Category Archives :Amateur Radio Topics
What's APRS?
- Feb 28,2021
- Yamy
- 0 Comments
- Amateur Radio Topics
Many hams like to choose amateur radios with APRS function. Do you know what's APRS? How does it work? ...
Why do drivers who run long-distance buses carry walkie-talkies?
- Feb 27,2021
- Yolanda
- 0 Comments
- Amateur Radio Topics
Whether it’s driving or exploring outdoors, walkie-talkies are definitely the best choice, because as long as the walkie-talkies are within a certain range and the frequency is adjusted, they can communicate happily. No dialing is required, and no extra costs will be incurred. If you are driving with a fleet , So that you can communicate with each other. ...
What to pay attention to when using the electron tube amplifier
- Jan 29,2021
- Yamy
- 0 Comments
- Amateur Radio Topics
The Electron tube power amplifier is the most common power amplifier of hams. we summarize some precautions when use the Electron tube power amplifier in the blog. ...
What's power amplifier of Shortwave?
- Jan 28,2021
- Yamy
- 0 Comments
- Amateur Radio Topics
At present, most of the radios we use are within 100W, or even below 50W. But with the increasing electromagnetic interference in cities, it has become more and more difficult to make QSO with hams around the world with only these radios. In order to improve the quality of communication and increase the transmitting power of the radio, it is necessary to buy a short-wave high-power amplifier to work with our radios. ...
Why the Coax is 50 ohms?
- Jan 21,2021
- Yamy
- 0 Comments
- Amateur Radio Topics
If you play with the coaxial cable, you probably know it is available in a number of different impedances. but the most common is 50ohm coaxial cable for us to use for amateur radio. Do you know why is 50ohm, or any other number? ...
What's POTA?
- Nov 30,2020
- Yamy
- 0 Comments
- Amateur Radio Topics
POTA is short for Parks on the Air. It is a radio outdoor communication activity initiated by American Hams. The activity frequency bands include HF/UHF/VHF, etc., and the communication modes include voice, digital, CW, SSTV, etc. If you enjoy outdoor communication, you can participate in this activity by querying the NPOTA park map on Google Maps under the conditions of the operating permit. ...
Why and where do we need the antennas combiner
- Nov 30,2020
- Yamy
- 0 Comments
- Amateur Radio Topics
Combiner is a words often mentioned by hams who uses multi-band radios, so what is a combiner? Why do we need to use a combiner? Let’s learn more about the combiner today. ...
First acquaintance of the common balun in antennas
- Nov 28,2020
- Yamy
- 0 Comments
- Amateur Radio Topics
Balun is short for Balance To Unbalance Transformer. Balun can use to transmission between balanced and unbalanced, impedance transformation, and so on.There are current and voltage balun to select for us. ...
The commonly used English abbreviations of CW
- Sep 29,2020
- Yamy
- 0 Comments
- Amateur Radio Topics
In order to improve communication quality and communication efficiency of CW, people have invented and used various abbreviations in long-term practice, which is to abbreviate frequently used words and sentences in communication to one or a few letters. It has evolved and perfected and formed the abbreviation that is now commonly used internationally. There are two common rules for commonly used English abbreviations. ...
Four kinds of CW key
- Sep 28,2020
- Yamy
- 0 Comments
- Amateur Radio Topics
For CW morse key, now we most commonly use the double paddle automatic morse key. In fact, in addition to the automatic double paddle button, there are three types of morse keys including straight key, single paddle morse key and semi-automatic morse key. ...