The Challenges of Concealed Installation of Vehicle Signal Jammers

Analyzing the Limitations and Negative Effects of Installing Antennas Inside the Vehicle

In order to achieve covert usage, some customers have purchased high-power signal jammers and installed them in their vehicles. However, during the vehicle modification process, it is not allowed to install antennas on the exterior or mount them on the roof. This raises the question: Can the antennas of a vehicle signal jammer be installed inside the vehicle? This article will analyze the advantages and disadvantages of concealing the installation of signal jammers and the effects it has on signal coverage.

Advantages of Concealed Installation:

Installing the main unit, RF connection cables, and multiple antennas of the signal jammer inside the vehicle provides a completely inconspicuous appearance from the outside. Onlookers will have no idea about the equipment installed inside the vehicle or its jamming capabilities. The concealed installation ensures both effectiveness and discretion.

Disadvantages of Installing Antennas Inside the Vehicle:

  1. Reduced Signal Coverage:
  2. The majority of a vehicle’s body is made of metal, which causes significant signal loss and interference. Additionally, the enclosed structure of the vehicle results in multiple signal reflections, limiting the transmission range and coverage. Consequently, a portion of the emitted signal is lost, significantly reducing the effectiveness of the signal jammer. Furthermore, the height of the antennas inside the vehicle is lower compared to mounting them on the roof, resulting in a decreased coverage radius.

  3. Health Risks:
  4. When multiple antennas of a high-power signal jammer are installed inside the vehicle, prolonged exposure to the emitted electromagnetic radiation can have adverse effects on the health of the driver or passengers. The close proximity to the antennas and the continuous reflection of signals within the vehicle can lead to excessive electromagnetic radiation, exceeding safety standards and posing health risks.

  5. Space Constraints:
  6. Installing the main unit and antennas of the Signal Jammer inside the vehicle consumes a significant amount of interior space. Considering the need to maintain a certain distance between antennas operating on different frequency bands, the rear seats and trunk of the vehicle will be occupied, limiting the available space for passengers and storage.


While concealing the installation of a vehicle signal jammer by placing the main unit and antennas inside the vehicle provides a discreet appearance, it comes with several limitations and negative effects. The reduced signal coverage, health risks associated with excessive electromagnetic radiation, and space constraints make it impractical to install antennas inside the vehicle. Therefore, it is recommended to explore alternative installation methods that prioritize both effectiveness and safety.