2013年1月1日星期二

Top Motorola two way radios

If you are in the market for a new 2 way radio and have never purchased one before, you are about to be bombarded with choices! There are numerous two way radios out there. Each radio has different functionality and is suited for a particular industry. You don’t want to buy too much radio, as it will put a big dent in your wallet. If you buy a radio with not enough features, then your need won’t be satisfied.Below is a list of the top Motorola two way radios and the industry in which they are best suited. They are organized by radio class. If you would like a complete list, then visit the two way radio section on CommUSA’s website. It is one of the most comprehensive on the web.
MOTOTRBO: prisons, hospitality, golf courses
PR860: Public utility, heavy duty construction
EX500: casinos, hospitality, theme parks
DTR550: Hospitals, health care
CP200: Education, night clubs
BPR40: Education, light manufacturing
CP110: Retail
These choices do not change a lot over the years. Motorola may release one near radio a year. The CP110, MOTOTRBO, and BPR40 were the last radios released in the past three years.

New two way radio chargers from Motorola

Motorola has released a couple of new chargers for the Pro-series and MOTOTRBO series. These chargers are compariable to the Motorola WPLN4187 and WPLN4212 models.
These chargers have displays that show:
Battery capacity and voltage while charging and at completion of charge.
Time remaining to complete rapid charging (NiCd and NiMH only)
Current battery charge status.
The battery’s unique serial number, part number and chemistry.
Part numbers of the new Motorola chargers:
WPLN4181a: XTS MUC with one display
WPLN4239a: MOTOTRBO multi unit charger with one display.
WPLN4144a: Pro Series – these radios start with PR (PR400, PR860) and has one display.
Motorola usually releases one new radio a year, but often release new 2 way radio chargers or other accessories.

How to join the Airwave radio network

Airwave is a nationwide digital 2 way radio service for the UK’s emergency services. It provides coverage of 99% of the UK’s land mass through a network of over 4,000 base stations using Tetra technology.
Widely regarded as the model for nationwide digital 2 way radio networks around the world, Airwave has successfully delivered a robust digital 2 way radio service which is relied upon every day by the blue light emergency services.
Protected the security and integrity of Airwave is paramount, therefore access has to be restricted to only the emergency services. Airwave is not available to commercial organisations.
In 2012 LionComms will be launching their digital two way radio service which is estimated to cover over 97% of the UK population. The lightweight and rugged handsets will provide clear digital audio and GPS tracking.
If you want to buy Airwave 2 way radios but are not part of a blue light or public safety organisation, consider the LionComms service.

Where to buy Dolphin 2 way radios

Dolphin Telecom was the UK’s only nationwide digital 2 way radio service. Their network covered over 96% of the UK population and at their peak they had over 76,000 subscribers.
Dolphin 2 way radio customers included the Police, Army, councils, private ambulances, couriers, vehicle recovery and security. For these organisations having a digital 2 way radio service with nationwide “go anywhere” coverage was essential to their business.
The Motorola D700 digital Tetra radio was the most commonly used handset and these units often appear on ebay. However without the Dolphin network these radios are useless. Even if they could be reprogrammed, without the Dolphin network their range would be limited to line of sight. These digital radios were only of use when they had access to their network which gave them almost unlimited range.
Tariffs were £25 per month with free push to talk calls between handsets in the same company. Radio calls to handsets outside the home company were charged extra. Phone calls and text messages were charged in a similar way to mobile phones today.
Sadly Dolphin Telecom went into administration in 2004 and their digital 2 way radio service is no longer available to buy. Since the Dolphin radio network shut down there has been continued demand for a replacement nationwide digital 2 way radio service for business and consumers.
In 2012 LionComms will be launching their digital two way radio service which is estimated to cover over 97% of the UK population. The lightweight and rugged handsets will provide clear digital audio and GPS tracking.

Loud and Clear – Best practices for 2 way radio users

Unintelligible communications can be problem on any 2 way radio system, whether it’s analogue or digital.
Loud noises such as traffic, sirens, aircraft or large crowds can drown out communication. Poor radio technique can also cause fading audio and distortion.
Fortunately there are a few simple steps you can take today to make sure you use your 2 way radio correctly and keep your communication loud and clear. These steps will work regardless of whether you have an analogue or digital radio.
Recommendations
The IAFC published three recommendations to improve 2 way radio communications which apply to any 2 way radio users in any organisation. The recommendations were: Shield. Move. Talk.
1: Shield the microphone from noise and water
Turn away from the source of any loud noises. Use your jacket to shield the radio from rain or water to prevent water covering the microphone.
2: Move the microphone close your mouth
The microphone should be directly in front of your mouth at a distance of 1 – 2 inches. This is much closer than most 2 way radio users expect.
3: Talk in a loud, clear, controlled voice
Do not shout into the radio as this will cause your voice to distort

What is a two way radio?

With mobile phones becoming ubiquitous it’s all too easy to think two way radio has faded into history. The reality is very different with sales of two way radio at an all time high. This article aims to describe what 2 way radio is and when it’s used.
“A two way radio is a device that can both receive and transmit over radio waves.”
Two way radio is commonly used where you have groups of people performing a similar role who need to be simultaneously informed of events. For example security officers, event marshals, farm workers, transportation operators and couriers are all groups of people who need to be aware of events.
The reason two way radio has remained popular in the age of mobile phone communication is because short messages can be passed to the group very quickly. There is no dialling or answering of calls and messages are one-to-many instead of one-to-one.
There are lots of different types of two way radio available and it can sometimes be challenging to choose the right one for your needs. In most cases it’s sensible to speak to a local two way radio specialist who can advise you on the best two way radio solution. These can be found on the internet or in your business telephone directory.

5 Steps To Improve Two Way Radio Battery Life

A flat battery in a 2 way radio can be a frustrating experience. Here are some quick tips to improve the lifetime of your battery.
1 – Go Digital
Digital radios use a technology called Time Division Multiple Access. When you are transmitting with an analogue radio it sends a continuous radio signal. Digital radios with TDMA rapidly switch the transmitter on and off, effectively only transmitting half the time. This can increase battery life by up to 40%.
2 – Be Brief
Reduce the time you spend transmitting by sticking the principles of Accuracy, Brevity, Clarity and Discipline to convey a message quickly. Aside from saving battery life, your colleagues will thank you for not tying up the radio channel and allowing them to speak. A great example of good radio communication practise called AirwaveSpeak can be downloaded from the National Policing Improvement Authority (pdf).
3 – Disable GPS
Global Positioning Systems (GPS) consumes lots of battery power. Consider disabling GPS if you don’t need it, or reduce the polling frequency. You may consider on-demand positioning, where the radio only activates it’s GPS positioning system when polled by a dispatcher.
4 – Reduce Transmission Power
Configure your radio to use the minimum output power necessary to communicate effectively. Some digital technologies automatically adjust transmission power, while others need manual settings by your radio dealer. The lower the transmission power the longer your battery will last.
5 – Use Battery Conditioners
All batteries suffer from a condition called the “memory effect” including Lithium-Ion. This results in the battery no longer charging back to full capacity. To avoid this, use a conditioning battery charger which can detect memory effect and try to correct it. If you don’t have a conditioning batter charger, try to fully discharge the battery before recharging it. Regular top-up charges are most likely to result in memory effect.