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Category Archives :Amateur Radio Topics

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

What kind of earpieces do you want to use with your walkie-talkie?

Earpieces are very important in the daily use of walkie-talkies. They can not only protect the privacy of our QSO, but also make the reception effect better. According to different wearing ways, earpieces can be divided into in-ear, ear-hook earpieces, and headsets.  ...

Read more  Earpieces,  Amateur Radio,  walkie talkie

How to set up FM satellite communication channels

The common satellites use FM transponders, so a simple FM walkie-talkie can realize FM satellite communication. So what should be paid attention to when setting up an FM satellite communication channels?  ...

Read more  Amateur Radio,  FM satellite

What is Radio Direction Finding?

Radio direction-finding is the process of using instruments to determine the direction of radio waves based on the propagation characteristics of electromagnetic waves.   ...

Read more  RDA,  ARDA

What's LORA?

Lora is short for Long Range. It is a low-power LAN wireless standard created by Semtech company. Its biggest feature is that it can travel farther than other wireless methods under the same power consumption condition, achieving low power consumption and Long-distance unity, it is 3-5 times longer than the traditional radio frequency communication distance under the same power consumption.  ...

Read more  Lora,  Long range,  Amateur Radio

How to choose antenna adapter?

Many antennas of amateur radios are detachable, then customers can replace the higher gain antennas to extend the communication range according to their needs. However, the non-original high-gain antenna interface can't connect to our radio directly, or the antenna is too long to directly connect horizontally, we need to choose a suitable adapter to connect them. So, how to choose the right adapter?  ...

Read more  Antenna adapter,  RetevisRT73

Three common types of radio scanner

There are three common types of radio scanners for us to select, including the basic analog scanner, the analog trunking scanner, and the digital scanner.  ...

Read more  Amateur Radio,  scanner type,  Digital scanner

What's amateur radio scanner?

Many hams not only like to make QSO with their friends but also scan the channels near them. so they are more willing to use the scanner to scan and monitor directly than using the scanning function of the walkie-talkie.  ...

Read more  AmateurRadio,  Scanner