To properly answer this question, we must first consider the broad types of walkie-talkies involved.
Firstly, the radios need to be ones that use the same basic frequency band. Most "business" or "consumer" walkie-talkies will work on either the UHF band (400 - 470MHz) or the VHF band (136 - 174MHz).
It is not possible to get a VHF radio to "talk to" a UHF radio.
Then, you need to work out if your radios are programmable to many different frequencies, or if they are the fixed-frequency licence free type (often called "PMR446 radios).
You can (usually) find out what type of radios you have by removing the battery from the back of the radio, and examining the information label that is often located under the battery. On the label will usually be printed:
Most professional walkie-talkie radios can be programmed to use literally any of thousands of different frequencies using some PC software, which is provided by their manufacturer.
The user just "sees" a simple channel number, which they can select using a control knob. But "behind" this simple "channel number" is the actual frequency that this channel number has been set to use.
Even if you had two walkie-talkies of the same make and model, if they have not been programmed to use the same frequencies, they will not communicate with each other.
In summary, any two or more brands of walkie-talkie CAN be made to work with each other, provided that they are on the same frequency band, AND provided that they are or can be programmed to use the same frequencies.
But they will not necessarily communicate together straight away, or "out of the box", because they may well be set to use totally different frequencies.
We sell a wide variety of walkie-talkies, and prospective customers often ask us if we can make our radios "talk to" some other radios that they already have. We can usually get them talking if you ask us to do so.
Often, in order to achieve this, we may ask you to bring or send to us one of your existing walkie-talkies, so that we can get the new ones that you are buying from us communicating with your existing walkie-talkies
If you need to buy more walkie-talkies, please look at our WIDE RANGE OF WALKIE TALKIES FOR SALE, and call us on 020 7328 9792 or email us at: firstname.lastname@example.org to discuss your requirements.
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No matter what kind of event you are organising, we have walkie-talkie radios to suit your needs for short and long term hire.
We have megaphones / loudhailers / bullhorns for hire.
For many events attended by the general public, a megaphone is a useful tool to address and control the crowds. Get your message across!