ネタ | Cell phone jammers block some nasty signals道場 | ホビー・ゲーム | まにあ道

Having the option to contact anyone whenever necessary is a valuable asset. Nonetheless, the misuse of cell phones in restaurants, cinemas, music venues, shopping complexes, and places of worship has become a problem, as some users lack the awareness to end their conversations appropriately.Who among us has not felt exasperated by being a part of a conversation about an extremely personal matter, where the speaker shares intimate details with their friend and those in the vicinity?

While the general response to dissatisfaction is often limited to grumbling and moving on, certain individuals take it to the extreme to seek revenge. Cell phones, essentially acting as handheld two-way radios, can be disrupted or jammed, just like any other radio signal.

Through the transmission of a signal on the same frequency and at a sufficiently high power, jamming devices have the ability to overpower cell phones, resulting in the collision and subsequent cancellation of the two signals. To counteract any minor disruptions, cell phones are designed to amplify their power, necessitating the signal jammer to identify and replicate the power increase from the phone.

Mobile phones are considered full-duplex devices, utilizing two separate frequencies for talking and listening at the same time. Some jammers interfere with only one of the frequencies used by cell phones, effectively blocking both frequencies. This causes the phone to be fooled into believing there is no service, as it can only receive one frequency.

Devices with less complexity are designed to block only one group of frequencies, whereas sophisticated wifi jammer can block multiple types of networks simultaneously. This is done to prevent dual-mode or tri-mode phones from automatically switching between different network types in order to find an open signal. Some high-end devices have the capability to block all frequencies at once, while others can be adjusted to target specific frequencies.

A device capable of broadcasting on the correct frequencies is all that is needed to jam a cell phone signal. Despite variations in signal processing methods across different cellular systems, all cell phone networks rely on radio signals that can be disrupted.GSM operates within the 900-MHz and 1800-MHz bands in Europe and Asia for digital cellular and PCS-based systems, while in the United States it operates within the 1900-MHz (sometimes referred to as 1.9-GHz) band.By operating on any frequency, jammers exhibit their effectiveness against a wide array of systems such as AMPS, CDMA, TDMA, GSM, PCS, DCS, iDEN, and Nextel. Both outdated analog cell phones and contemporary digital devices are equally vulnerable to the interference caused by jamming.

I'll give you a serious answer since many others won't. I know from experience that, yes, your neighbor COULD have such a device. They're rather inexpensive. $150 can get someone a cell phone jammer conveniently delivered to their door.

Is it likely though? Anything is possible. You never really know who your neighbors are. I move around a lot & after all the awful neighbors I have had, I put nothing past anyone.

FCC probably won't take your claim seriously without proof. Just repeat the performance a few times & record the results. However, if the guy has a gps jammer it would probably be best not to talk about your test out loud.

Reason being, when someone has a gsm jammer, they usually also have a listening device. No, I am not joking. Every person in this would be paranoid if they knew the number of people who buy listening devices so they can spy on their neighbors for shits & giggles....or worse more malicious reasons.They're easy to acquire & work wonderfully. Don't talk about your plan to test him so you can record it. If he has a jammer, chances are that he's the type to have such a device to listen to you in your home.