Note: Due to COVID-19, the flights reduce and the delivery time may be delayed. Please understand. ×

+86 15093323284

 Longgang,ShenZhen, CN

Category Archives :Amateur Radio Topics

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

Why can't you connect to the repeater?

many customers would like to connect to the repeater, but sometimes they'll encounter errors, such as "repeater fail", and so on. Do you know why it is? today let's learn together.  ...

Read more  Ailunce HD1,  Amater Radio,  Repeater

What's APRS?

Many hams like to choose amateur radios with APRS function. Do you know what's APRS? How does it work?  ...

Read more  AilunceHD1,  Retevis RT73,  APRS

Why do drivers who run long-distance buses carry walkie-talkies?

Whether it’s driving or exploring outdoors, walkie-talkies are definitely the best choice, because as long as the walkie-talkies are within a certain range and the frequency is adjusted, they can communicate happily. No dialing is required, and no extra costs will be incurred. If you are driving with a fleet , So that you can communicate with each other.  ...

Read more  drivers carry walkie-talkies

What to pay attention to when using the electron tube amplifier

The Electron tube power amplifier is the most common power amplifier of hams. we summarize some precautions when use the Electron tube power amplifier in the blog.  ...

Read more  Amateur Radio,  Electron tube,  Power amplifier

What's power amplifier of Shortwave?

At present, most of the radios we use are within 100W, or even below 50W. But with the increasing electromagnetic interference in cities, it has become more and more difficult to make QSO with hams around the world with only these radios. In order to improve the quality of communication and increase the transmitting power of the radio, it is necessary to buy a short-wave high-power amplifier to work with our radios.  ...

Read more  Shortwave,  Power Amplifier,  Amateur Radio

Why the Coax is 50 ohms?

If you play with the coaxial cable, you probably know it is available in a number of different impedances. but the most common is 50ohm coaxial cable for us to use for amateur radio. Do you know why is 50ohm, or any other number?  ...

Read more  Coax cable,  AmateurRadio,  feeder cable

What's POTA?

POTA is short for Parks on the Air. It is a radio outdoor communication activity initiated by American Hams. The activity frequency bands include HF/UHF/VHF, etc., and the communication modes include voice, digital, CW, SSTV, etc. If you enjoy outdoor communication, you can participate in this activity by querying the NPOTA park map on Google Maps under the conditions of the operating permit.  ...

Read more  AmateurRadio,  POTA,  Outdoor

Why and where do we need the antennas combiner

Combiner is a words often mentioned by hams who uses multi-band radios, so what is a combiner? Why do we need to use a combiner? Let’s learn more about the combiner today.  ...

Read more  AmateurRadio,  Antenna,  Combiner