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What's the meaning of dB in amateur radio?

When talking about the gain of antennas and power amplifiers, the dB is often mentioned, but do you know what it means and how do we use it?  ...

Read more  dB,  Power,  Mic gain

How to set MIC Gain of radios?

Mic gain is one of the important settings of amateur radio. It controls the volume of transmission. Do you know how to set the mic gain? the blog will show how to set the right mic gain.  ...

Read more  Mic Gain,  Amateur Radio

Travel with your Ailunce HD1 to Win Gifts

Are you ready to travel with your Ailunce HD1? Now you only need to take a video or pictures to show your Ailunce HD1 and post it. You can get a Surprise gift. As long as you actively participate, everyone has a gift!  ...

Read more  Ailunce HD1,  Summer,  Travel

How to use the Rolling Code of Retevis RT73?

If the radio supports the rolling code, you just need to make one codeplug to program many radios. the blog will show how to use the Rolling Code of Retevis RT73.  ...

Read more  Rolling Code,  Mobile Radio

What's OTAP Radio?

OTAP is short for Over-The-Air Programming. OTAP radio doesn't need to use the programming cable to connect the walkie-talkie with the terminal (computer or mobile phone), and remotely program the walkie-talkie through the network or base station.  ...

Read more  Amateur Radio,  OTAP radio

What functions do you need for your desktop microphone

The desktop microphone is one of the commonly used devices in the Ham Room. However, there are many desktop microphones on the market, with various functions. The following are some features we sorted out. What features do you need?  ...

Read more  Amateur Radio,  Desktop microphone,  Features

Why do you need a desktop microphone for your walkie-talkie?

With the popularity of radio, many hams built their radio rooms. In addition to basic equipment such as radio and power supply, we found that they always like to purchase desktop microphones. Do you know why they have to buy a desktop microphone when owning a handheld microphone?  ...

Read more  Desktop microphone,  Amateur Radio

ACS of Amateur Radio

ACS is short for Adjacent Channel Selectivity. It is a measure of the receiver's ability to receive useful modulated signals and is an important parameter of radio receivers.  ...

Read more  Amateur Radio,  ACS

What's the Spring antenna

The spring antenna is also called the helical inductive antenna, which is a kind of helical antenna. It can radiate and receive radio waves. when transmitting, it can convert high-frequency current into electromagnetic waves; when receiving, it can convert electromagnetic waves into the high-frequency current. So it plays a very important role in radio communication.  ...

Read more  Amateur Radio,  Spring Antenna

What's PSK31?

PSK31 is the abbreviation of Phase Shift Keying 31.25 Hz. PSK31 is an excellent digital modulation mode and just needs extremely narrow bandwidth. its transmission rate is always maintained at 31.25 bits per second, so it is called PSK31. It is mainly developed by the SP9VPC and G3PLX.  ...

Read more  Amateur Radio,  PSK31,  SW