A new DMR model Retevis RT72, it is an upgrade of Retevis RT84, it has GPS function, and supports 130,000 digital contacts.  ...

When we check the "No RX Info when Operating Menu", there will be no caller information display when your radio receive a signal. Uncheck it, and we can set the receive information display time. It means how long the information box display after every communication.  ...

Many newbies email to us to ask how to program the Ailunce HD1. Today I'll show the detail setting steps of analog channel on radio and in software.  ...

Build your own equipment, It's fun and rewarding. Among the various homemade devices, the antenna is our most common.Today let's take a look at a variety of antenna adapter.  ...

Tutorial to set Ailunce HD1 GPS, and how to get Ailunce HD1 GPS location.  ...

Retevis RT77 is body worn camera with night vision. It is suit for law enforcement, police, security guard, motorcycle and bike enthusiasts. it with night vision camera 120 degree angle, fast charging and 8 hours recording.  ...

I have always wondered about the attraction of operating amateur radio. What is the benefit, what is the emotional payback?  ...

Have you used the scan function on the Retevis RT82? Do you know how to set the scan list? Let's study together.  ...

The background noise is a big difference between the walkie-talkie and the mobile phone. Under normal circumstances, the mobile phone basically has no background noise (regardless of the communication distance), but in the wireless communication of the walkie-talkie, the background noise is inevitable.  ...

Mini1300 4.3" LCD 0.1-1300MHz HF/VHF/UHF ANT SWR Antenna Analyzer Meter Tester.  ...