Sunday 29 March 2015

How Does a Two Way Radio Work? (Asked by Neil from Reading)

Hi Neil,

Did you get a two way radio set from Santa by any chance? Lol.

Anyway, onto your question...

A two way radio basically is a radio that can send and receive signals. If a radio can both transmit and receive, it is known as a transceiver (see what they did there?) Two or more users can use a transceiver in order to communicate on a shared channel.

Essentially, a two way radio works by receiving radio waves through the air and broadcasting a return signal. The antenna on the radio houses a series of electrons, which dictate the channel being picked up by the user (different groups of electrons will respond to different channels). These electrons translate the radio waves into electrical impulses, which are then fed to a small processor. The processor then converts the impulses into a signal and the radio’s speakers then play that signal. The whole process, amazingly, is pretty much instant.

Two way radios convert sound into radio waves and also convert radio waves into sound. Ergo, I can speak to you, like so:

Chris: “Hi Neil. Can you hear me? Over”

Once I push the PTT (push to talk) button and speak, the vibrations of my voice shake a small membrane inside my radio’s microphone (not a million miles removed from the one that exists in the human ear). My radio’s processor then converts those vibrations into a simple electrical signal. The radio pushes the signal to the antenna, which then pushes it out on the audio channel selected.

The electrons in your antenna become excited (steady on there, fella!) and translate the waves into electrical impulses, which are then ‘decoded’ by the processor and played out via your speakers.

So, you hear this on your radio and you reply.

Neil: “Hey 2wayradionline. Yeah, I can hear you just fine. Thanks for the answer. Over”

Whereupon the entire process takes place all over again.

And so on...

I hope that answers your question. Have fun, 2wayradionline.co.uk!

Saturday 14 March 2015

Cambridge United v Manchester United: Sepura kit out U’s stewards with new radios in time for big match

SEPURA has kitted out Cambridge United stewards with radios ahead of tomorrow's big FA Cup with Manchester United.

The portable DMR radios replace the club's analogue communication system and will be officially used for the first time at the R Costings Abbey Stadium when Richard Money's side face the Red Devils in the sell-out fourth round fixture.

U's chief executive Jez George said: "The forthcoming FA Cup match is one of the biggest event in the history of our club, we are aware of the global exposure that it will give to Cambridge United and need to ensure that everything runs smoothly and successfully on the day.

"Thanks to our new Sepura digital radios we'll be ready to overcome any challenges that may arise during the event."

Read more: http://www.cambridge-news.co.uk/Cambridge-United-v-Manchester-United-Sepura-kit-U/story-25907956-detail/story.html#ixzz3Q7DHgeWn

Saturday 7 March 2015

A Look At The Different Motorola Radio Earpieces

When it comes to discreet affairs, there definitely must be a discreet communication. Whether it is a security personnel or just a private group of designated people. Radios are used for communication between compatible devices within a specified location. Nevertheless, it would be less comfortable if someone talks via the radio and everyone hear the entire communication. Given the different types of two-way radios in the market, they usually come with a compatible earpiece. Among the most common radios are the Motorola radios. It would be super discreet and stylish if you had a Motorola radio earpiece to accompany your device. Some of the ideal Motorola 2-way radio earpiece connectors at EarpieceOnline include the following;

CP040 & DP4400 2-Pin Connector

This Motorola 2-pin connector can work with a number of Motorola 2-way radios. It can also support some of the old version radios such as the GP040 and the GP300. Some of the novel version of radios that are compatible to this earpiece include the DP1400 and the DP1000.

Features of the connector

• It has a changeable Foam sock so that you can replace if it has worn out.

• The earpiece also has a comfortable and flexible C-shaped earpiece.

• There is a secure moulded ear hook, for holding firm on the ear.

• It provides high quality audio.

• It comes with a noise reducing microphone for enhanced reception of incoming voice messages.

• The earpiece has a plastic that is covered by a label clip PTT button. The wire PTT is separated from the microphone and an ear hangar earpiece.

• It has a RoHS compliant feature and comes with Motorola earpiece 2-pin connector GP300/CP040/XTN and GP340 adapters.

DP3400 & DP3600 Multi Connector

This is a multi pin connector works with all DP3000 & DP4000 range of radios, with a 12-pin connector, it slots perfect onto the side of the DP radio and is securely screwed in so that the earpiece is securely locked in.

Features

• It is incorporated with Kevlar Reinforced for better surveillance and security.

• It has a secure fit tube connector, to avoid accidents of it cut from rough encounters.

• It offers a high quality audio.

• The earpiece has a Lapel clip PTT button and a separate wire PTT. That is separated from a noise reduction microphone and an acoustic tube. The acoustic tube runs over the ear, the FBI style.

• There is a changeable connector for flexible modification and flexible mushroom plugs that you can replace whenever.

DP2400 & DP2600 multi connector

This is yet another different multi-pin connector that lets you connect to the DP2000 range of radios. This 8-pin connector fits on to the side of the radio and is locked in with a 'pull out and slot-in' connector, reducing the risk of broken screws or damage to the radio.

Features

• The acoustic tube runs over the ear and it has a secure fit connector for super surveillance and comfort.

• It has a separate wire PPT different from the acoustic tube and a microphone that reduces noise from the surrounding.

• The mushroom plugs are changeable and you can simply remove them when they are loose or worn out.

• It produces a high quality audio that reduces strain even when in a noisy environment.

GP340 & GP680

This multi connector is compatible the GP range of radios, including the GP340 and GP680. The Connector is a 13-pin connector and is secured on the side of the radio, with a screw-in to secure the earpiece to the radio.

Features

• This multi connector has a high quality audio reception. That makes it comfortable to use anywhere, even in a crowded, noisy place.

• There is a microphone, which is separate from a wire PTT and an acoustic tube. The microphone is a noise reducing microphone, that helps to make the other end-user be comfortable.

• It has a RoHS compliant and an over the ear acoustic tube that holds firm to the ear.

• There is an adjustable connector that is versatile to other devices.

An elegant and well fitted earpiece will not only promote surveillance, but it will also be comfortable on the ear. That will ensure it is safe from damages in rough situations. A Motorola radio earpiece will be beneficial if you want a comfortable communication without having to speak loudly over the radio. Some of the radios are also slightly heavy, which makes them more comfortable when using an earpiece, that is worn beneath the clothing.