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What is the Difference Between Narrowband and Wideband on GMRS Radios?

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

Read more  narrowband,  wideband,  GMRS radio

The Chinese Space Station will Carry Ham Radio Equipment in Q3 2022

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.  ...

Read more  IARU satellite,  Chinese Space Station

Are you ready to take pictures? International Space Station 145.80MHz Russian Astronauts Send SSTV Images for 3 days.

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

Read more  ISS,  SSTV,  SSTV Images

Why set bandwidth for Ailunce HD1

Why set bandwidth for Ailunce HD1?  ...

Read more  Amateur Radio,  bandwith

How to set the bandwith of the SDR tranceiver

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?  ...

Read more  Bandwith,  SDR

How to setup the amateur repeater

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. ​  ...

Read more  Repeater,  AmateurRadio

How to set and use Retevis RT97P DMR repeater?

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

Read more  Retevis,  Repeater

How to Program Retevis RA685 to Works on an Analog 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.  ...

Read more  Retevis RA685