How to avoid Drone Jammer?

HereLink
1

HI

I was wonder if there are any way to avoid the Drone Jammers. HL works at 2.4ghz so will be affected.

What about the Here+ GPS? can be affected?

thanks!

1 Like
2

The best way to defeat a Jammer is to understand how they work.
99% of them jam the 2.4 and 5.8Ghz frequencies.
https://www.jammer-store.com/drone-jammers/

So don’t fly using those frequencies would be a good start.
You can build drones to fly using 900Mhz, 433Mhz, 72Mhz and 27Mhz
I have never worried about jamming but I have used all of those frequencies before.

If the jammer is blocking GPS then you have a more complex problem.
You would need an Optical sensor to hold your position.

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3

Thanks! thats is was I thinking, to use a DragonLink 433MHz and 1.3GHz video signal.

About the GPS, you are right, Im going to find a more efective distance sensor to get more high without GPS.

4

1.3 GHz is third harmonic of 433 MHz which would require a filter and operation in the 433 band requires license. I assume that isn’t an issue since you are looking to avoid jammers.

1 Like
5

thanks, what kind of filter do you mean? Can you send me a link?

thanks!

6

You will need low pass filter for 433 MHz. It only allows the 433 signal out while attenuating the higher harmonic frequencies. Other option is to go with a 2.4 GHZ video system.

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9

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10

There are two types of remote controls: analogue and digital. Analogue remote controls use pulse width modulation, while digital remote controls use digital modulation techniques. The 2.4 GHz and 5 GHz bands, which would be familiar to anyone operating a DJI drone, are created using digital modulation techniques. My DJI Mavic Air can function at both 2.4 GHz and 5 GHz, and I’ve found that a 5 GHz signal is more effective in connecting with the drone in congested city areas.

Source: https://www.dronejammerfactory.com/is-it-possible-to-jam-a-drone-signal/