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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.  ...

Read more  active speaker mic HK008

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.  ...

Read more  Polarization of Antennna

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

Retevis RT95 Mobile Radio Display Icon

Most of radio's display is LCD. RT95 use TFT display. The technology is more complicated than LCD. It is also a special point of RT95.Today let learn what's the meaning of the display icon.  ...

Read more  Display Icon,  Retevis RT95

Retevis RT95 Mobile Radio Front and Rear Panels Introduction

We know that the RT95 is a dual band analog mobile radio. It is an amateur mobile radio. Today let learn something about its front and rear pannel design.  ...

Read more  RT95,  Front Pannel,  Rear Panel,  Speaker panel

Retevis RT95 Analog Ham Mobile Radio Transceiver

RT95 Mobile Radio has nice housing, stoutness & stability, advanced and reliable functions, perfect & valuable. This amateur mobile radio especially designs for drivers and it pursues philosophy of innovation and practicality.  ...

Read more  Retevis RT95,  Mobile Radio Transceiver

AMSAT Opposes FCC Plan to Delete the 3.4 GHz Band

The amateur satellite organization AMSAT commented on a notice from the Federal Communications Commission that proposed the deletion of the 3.3-3.5 GHz (9 cm band) amateur band, of which 3.40-3.41 GHz was originally allocated for the amateur satellite service.  ...

Read more  AMSAT Opposes FCC Plan to Delete the 3.4 GHz Band

How to transmit long distance for UHF and VHF ?

As we all know, the transmission distance of VHF and UHF signals is very limited in normal, but under certain conditions, long-distance or even ultra-long-distance transmission can also be achieved.  ...

Read more  VHF&UHF long-distance transmission,  Amateur radio