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Category Archives :Radio knowledge

The basic terminology of DMR Radio

Nowadays,DMR radios become very popular not only in amateur market but also business market. But There are various terms more specific to DMR that could cause some confusion.  ...

Read more  DMR terminology,  DMR Terms,  DMR Radio Settings

What's WSJT

WSJT is a computer program designed to perform basic amateur radio communications with very weak signals. JT4G, ECHO and FT8 are series of WSJT. Today we'll learn more about WSJT.  ...

Read more  WSJT&WSJT-X,  FT8,  JT4G

Do you really understand FM?

NFM is a narrowband frequency modulation method, which is suitable for communication signals with a channel bandwidth of 25kHz / 12.5kHz; WFM is a wideband frequency modulation method, which is suitable for receiving broadcast signals with a channel bandwidth of about 180kHz  ...

Read more  WFM,  NFM

What is the DMR Radio Zone?

Zones are just a way to manage large number of channels, much like file folders or directories on your computer.  ...

Read more  Radio Zone,  All Channels

What's explosion-proof walkie-talkies?

Do you know explosion-proof walkie talkie? Today, I'll share something related to you in the blog.  ...

Read more  explosion-proof walkie talkie,  Retevis RT56

Is There Anybody Listing to the Radio Broadcast Now?

Is there any body listing to the radio broadcast now? whether radio broadcast is going to fade away? In my opinion, the radio broadcast will not going away. It may be integrated into the cell phone, or it can exist in other ways.  ...

Read more  Radio Broadcast

A Radio Museum in Mexico City Subway Station

A Mexico City subway station boasts a hidden museum, complete with a working radio booth.  ...

Read more  Radio Museum

The Difference Between Walkie Talkie and Mobile Phone Antennas

Why does the walkie-talkie have a long external antenna, and most of the mobile phones are built-in antennas?  ...

Read more  Antenna,  Walkie Talkie,  Mobile Phone

How does the walkie-talkie work in emergency rescue operations?

The application of walkie-talkies in the field of emergency rescue is becoming more and more mature. For rescue fighters, walkie-talkies are not only a communication tool for them to keep in touch with the team, but also an important equipment for escorting them at critical moments.  ...

Read more  Emergency,  Waterproof Radio

How to Achieve Interoperability Between Different Models of Walkie-Talkies?

We all know that the default factory frequency of each manufacturer's walkie-talkie is different, so different brands of walkie-talkies can not communicate with each other directly. This is a concern of the majority of new hams.  ...

Read more  Different Model Communication