The signal jammer is a powerful device that can block any radio wave transmission. The army of the USA first used it during the Gulf War. The telecommunication in Iraq was cracked within a few minutes. Today, some commercial companies are using signal jammers for protection. For example, most security companies use GPS jammers to protect their clients from being tracked or a cell phone jammer to prevent overhearing.
How do Signal Jammers Work?
Before discussing whether or not signal blockers work, let’s talk about how they work. When you first purchase a signal blocker, it comes with two things
- A small antenna is attached to the side of the unit that receives the signal. This antenna is designed to pick up the signal from the device broadcasting. The more powerful the signal, the stronger the antenna needs to be.
- A circuit board inside the unit contains the electronics that process the signal and send it back to your device.
When you’re trying to use your mobile to stream video, music, or browse the Internet, the device sends its request via radio waves, and the antenna picks it up. It processes the data inside the circuit board and sends it back to your device using a different frequency. Your device can’t understand the data, so it just sits there waiting for a response.
With a signal blocker, however, the signal itself isn’t blocked. Instead, the blocker uses the signal from the original device to create a fake signal. When your device picks up that fake signal, it thinks it’s communicating with another device and responds accordingly. In reality, however, the signal blocker sends the data to a dummy device. All your device sees is a false communication coming back at it, so you never see the accurate data sent by the original device.
This doesn’t apply to every situation. If you have a Wi-Fi network set up for your home, a signal jammer only works if the original device was also connected to your home network. To begin with, it wouldn’t be able to intercept traffic between computers on your network because it wasn’t connected to the network.
Doesn’t sound very useful. Well, most folks aren’t interested in setting up a Wi-Fi network. But what if you’re talking to a friend on the other line while watching Netflix? This is where signal blockers come into play. With a signal blocker, you can watch whatever movie or TV show you want, knowing that your neighbour won’t be able to listen in.
There are even situations where signal blockers can prevent your neighbour from hearing you, even if he’s right next door! Signal blockers can interfere with each other in a few different ways. For example, if you’re sitting across from your neighbour and talking on the phone, his call will likely go through regardless. But if you’re both wearing headphones and playing audio at the same volume, you can easily drown out the conversation.
Another way that signal blockers can interfere with each other is by creating interference within the network. Most people assume that signal blockers only affect the transmission of wireless signals but can also cause interference within the electrical grid. This is why you should put them away during thunderstorms. As lightning strikes nearby, high-frequency current passes through wires, generating noise that can interfere with the signal from your cell phone tower.
So, a signal blocker can make it hard for your neighbour to hear you while working, but it probably won’t stop him from seeing you. What about conversations? Can signal blockers interrupt your conversation?
Do Signal Jammers Work?
Yes. They work. Most signal blockers available to consumers are designed to block cellphones, satellite signals, and Wi-Fi connections. That’s what we called All-in-One signal jammers. But the good news is you can turn them off by removing the antennas blocking the channel that’s not your target.
Should You Buy A Signal Jammer?
There are plenty of situations where a signal jammer would be pretty handy. I’m a huge fan of using my phone as a portable hotspot whenever possible. I often bring a laptop along when I’m out hiking or taking a trip. These days, I carry a tablet too. Since my phone and tablet are always connected to the Internet, it makes sense that I’d want to limit the amount of data I’m consuming when I’m travelling.
Of course, there’s nothing wrong with paying for these products. If you want to keep your conversations private, you should consider a signal blocker. The key is finding the right product for your needs. If you want something to keep your neighbours from streaming videos or listening in on conversations at the following table, then a signal jammer may be perfect.
We’ve already covered several types of signal blockers here on Jammer Master. We’ve talked about the best signal blockers for smartphones, and we’ve discussed the best signal blockers for tablets and laptops. Check out our guide to the best signal blockers for smartphones for more information.