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Category Archives :Radio knowledge

Super-Full Radio Usage Skills During Multi-Vehicle Travel

Nowadays, many car friends have various self-driving FB activities, and many car friends organize their colleagues, relatives, and friends to drive together so that there will be problems with communication requirements between vehicles, radio will play a very important role in self-driving and multi-vehicle travel.  ...

Read more  Radio Usage Skills,  Multi-Vehicle Travel

What Aspects Should be Paid Attention to When Installing a Mobile Radio?

An important principle to be followed by the host installation is to be able to provide enough heat dissipation space because when the radio host is in the transmitting state, the heat is very large.  ...

Read more  Mobile Radio Installation

The Specification of the use of Walkie-Talkie in the Motorcade Travel

What I want to share with you today is the specification of the use of walkie-talkie in motorcade travel. You must know that the mobile radio is not only about buying and installing, but also about the way of speaking during communication.  ...

Read more  Mobile Radio,  Motorcade Travel

Why is the Mobile Radio Easy to Burn the Power Amplifier?

"If the antenna feed is not well-matched, it will burn the power amplifier." That is, if the standing wave ratio is high, there will be the risk of burning the power amplifier.  ...

Read more  SWR,  power amplifier

What is the difference between roaming and scanning of the walkie-talkie?

Roaming refers to setting the radio to automatically move between them according to which repeater has a strong signal.  ...

Read more  Roaming,  Scanning

What is the Difference between CTCSS and DCS on Two-Way Radios?

When using two-way radios or walkie-talkies, we all use CTCSS/DCS or Motorola system PL tones or DPL.  It is divided into CTCSS and DCS. Both CTCSS and DCS are all used on analog two way radios. Do you know what is the difference between CTCSS and DCS?   ...

Read more  CTCSS and DCS,  difference between CTCSS and DCS

The Actual Communication Distance of the Digital Walkie Talkie

Because ultrashort wave communication is a line-of-sight transmission method, data signals are affected by buildings, hilly terrain, and trees, and electromagnetic waves are blocked and affected, which affect the facts.  ...

Read more  Communication Distance

What Role does Shortwave Communication play in Wireless Communication?

Shortwave is the originator of radio. When the radio was invented, the transmission method was shortwave. In modern times, the frequency band used by radio has expanded to ultrashort wave, microwave, and even higher, but short wave still plays an extremely important role.   ...

Read more  Shortwave,  emergency communications

Comparison of Amateur Radio Digital Voice Modes

Understanding the different modes of digital voice can enable amateurs to clearly understand the bandwidth and transmission rate used by the digital voice mode. It can also help us understand which mode is easier to get started and which mode should be experienced in the future.  ...

Read more  Digital Voice,  DMR,  C4FM,  D-Star

What's the baud Rate?

The baud rate is the number of code symbols transmitted per second. It is a measure of the symbol transmission rate. For electronic communication, the baud rate is the modulation rate, which refers to the rate at which the effective data signal modulates the carrier, that is, the number of times the carrier modulation state changes per unit time.  ...

Read more  Baud Rate,  Amateur radio