Have you ever noticed that many railway workers keep their handheld devices close at hand during work, yet handle all their duties perfectly? Today, let’s take a look at the various professional devices in railway staff’s hands and explore their rich and practical functions. The station-train wireless interactive handheld terminal, simply called the handheld device, […]

The field of emergency management, especially high-risk industries such as petrochemicals and coal mines, places extremely high demands on the safety and reliability of communication equipment. As a “special equipment” to meet the communication needs of high-risk environments, explosion-proof walkie-talkies are becoming an indispensable tool in production safety and fire rescue with their unique advantages.

Retevis RT8 was released in April 2017 and sold well in the European market that year! Widely welcomed by amateur radio enthusiasts, this year we will show the disassembly and evaluation of RT8:Retevis RT8 DMR digital walkie-talkie, supports IP67 waterproof and dustproof, anti-drop, 5W UHF/VHF, 1000 channels, digital/analog mode, LCD display, supports text message function.

The picture shows Motorola’s Sabre series walkie-talkie, which has been widely purchased and used by law enforcement departments such as JD and JC in Western countries led by the United States since the 1980s. Saber walkie-talkie, which was once the best-performing walkie-talkie in the world, has been divided into three generations. The first and second

Unless you understand these 40 antenna knowledge, don’t say you know how to play Ham Radios. Newcomers who have just started often pay special attention to the power of radio equipment and overlook the importance of antenna systems. Every time I check in at the relay network, I often find that the signal report of

Continuation of classic practicality first YAESU’s FT-817 is well-known in the amateur radio industry and is almost a private treasure for senior amateur radio enthusiasts. FT-817 is widely praised by amateur radio enthusiasts for its small size, support for multiple communication frequency bands, and built-in battery power supply. In the amateur radio activities carried out

Many friends who use walkie talkies often have the question: How far is the communication distance of walkie talkies? In fact, in the field of wireless communication, there is generally no concept of “walkie talkie distance” because walkie talkies rely on radio waves to transmit signals, which can be obstructed and interfered with by many

Puxing PX-777 PLUS Service Manual

Software echo repeater Download on https://drive.google.com/file/d/1iX1FBEjdRWh5MxLs_rAv8YKzJZ6VtYqU/view?usp=drive_link Another software repeater download on https://drive.google.com/file/d/1L_67QPS8pO-FSfd8TImw5KbhkBXzgCOp/view?usp=drive_link

A suitable version of Zello (v1.37) for creating an Internet relay or a network of Internet relays.+Connection diagram and description of the correct settings for the program to work. It works as an FRN client, but you can communicate from any device (Android, Apple, Windows Phone, Windows PC. Software Download on https://drive.google.com/file/d/1yTBcu4Az2QE_mIYe4zhUvDgFALccWh8T/view?usp=drive_link