Category Archives :Amateur Radio Topics

Why is your signal report of 50W radio not as good as the one just 5W radio? That's because in addition to the environmental loss, the power of the radio has a lot of loss in the antenna system. So many hams like to install them antenna outdoor to reduce antenna system loss. But what do you need to know when installing an outdoor antenna?  ...

SWR is short for Standing Wave Ratio. It's a parameter often used by hams to indicate if the antenna matchs with the transmitting radio. For SWR value, it has different effects on the built-in and external antennas. so there are differnt SWR standard required for antennas with the different working environment.  ...

In my country, there also will have a QSO activity via digital repeater or MMDVM Hotspot  every Saturday. To promote hams communication from different provinces, on this digital activity, not only use DMR Radio, but also YSF, C4FM , P25 radio and Wires-X.  ...

GP antennas is short for GroundPlaneAntenna. These antennas are with a ground plane. Their elements are usually mounted by vertical ground, so they are also called vertical GP antennas. The antennas has a low emission inclination, and its coverage is similar to a circle with the radius of the emission point, so it is indispensable as a simple and effective DX weapon. The disadvantage is that it is a little noisy.  ...

Dipole antenna is the earliest, most widely, and the most commonly used simplest antenna in SW. But do you know which is dipole antenna in our commonly used antennas? How to work?  ...

There are many types of shortwave antennas, there are finished products or self-made, the price difference is from hundreds to tens of thousands.  Large antennas have good performance and many bands, but they occupy a large area and generally need to be installed on an antenna tower. So purchase antennas must choose the appropriate antenna or a combination of multiple antennas according to their actual situation.   ...

For hams, there are many bands to use, such as UHF, VHF, HF, and so on. For Radio Operation Certificate Examination, frequency bands learning is very important item. why new ham needs to learn frequency bands? the blog will tell you.  ...

Do you know what are QSO modes of amateur radio? There are five modes for hams to QSO, including Audio, Morse code, RTTY, TV(SSTV) and Packet QSO modes. According to a recent research, the most used mode for hams to is audio QSO, and the next is Morse code.  ...

Why you love ham radio? and what are the use of ham radio? For fun. And to learn about radios and antennas and new communication technologies and the earth’s ionosphere.  ...

There are too types of antennas for us to select, but what's the best antenna? how to select antenna for our radios? there are some tips for your reference in the blog.  ...