You do not have to worry about missing calls when you do not have the

portable radio on your person. The device has a feature that allows

you to receive missed calls alerts.

Busy Channel Lockout

If you are busy on a certain channel, you can lockout other calls from

coming in to ensure interrupted communication during crucial moment.

Hardy Design

The Motorola DP2400 is designed for outdoor use. It is sealed tightly

to protect it from dust and wind. It also has an IP55 water protection

rating to prevent damage in case it comes into contact with water.

If you are thinking of upgrading your communication systems, the

Motorola DP2400 is an ideal choice because it will allow you to use

your current analogue system before you can migrate to a digital one.

It a good choice to if you want to ensure a smooth transition.

Twelfth Doctor To Battle Vikings (And Other Series 9-Related Rumours)

Just a few short weeks after series 8 of the long-running sci-fi show garnered a Craft Award at the BAFTAs (for ‘Deep Breath’s excellent T-Rex sequences), shooting is already under way for Block 3 (that’s episodes 5 6, in case you were wondering) of Series 9. Phew! Don’t these guys ever take a break?

According to www.doctorwhotv.co.uk, series 9 will see everybody’s favourite Time Lord and his trusty companion having a Viking-themed adventure, guest starring Game of Thrones actress Maisie Williams. Cast and crew have begun filming at Cosmeston Medieval Village, and leaked on-set photos appear to show crewmembers hard at work building period-specific boats. Other leaked info points to a showdown between The Doctor and the Norse God Odin. Should be fun.

The village will also be the setting for the brand-new monster that was officially unveiled by the BBC last week. Looking like a giant Warhammer figure brought magically to life, the monster may (or may not) be called The Cyclone and the teaser photos already have online fans buzzing.

Meanwhile, other on-set photos (leaked by Twitter user Amberlabamba) appear to show star Peter Capaldi in a new outfit, specifically, a pair of Tartan trousers that knowingly remind us of Twelve’s innate Scottishness, whilst also recalling some of the outfits worn by Second Doctor Patrick Troughton.

…He’s keeping the Doc Martens, though.

The costume change is also interesting because Capaldi’s initial series 8 outfit, a stylish, scaled back Crombie coat (designed specifically with cosplay in mind), also recalled an outfit worn by Jon Pertwee’s Third Doctor during the 1970’s. It certainly looks like the BBC costume department are taking a bit of inspiration from the show’s early days. Its all good, just as long as he leaves the six-foot scarf at home – some things aren’t meant to be touched!

…And that goes TRIPLE for any Technicolor dream coats that the costume department might be planning to unleash on us.

In other Who news, it appears that director Hettie MacDonald, best known by Whovians for her sterling work on the Tenth Doctor episode Blink, will be returning to direct a couple of U.N.I.T-related episodes entitled The Magician’s Apprentice and The Witch’s Familiar, which are set to act as a two-part series’ opener. The adventure will probably feature the return of Jemma Redgrave as Kate Stewart, daughter of the legendary Brigadier Lethbridge-Stewart.

Other cast members announced (or rumoured) for series 9 guest slots are Game of Thrones and Ripper Street actor Paul Kaye, comedian Rufus Hound, The Royal Shakespeare Company’s Kelly Hunter (who may or may not be reprising her role as The Shadow Architect from Series 4’s The Stolen Earth) and Clare Higgins, who recently appeared in the Eighth Doctor mini-episode The Night of The Doctor as The High Priestess of The Karn Sisterhood.

Michelle Gomez will also return as Missy – the female incarnation of The Master, as seen throughout series 8.

A particularly juicy rumour (apparently started by The Daily Mirror) has the series returning The Doctor to the Dalek homeworld Skaro, whereupon the Time Lord must contemplate whether or not to murder his nemesis Davros, creator of The Daleks, during childhood. The episode, if indeed it is an episode at all, would therefore re-tread philosophical ground first walked during Terry Nation’s classic Fourth Doctor serial Genesis of the Daleks.

