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The History of China's Amateur Radio Competition in My Eyes 6

The History of China's Amateur Radio Competition in My Eyes 6, In 1990-1991, the group station operators were younger  ...

Read more  China's Amateur Radio Competition

The Advantages of Digital Filters

Digital filter can effectively filter out the frequency point of a specific frequency or the frequency other than the frequency point and is a device or circuit that has a signal processing effect. It is equivalent to the "sieve" of frequency.  ...

Read more  digital filter,  digital filter advantage

The History of China's Amateur Radio Competition in My Eyes 5

China Amateur radio competition rising phase of the cycle 1988-1989  ...

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Hams Save Lives at Critical Times from The Two Emergency Rescues

Recently Local HAMs use a repeater to assist in rescues. Let's have a look at how they did a repeater call to help prevent more damage.    ...

Read more  Local HAMs assist in recent rescues,  ham save lives in Emergency Rescues

Retevis First Single Frequency Repeater is Coming.

Single-frequency repeater, it is a repeater that uses only one frequency to achieve the repeater function. It allocates one timeslot to receive a signal and the other to transmit it at the same frequency, using DMO mode to extend radio coverage.  ...

Read more  single frequency repeater,  retevis RT74

Two New Chinese Ham Satellites Expected to Launch in September

Two new Chinese amateur radio satellites are expected to launch on September 15.  ...

Read more  amateur radio satellites,  CAMSAT

The History of China's Amateur Radio Competition in My Eyes 2

The start of amateur radio activities in our country is not too late. In the 1920s, Shanghai was already the economic and trade center of East Asia at that time. Not only commercial radio stations were introduced, but amateur radio activities were also brought into China.  ...

Read more  Amateur Radio Competition

The History of China's Amateur Radio Competition in My Eyes 1

The history of the global amateur radio competition has been nearly 100 years, and it has almost accompanied the development history of the entire amateur radio DX communication.  ...

Read more  Amateur Radio Competition