H-777 How to connect with Repeater Controller?

What’s theTR10 Repeater Controller? In some specific cases, if we need a farther distance,we have to use some tools like Repeater Controller(加C9063A 超链接) to increase the range of the walkie-talkie so that it’s more convenient for our happy communication.But how much do you know about the TR10 Repeater Controller?How long it will extend the range of the radios? The TR10 is a […]


How to make H-777 with RT21 RT-5R compatible?

The necessary condition for Retevis H-777, RT21 and RT-5R compatible is same frequency and same CTCSS. H-777:400-470MHz UHF analog radio RT21:400-480MHz FRS analog walkie talkies RT-5R:136-174/400-520MHz dual band keypad programmable hand-held transceiver Therefore, there is a common frequency range between the three of them. By programming them, they will be changed to same frequency and […]

How to use the RT82 built in GPS to report APRS location

Automatic Packet Reporting System (APRS) is an amateur radio-based system for real time digital communications of information of immediate value in the local area. Data can include object Global Positioning System (GPS) coordinates, weather station telemetry, text messages, announcements, queries, and other telemetry. APRS data can be displayed on a map, which can show stations, objects, tracks of moving objects, weather stations, […]

Solutions de dysfonctionnement de talkie-walkie Retevis RT388

Il y a beaucoup de questions sur le dysfonctionnement de talkie-walkie Retevis RT388. Si votre talkie-walkie Retevis RT388 est défectueux, vous pouvez voir cet article.   Ici les trois problèmes principaux et les solutions de talkie-walkie Retevis RT388:   1.Le talkie-walkie ne s’allume pas? Veuillez déboulonner la batterie et installer encore.   2.La communication ne […]