Despite the great progress in mobile network communications, shortwave antennas are still favored by many people. But do you know why? This is largely due to the advantages of shortwave.
Let’s explore them from the insights of shortwave antenna manufacturers.
1.Independence from network infrastructure:
Shortwave is the only long-distance communication method that does not rely on network hubs and active relay systems. In times of war or disaster, various communication networks may be destroyed, and even satellites may become targets of attack. On the other hand, shortwave provides unparalleled survivability and autonomous communication capabilities.
2.Coverage in challenging environments:
In areas such as mountains, deserts, and oceans where ultra-shortwave coverage is limited or unavailable, shortwave becomes indispensable. It is a reliable communication option for these remote and hard-to-reach places.
3.Cost-effectiveness:
Compared with satellite communications, shortwave communications do not require phone bills, thereby reducing operating costs. This affordable price makes it an ideal choice for those seeking efficient long-distance communications.
Coverage is often an important consideration when choosing a jammer. So, what factors affect the jammer range?
Let’s explore this from the perspective of signal jammer manufacturers:
1) Output power:
- Shielded output power
- Antenna radiation performance (antenna gain, directivity, etc.)
- Other related factors
2) Interference method:
Modern mobile phones mainly use digital signals, which have strong anti-interference capabilities. Using analog signal technology to interfere with digital signals will produce adverse effects. Therefore, digital signal interference is essential for effectively destroying digital signals. Compared with jammers using analog signal interference technology, jammers using digital interference signal technology have lower power requirements and higher efficiency.
3) Indoor vs. outdoor environment:
There are great differences in signal synthesis, attenuation, reflection and other factors in indoor and outdoor environments. Due to these different factors, it is very complicated to analyze mobile phone signals and interference signals in indoor spaces.
4) Local signal strength and quality:
The signal strength and quality of nearby mobile phone networks have a significant impact on the interference effect. Different mobile phones may react differently, and devices with strong ability to receive weak signals may not be easily interfered.
5) Base station direction and interference area:
The direction of the base station and the coverage of the Cell Phone Jammer will affect the effectiveness of signal shielding.
6) Shielding distance and radio signal transmission characteristics:
Shielding distance is usually discussed in terms of radio signal attenuation in free space. According to the transmission theory formula, the signal strength decreases by 6dB for every doubling of the transmission distance (resulting in a four-fold reduction in signal power).
