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Popular
- "Digital Makes a Difference" - benefits over analogue radio equipment
- HYTERA X1p Revealed - the slimmest full colour display / keypad digital covert radio on the market
- House of Fraser Oxford Street to host this year's Christmas Lights switch-on
- The world's first colour display covert digital radio - Motorola MotoTRBO SL4000/4010 Series
- Advantages and disadvantages of different two-way radio systems
- The use of Radios for Lone Worker Health & Safety (Part 2)
- Wall to Wall links the Underground and Cross Rail Networks in London
- "I AM SEXY and I know it" - Hytera X1 / X1e UK Covert Two Way Radio
Auction House "Christies", London
Just wanted to say that I have been working for Christies for 14 years now and when I first arrived i was given a folder and told I was in charge of the radio equipment, much to my amazement. As I opened the folder ...
MJF Corporate Guarding
Initially Wall to Wall Communications Ltd attended site for full testing across all participating buildings. Due to the high power output of the radios and the distance between each location, they are able to ...
Senator Security
Senator Security Services are very pleased to be associated with Wall to Wall Communications. This is due to their operational management structure, competitiveness and the support in the service they supply. Our relationship has developed over 5 Years and they have supported ...
Jury’s Inns Hotel Group
Wall to Wall Communications Ltd has supplied the two way radio communications equipment to our individual hotels for many years, the equipment, service and support has been of the highest standard. Our account manager is always helpful with enquiries and very informative ...
Royal Botanic Gardens Kew
I have been using Wall to Wall communications for the last 10 years, their knowledge experience and customer service are second to none. They have maintained my radio communication systems and supplied radios for events in large numbers at short notice on occasions at a very competitive price ...
"Digital Makes a Difference" - benefits over analogue radio equipment
Tuesday, 06 September 2011 09:29
This short article is about digital two way radios. There is so much information out there and most of it is rather confusing as it favours specific manufacturers only. We at Wall to Wall Communications hope you will find it helpful if you are on a crossroad and still not sure whether to migrate from analogue to digital radio systems.
According to Ofcom (Office of Communications, the UK regulator), the supply of available Private Mobile Radio (PMR) channels is almost exhausted in some areas. Undoubtedly, the radio comms industry needs more capacity for its current and future requirements and the way forward is adopting the spectrum-efficient digital modes.
Digital standard is here to stay.
Digital two way radios are available in both licenced and licence-free forms. They digitise speech like mobile phones and transmit over radio waves, whereas analogue equipment only uses audible speech. Being capable of voice, data and a range of other features and applications in both conventional and trunking mode, digital radios have received global recognitions.
There are two current protocols used to send digital signals – Time-Division Multiple-Access (TDMA) and Frequency-Division Multiple-Access (FDMA).
The main benefits of digital radios over analogue radios:
- Better clarity of voice – through the use of codecs and other techniques, digital processing is more consistent at screening out noise
- Doubled capacity in existing licensed channels (as below)
Digital TDMA retains the 12.5 kHz channel band width and divides it into two alternating 30 ms timeslots where each timeslot acts as a separate communication path or channel
Digital FDMA narrowband technology has a 6.25 kHz channel bandwidth which allows twice the amount of channels in the standard 12.5 kHz channel allocation, allowing two simultaneous independent calls on one 12.5 kHz channel
- Reduced equipment and licensing costs – TDMA, doubles the capacity of a single RF channel, increasing the number of radio users that can be supported
- Better performance at the edge of the coverage area – there are no scratchy noises until the signal has completely gone beyond the radio frequency footprint. Longer battery life and greater power efficiency is achieved as the radio transmits only half of the time every other 30 ms (TDMA), and for FDMA the reduced noise components (with the narrower channel bandwidth) improve receiver sensitivity, which makes the radio transmit at a reduced power as well.
- Backwards compatibility with legacy analogue systems – all digital equipment works in both analogue and digital mode. The addition of digital radios to existing analogue systems allows progressive migration to a full digital system.
- Easier integration with IP-based data applications, text messaging, telemetry and external tools, such as GPS and telephone interconnect – with digital radios, it is possible to separate voice and data streams into different communication paths in order to improve quality of service and utilise a computer to control the whole system via sophisticated software.
- Secure connection – last but not least, digital signal encryption is much easier to implement and more secure (as opposed to “scrambling” with analogue).
Please feel free to explore our digital product range section.
For further advice and consultation, do not hesitate to give us a call on 0208 770 1007 or 0500 016 500 (free phone) or send us an e-mail
Recent News
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Compact and rugged radio system deployed for Byrne Bros
A new, compact and rugged radio system successfully deployed for Byrne Bros by WTW Bespoke Systems Team!
With Health & Safety paramount on construction sites, it’s important that credence is given to effective communications.
Byrne Bros (Formwork) is one of the UK's premier concrete frame contractors. A leader that has built its reputation on the skill of its people, the trust and integrity of its many long-standing clients, its talent for innovation and passion for perfection.
Wall to Wall Radio Communications were appointed to install a system for Byrne Bros whilst working on site at another of their clients, Imperial College.
This had to meet a standard to ensure coverage in a difficult area of construction. Although using analogue radios, a mixture of Icom and Motorola, these have been programmed with the complex functions of encoding and call functions.
The system enables users to work in difficult areas of the college whilst ensuring their safety and professionalism to the highest standard as expected by all parties.
We’re proud to be the approved supplier of radio communications equipment for Byrne Bros and look forward to a long and continued association. If you want to find out more about how we could help you deliver slick and secure operations then contact us at info@walltowallcomms.co.uk or call our effective sales team on 020 8770 1007 -
State of the art digital radio system deployed at Christie's
New, state of the art digital radio system successfully deployed at Christie's by WTW Bespoke Systems Team!
When thousands of pounds change hands with simply the nod of a head or the wave of a hand, it’s fair to say that effective communications becomes pretty important!
London based auctioneers, Christie's recently engaged Wall To Wall Radio Communications to ensure that the radio operation across their King Street auction house were at a standard fit for one of the world’s leading auction houses. Christie's have been a long standing client and decided to commission a new bespoke system to include a complex mix of Hytera digital radio-handsets, headsets, base-station and repeaters all with extensive security and alarm software application features.
The system enables Christie’s staff to deliver a world class service to their clients and bidders, all with security, reliability and professionalism as the utmost priority.
We’re proud to supply both of Christie’s London-based sales rooms with their radio communications equipment. If you want to find out more about how we could help you deliver slick and secure operations then contact us at info@walltowallcomms.co.uk or call our effective sales team on 020 8770 1007
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Kobi Levi pops up in "Shoe Galleries"
The Israeli footwear designer Kobi Levi will be making a debut in the UK displaying his unique women footwear collection at Selfridges Shoe Galleries - the largest shoe department in the world (multiple galleries / 35 000 sq. ft. in total).
The exclusive pop-up boutique opened on Monday, 22 October, housing surreal footwear. This is art that really must be seen to be believed!
To support the soft opening of the new department, Wall to Wall Communications supplied a covert radio system in 007Bond style. If you want and need great designer shoes, pop-in to Selfridges and visit Kobi Levi, you definitely won’t be disappointed.
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Movember campaign being run by Wall to Wall Radio Communications based in Sutton, Surrey, is being supported by the girls too!!!
If you have any radio repairs during Movember, we will collect them
free of charge ... and you never know, a Movember girl may pay you a visit.
For further information of this and other special offers please telephone
020 8770 1007 or go to our Special Offers page.
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