The story may also pick up on the as-yet unused Davros origin story written by former series boss Russell T. Davies, which was cut from series four’s The Stolen Earth/Journeys End two-parter (it can be read in Davies’ Doctor Who companion book The Writers Tale). If this is the case, then this proposed episode might also explain the return of Kelly Hunter to the Whoniverse, for obvious reasons.

Of course, you can never trust the rumour mill too wantonly, but if the idea of a series that features The Sisterhood of Karn, The Shadow Proclamation, Davros, The Master and Odin doesn’t float your (long)boat, then, quite frankly, I’m not entirely sure why you read this far…

New Technology May Double Radio Frequency Data Capacity

A team of Columbia Engineering researchers has invented a technology—full-duplex radio integrated circuits (ICs)—that can be implemented in nanoscale CMOS to enable simultaneous transmission and reception at the same frequency in a wireless radio. Up to now, this has been thought to be impossible: transmitters and receivers either work at different times or at the same time but at different frequencies. The Columbia team, led by Electrical Engineering Associate Professor Harish Krishnaswamy, is the first to demonstrate an IC that can accomplish this. The researchers presented their work at the International Solid-State Circuits Conference (ISSCC) in San Francisco on February 25.

CoSMIC (Columbia high-Speed and Mm-wave IC) Lab full-duplex transceiver IC that can be implemented in nanoscale CMOS to enable simultaneous transmission and reception at the same frequency in a wireless radio

“This is a game-changer,” says Krishnaswamy, director of the Columbia high-Speed and Mm-wave IC (CoSMIC) Lab. “By leveraging our new technology, networks can effectively double the frequency spectrum resources available for devices like smartphones and tablets.”

In the era of Big Data, the current frequency spectrum crisis is one of the biggest challenges researchers are grappling with and it is clear that today’s wireless networks will not be able to support tomorrow’s data deluge. Today’s standards, such as 4G/LTE, already support 40 different frequency bands, and there is no space left at radio frequencies for future expansion. At the same time, the grand challenge of the next-generation 5G network is to increase the data capacity by 1,000 times.

So the ability to have a transmitter and receiver re-use the same frequency has the potential to immediately double the data capacity of today’s networks. Krishnaswamy notes that other research groups and startup companies have demonstrated the theoretical feasibility of simultaneous transmission and reception at the same frequency, but no one has yet been able to build tiny nanoscale ICs with this capability.

“Our work is the first to demonstrate an IC that can receive and transmit simultaneously,” he says. “Doing this in an IC is critical if we are to have widespread impact and bring this functionality to handheld devices such as cellular handsets, mobile devices such as tablets for WiFi, and in cellular and WiFi base stations to support full duplex communications.”

The biggest challenge the team faced with full duplex was canceling the transmitter’s echo. Imagine that you are trying to listen to someone whisper from far away while at the same time someone else is yelling while standing next to you. If you can cancel the echo of the person yelling, you can hear the other person whispering.

“If everyone could do this, everyone could talk and listen at the same time, and conversations would take half the amount of time and resources as they take right now,” explains Jin Zhou, Krishnaswamy’s PhD student and the paper’s lead author. “Transmitter echo or ‘self-interference’ cancellation has been a fundamental challenge, especially when performed in a tiny nanoscale IC, and we have found a way to solve that challenge.”

Krishnaswamy and Zhou plan next to test a number of full-duplex nodes to understand what the gains are at the network level. “We are working closely with Electrical Engineering Associate Professor Gil Zussman and his PhD student Jelena Marasevic, who are network theory experts here at Columbia Engineering,” Krishnaswamy adds. “It will be very exciting if we are indeed able to deliver the promised performance gains.”

This work was funded by the DARPA RF-FPGA program

Thankyou to columbia.edu for the tireless research, this really is an exciting invention, the possibilities if this can be brought to our industry are unbelievable.

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