Blog

Why do you get the error of No Contacts?

Many customers tell us their Ailunce HD1 keep getting the error of No Contacts by email. Do you encounter the problem? Why do you get the error of No Contacts? there are two key points to pay attention to for you. ...

How to enter standby, DFU, initialization mode?

Many customers get errors when upgrading firmware because the radio doesn't enter DFU mode successfully. So, we need to distingguishi standby mode, DFU mode, and initialization mode to prevent operation errors. ...

Read more Ailunce HD1, initialization mode, Standby mode, DFU mode

IARU Region 2 Seeks Help in Remaking Amateur Radio for the 21st Century

International Amateur Radio Union (IARU) Region 2 (the Americas) is looking for a few volunteers to work together to brainstorm ideas and possible actions to increase ham radio’s attractiveness for the 21st century. ...

Read more YOTA in amateur radio, IARU Region 2, young radio amateur

Retevis HK008 2-Pin Active Speaker Mic with Volume Knob

There are many speaker mics without voice knob in the market. Retevis release a new speaker HK008 with adjustable voice knob. We can adjust the voice through the speaker mic, not only relay on the radio voice knob. ...

Amateur Satellite Fuji 3 (FO-29) Operation Schedule 3.2020

The operation of Fuji No.3 (FO-29) has been unstable, but the transmitter will be turned on in the next pass. Since the date and time are in UTC, add 9 hours to convert to Japan time. ...

Read more Amateur Satellite Fuji 3 (FO-29)

Polarization of Antennna

The polarization of antennas refer to the space vector direction of the electric field of the antenna in its maximum radiation direction. There are three polarizations including linear polarization, circular polarization, and elliptical polarization. Among them, linear polarization and circular polarization are more common. ...

Retevis RT94 Smart Repeater Digital+LTE Converged Communication System

The Retevis's new generation of wide-narrow converged communication wireless intercom smart system integrates DMR, analog and other narrow-band private network technologies &3G / 4G LTE, WLAN and other wide-band technologies to provide end-to-end voice, data and other full-service convergence solutions. ...

Read more Retevis RT94, DMR Repeater, LTE