GSJ UAV Drone Signal Jammer Blocker Gun for DJI Drone

Key Features

• It is widely used to block different kinds or brands of UAV Drone like DJI;
• Adopt UHF broadband seamless interference technology
• Single-channel adjustable switch technology controls power output, with a battery power display.
• The higher the effective power (channel power), the greater the interference distance.
• Effective segmentation only interferes with drone control and video transmission frequencies, and will not interfere with other frequencies.
• Imported devices. The slow start circuit design can avoid the sparking phenomenon caused by the mechanical switch, the integration is high and the work is stable.
• Built-in battery, plug-in battery, can be replaced at any time, with about 1-hour battery life and 4 hours charging.
• 4/5SMA/N-type ports for connecting directional antennas (900M/2.4G/GPS/5.2G/5.8G)
• One power charging interface (DC24V IN)

Specification

• For 4 Bands Option

Output terminal	Operating frequency	Average output power	Channel output power
GPS	1550-1620MHz	45dBm	20dBm/30KHz(min)
2.4G	2380-2500MHz	45dBm	20dBm/30KHz(min)
5.8G	5720-5850MHz	43dBm	20dBm/30KHz(min)
800-900M	840-930MHz	44dBm	20dBm/30KHz(min)
Power supply	AC220V-DC5V
Interference distance:	>1000M
Power consumption	≥192W
Weight	5.0Kg
Dimensions (W×H×L)	7×22×58CM

• For 5 Bands Option

Output terminal	Operating frequency	Average output power	Channel output power
GPS	1550-1620MHz	45dBm	20dBm/30KHz(min)
2.4G	2380-2500MHz	45dBm	20dBm/30KHz(min)
5.2G	5050-5350MHz	45dBm	20dBm/30KHz(min)
5.8G	5720-5850MHz	43dBm	20dBm/30KHz(min)
800-900M	840-930MHz	44dBm	20dBm/30KHz(min)
Power supply	AC220V-DC5V
Interference distance:	>1000M
Power consumption	≥192W
Weight	5.0Kg
Dimensions (W×H×L)	7×22×58CM

 

Usage

Use the antenna to correspond to the center of the shielding area, as shown in the figure below:

Working Mode

• Force to Land: When all switches are turned on, the drone is forced to land.
• Return: When the GPS is turned off and 2.4G/5.8G/900M is turned on, the drone is out of control, and the drone returns at this time.
• Lose Position: When the 2.4G/5.8G/900M is turned off and the GPS is turned on, the drone loses its positioning, and the drone can be controlled remotely at this time.

Specifically for visible drone interference, the effective distance is about 100 meters away from the drone and the interference is more than 1500 meters.

Wireless communication must ensure a sufficient carrier-to-interference ratio (signal-to-noise ratio) in order to effectively receive and complete communication. The communication signal jammer is to destroy the reception conditions of the UAV by generating an interference signal of the same frequency as the UAV receiving and cutting off the communication connection between the UAV and the remote control transmission, so as to achieve the effect of interfering with the communication.

The interference power is fixed, and the shielding radius of the unobstructed space is determined by the path attenuation and the control of the remote control transmission signal level. The table below provides a comparison table of distance and path attenuation. Then the coverage radius can be determined by the output channel power of the jammer, the remote control signal level, and the gain of the coverage line. The formula is as follows:

Pch+Gat-L-FAF≥Prx

In the formula:

     Pch: Minimum channel power output from the jammer

      Gat: Antenna gain

      L: Path attenuation

      FAF: Path loss additional value, take 6-8dB

      Prix: Received signal strength

 

Distance and Attenuation Comparison Table

L=32+ 20logd +20logf+ FAF     f in megahertz d distance in kilometers

Distance（m）	900MHz Attenuation（dB）	1575MHz Attenuation（dB）	Distance（m）	2400MHz Attenuation（dB）	5800MHz Attenuation（dB）
1	38	44	25	66	72
2	44	50	30	67.5	73.5
3	48	54	35	69	75
4	50	56	40	70	76
5	52	58	45	71	77
6	53.5	59.5	50	72	78
7	55	61	60	73.5	79.5
8	56	62	70	75	81
9	57	63	80	76	82
10	58	64	90	77	83
15	61.5	67.5	100	78	84
20	64	70	200	84	90