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Amateur radio enthusiasts have always been regarded as special "players". Most of them have noble industry spirit and social responsibility. However, radio amateurs are also a complex group: there are repeater builders, DX players, DIY technicians, etc., which kind do you belong to as a radio amateur?  ...

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.  ...

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.  ...

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.  ...

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.  ...

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.  ...

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.  ...

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.  ...

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.  ...

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.  ...