Usually the walkie-talkie can be programmed to change or set its own parameters (such as frequency or CTCSS). And the walkie-talkie without a keyboard needs to be programmed by connecting a computer through a programming cable. For example the Retevis RT21. Here are 2 ways about programming: 1. You could download the software from our […]
Programming of the Retevis RT21 Walkie Talkie Read More »
The RT21 walkie-talkie has alarm function and VOX function. Alarm function can help you find help when you are in danger. VOX function help you free from your hands and make hands-free calls. RT21 how to turn on the function? RT21 is a Analog walkie talkies,so you need to program to turn on the functions.This
RT21:How does turn on Alarming and VOX Function? Read More »
RT21:One walkie talkie can not talk with others When we buy walkie-talkies, there are always some problems which cause one of the walkie-talkie can not work together with others（such as RT21).But how to check the problems to fix it?you can find the reasons from the following aspects: Troubleshooting: 1.Adjust volume to the Maximum,and make sure
RT21 walkie talkies:Troubleshooting Read More »
Most of customer know the Retevis RT21 radio model, but they don’t know we designed some new combination for you,and it will be perfect for your use. Now we will introduce these combination for you,and you can choose them according to your needs. Retevis RT21 with DC charging base This is the most common RT21,
Retevis RT21 :multiple choices for you Read More »
The difference between RT21 walkie talkie and other encryption simulators The difference between the so-called Retevis RT21,other encryption simulators is the advantage of Retevis RT21 in terms of functions. The Retevis RT21 walkie talkie not only has CTCSS, but also has a Scrambler. The RT21 walkie talkie is ideal for security activities , because it
RT21: Distinguish from other encryption simulators Read More »
RT21 walkie talkies is suitable for all kinds of business，will have good performance in hotels, churches, restaurants, schools, construction sites and other businesses. At the same time, RT21 walkie talkies has a FRS frequency of 50 CTCSS / DCS that will keep your group communication away from interference. Now let’s take the example of
RT21 Walkie Talkies:How to set up for different departments Read More »
The Retevis RT21 is a simulator with no screen, the radio has been programmed to the same frequency before leaving the factory, so they can work directly. At the same time, because of its convenience, it is very popular. The superiority of Retevis RT21(before April,2018) The early RT21 frequency same with H-777 so that they
Retevis RT21 walkie talkie frequency updates Read More »
If you have a RT21,while other radios are different types from yours , what should you do?Do not worry,that is easy to communicate with them, please read the method below,let us take RT6 as an example. Step 1: programming RT21 radio For example: In channel one RX frequency:462.23750 CTC/DCS DEC: off TX frequency : 462.23750
How to make RT21 talk with different types of walkie talkies? Read More »
The battery of the Retevis RT21 is the rechargeable battery, reusable, practical and environmentally friendly. Retevis RT21 Specifications: Voltage: 3.7V Type: Li-ion Battery capacity: 1100mAh Weight: 68g The charging time of the of the retevis RT21 original battery is about 4 hours, the usage time is up to 10-12 hours, and the battery lasts longer
Retevis RT21 battery life Read More »
Comparison of Retevis H-777, Retevis RT21, H-777S Retevis RT21 is have the CTCSS and DCS function, Retevis RT21 work well for all various business, and it will have the good performance for hotel,church,restaurant,school,construction site and other business. The belt clip of RT21 is relatively large than these,Every radio have their belt clip and switch the
The difference between Retevis RT21 and other Read More »
