Download 1.Click Download now, to download the file. When the File Download window appears, click Save or Save this program to disk and click OK. The Save In: window appears. From the Save In: field, click the down arrow then click to select Desktop and click Save. The file will download to your desktop. Furthermore, check if all the cords and wires are properly attached and update the driver for your sound card to the latest version. Press Windows key + R to open a Run window and type “mmsys.cpl“. Hit Enter to open the Sound Properties. Go to the Playback and select your playback device that is capable of outputting 5.1 sound. Download and install these drivers if you are using the same adapter: Download Here. To install the Baum RBT40 display on Windows with NVDA, please follows these instructions: You need to undestand the number of the COM port that is emulated over the USB adapter. Press Windows key and type “devmgmt.msc”, press ENTER to open Device Manager. Step 6: Choose the correct communication port (check in computer-device manager) Step 7: Click” Read from Radio” in “Program” Column Step 8: Write the date, such as “RX frequency”, “TX frequency” CTC/DCS DEC and CTC/DCS ENC in to the channels. For example: RX frequency:452.12500 CTC/DCS DEC: 69.30 TX frequency 452.12500 CTC/DCS.

How to programme RT21?
Retevis RT21 is a hot selling model, elegant, economical price, with scramber function to make your conversation more confidential.

Now let’s go to business, do you know how to programme RT21 when you get a new radio at hand?

Same Retevis radio model no. is with same default settings.
For new RT21, just switch the new radios in same channel, they can communicate directly.

Step:1 Please download and install RT21 USB driver (USB Universal Driver) in RETEVIS official website https://www.retevis.com/resources-center/
Step 2: You need a programming cable C9018A
Step 3: Connect your RT21 with you PC, using programming cable.
Step 4: Turn on the radio RT21.
Step 5: Now we come to RT21 software interface

Step 6: Choose the correct communication port
(check in computer-device manager)
Step 7: Click” Read from Radio” in “Program” Column
Step 8: Write the date, such as “RX frequency”, “TX frequency” CTC/DCS DEC and CTC/DCS ENC in to the channels

For example:
RX frequency:452.12500
CTC/DCS DEC: 69.30
TX frequency 452.12500
CTC/DCS ENC: 69.30

Finally Step 9: Click “Write to Radio”. Then all datas will be saved to radio.

Need know more about RT21? Please feel feel to write to us kam@retevis.com, thanks!

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