Blog

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.  ...

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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.  ...

2022 April 7 to April 8, International Space Station 145.80MHz Russian Astronauts Send SSTV Images for 3 days.  ...

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?  ...

Amateur frequency resources are provided by the country to all hams, so repeaters working in the amateur band, even if you set up and maintain them yourself, need to provide services for all hams in the coverage area, let's learn together today What problems should be paid attention to when setting up an amateur repeater. ​  ...

Retevis RT97P is a Mini and Portable size DMR repeater. Do you know how to set and use the repeater?  ...

As we all known, radio amateurs often connect to a repeter to extend the communication range. Today, we are going to take Retevis RA685 as an example to learn how to connect to an analog repeater.  ...