High Quality best distance 2 way radio,Factory Price best distance 2 way radio For Sale

Will rainy days affect radio communications? Feb 16, 2023
In fact, the attenuation of rain on EMW(electromagnetic waves) below 10 GHz is relatively slight, but for EMW above 10 GHz, the impact of rain attenuation is very obvious. When EMW passes through the rainfall area, the rain not only absorbs the energy of the radio wave, but also scatters it. This absorption and scattering together form electromagnetic wave attenuation. Scattering can also ca...
- EMW
- VHF/UHF band
- amateur radio
How much does the gain antenna improve the signal of the walkie-talkie? Feb 23, 2023
As we all know, walkie-talkies can make the signal stronger by adding gain antenna. Today we continue to talk about the topic of gain antennas. First of all, we need to understand the function of the gain antenna. Do you know how satellites receive communication signals? Logically speaking, satellites are far away from the earth. The higher the frequency, the greater the loss. So why do satellite ...
- walkie-talkies
- gain antenna
- handheld radio
Do you know the actual talking distance of DMR radio? Mar 02, 2023
With the development of the economy, the people's requirements for long range communication have increased, and DMR radios have gradually begun to be used in public fields such as taxi dispatching, security, property management services, construction sites, hotels and restaurants. So how many kilometers can the longest call distance of a DMR radio reach? In an ideal situation (without any obstruct...
- long range communication
- DMR radios
- digital walkie-talkies
Why do walkie-talkies below 0.5W not need a license? Mar 10, 2023
The critical value of 0.5W is defined because in the field of amateur radio communications, it is generally believed that equipment below 0.5W has low output power, limited use distance, and is unlikely to cause interference to other equipment or radio and television. Therefore, these low-power devices are generally considered not to require approval and authorization, such as some small radio tra...
- amateur radio
- kid walkie talkies
- GMRS radio
Can I get a radio license as a minor? Mar 22, 2023
"I'm in junior high school now. I love radio. I also learned some amateur radio knowledge by myself. I often communicate with my friends using FRS walkie-talkies. Can I get a radio license?" A seemingly simple question, but also asked a lot of HAM. 1. Can children take the radio station operator's license test? In China，there is no age limit for participating in Class A and Class B operational tec...
- amateur radio
- FRS walkie-talkies
- radio station call signs
What is the difference between dual standby and dual reception of walkie-talkies? Apr 08, 2023
Dual standby: Dual band radios generally display two lines up and down, which are generally called the main channel and the secondary channel. When there is no signal coming, the main channel and the secondary channel are in standby mode. When there is a signal coming in, the walkie-talkie will choose the signal that comes first. When there is already a signal coming in, another signal cannot come...
- 2 Way Radio
- Dual band radios
- walkie-talkie
How to enhance the signal when using a walkie-talkie in the basement? Apr 22, 2023
Walkie-talkies are commonly used in underground parking lots in residential areas, shopping malls, and hotels. However, communication signals can be weak due to the underground location, which affects communication. How can we enhance the signal when using a walkie-talkie in an underground parking lot? In general, the reinforced concrete walls in the basement of residential buildings are quite thi...
- Walkie-talkies
- handheld radio
- dual standby Two Way Radio
How do Hams know if there is a repeater station locally? May 03, 2023
The role of the repeater in two-way radios is to increase the communication distance of the radios. When the distance between two radios exceeds the range of the radio signal, the radio will not receive an effective signal, requiring the use of a repeater. The repeater, also known as a relay station or forwarding station, is an essential equipment in the field of specialized mobile communication. ...
- two-way radios
- amateur radio enthusiasts
- DMR digital radios

1 ... 4 5 6 7 8 9

A total of 9 pages

Categories

Blog

New Blog

Tags

Search