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My New Ailunce HD1 review by K0PIR

The HD1 is easier to program from the front than the other DMR radios. Also, while using the HD1, the menu can be accessed, unlike other handhelds.  ...

Read more  Ailunce HD1 Build Quality,  Amateur radio Ailunce HD1

Ailunce HD1 review by Rowen Warren(KE0RTL)

Ailunce HD1 review by Rowen Warren(KE0RTL)  ...

Read more  Ailunce HD1 Review

What is emergency rescue communication?

Emergency rescue communication refers to the communication activities carried out when some major emergencies (such as all kinds of major natural disasters, large-scale terrorist attacks, etc.) occur, resulting in a large number of casualties and heavy losses of social property.  ...

Read more  emergency rescue communication

2019 CQ World Wide WPX Contest

CQ World Wide WPX Contest SSB is coming on this weekend March 30-31, 2019.  ...

Read more  CQ World Wide WPX Contest SSB

Ailunce HS1 SSB HF SDR Amateur Transceiver

Ailunce HS1 SSB HF SDR HAM Transceiver 0.5MHz-30MHz HF SDR Transceiver  ...

Read more  HS1,  HF

QSL Card Usage in Amateur Radio

Amateur radio operators exchange QSL cards to confirm two-way radio contact between stations. Each card contains details about one or more contacts, the station, and its operator. At a minimum, this includes the call sign of both stations participating in the contact, the time and date when it occurred (usually specified in UTC), the radio frequency or band used, the mode of transmission used, and a signal report.  ...

Read more  QSL

The Basic Information of Yagi Antenna

As an electromagnetic transducer element, the position of the antenna in the entire radio communication system is very important. The quality directly affects the distance and effect of the transmission and reception. In other words, there is no radio communication without the antenna.  ...

Read more  Yagi Antenna

Radio Antenna Erection and Standing Wave Ratio

We know the VSWR of the antenna system is close to 1:1. If it is close to 1:1, it is good. I often hear this question: But what if I can't reach 1? If the standing wave ratio is as small as a few, is the antenna qualified?  ...

Read more  SWR,  Antenna