Tag Archives :N

When use on ham radio, for example, sometimes we know the repeater frequency, but dont know what is the CTCSS/DCS. At this time, it is very helpful if your radio has the CTCSS/DCS scan function.  ...

Retevis RB85 is the noise reduction commercial walkie-talkie launched by Retevis in 2021, but after the product was launched, many hams had a very heated discussion below the related Youtube video, because they believed that noise reduction is also very important for HAM.  ...

Ailunce HD1 is a dual-band and dual standby DMR amateur radio developed by Ailunce. Since its release, many versions of firmware and software have been upgraded according to customer needs.  ...

As we all known that the amateur radio not only as a hobby attract many hams, but also it is a tool for emergency rescue when there is no phone signals. In the United States, The Amateur Radio Emergency Service® (ARES) consists of licensed amateurs who have voluntarily registered their qualifications and equipment, with their local ARES leadership, for communications duty in the public service when disaster strikes.   ...

The scrambler function of the analog walkie-talkie is to change or mix the communication voice and informations.  ...

How does the GPS of Ailunce HD1 work with Retevis RT3S?  ...

Today, let us talk about the the difference between GMRS wide band and narrow band.  ...

The IARU satellite frequency coordination panel report an application has been submitted for an amateur radio payload to be hosted on the Tiangong space station.  ...

Why set bandwidth for Ailunce HD1？  ...

When we set up a handheld UV radio, we can hear the information of the same channel no matter whether the bandwidth is set to wideband or narrowband, but when we use an SDR radio, if we set different bandwidths, we can often hear different sounds. So, how do we set the bandwidth of the SDR radio correctly?  ...