What’s so hard about blocking a cell phone signal completely?
Let’s say you don’t own a cellphone and want to shield your house completely from cell phone signals. Or maybe you have a secure area (such as a hospital, data center, prison, or movie theater) and you want to prevent incoming or outgoing calls. There are many shielding materials you can put on walls and windows. But there is a big problem: cellphones can operate very nicely with only a very small fraction (less than 1 millionth) of a normal signal!
Your shielding materials must provide very high attenuation levels. Typically, 80 to 100 dB attenuation materials are required.
You must control leakage points VERY carefully. Gaps under doors, joints between shield sections, and even pinholes from sewing shielding material can permit these high frequency signals to penetrate. You need to create a “complete” enclosure. Any part that is not shielded is a leakage point.
Even a small pouch can be difficult to make with the proper material. Shielding a whole house or even a whole room is a more difficult challenge… if you want to completely kill the signal.
Bottom line, cell signals are extremely hard to block 100% consistently, we are striving every day to improve the performance of our products.
Aren’t all cell phone signals the same?
Not exactly. There is a wide range of frequencies within bands etc.
How do I know the signal is being blocked?
The most obvious way is that you will not receive calls, texts etc. The most accurate way is to use a Radio Frequency Meter.
Does the pocket prevent GPS tracking?
In a nutshell, yes. There are two typical types of GPS. Assisted and unassisted. The difference between assisted and unassisted GPS is that with unassisted GPS, your phone or tablet receives location data directly from the satellites and computes the location of your phone/device. In Assisted GPS, the device uses cellular base stations to provide faster, more accurate location data in the absence of a clear line of sight between the phone/device and satellites. The Block-it Pocket blocks both of these.
If the Talk-it blocks radiation, how does it receive calls?
The Talk-it has a layer of silver infused material sewn into the back only which provides up to 80db attenuation. Because it is not a complete enclosure like the Block-it Pocket, all signals are received. The sheer silver material is also easy to hear through.
Where are your products made?
Our products are manufactured at one of the last standing sewing manufacturers in Lowell Ma.
At one time Lowell and the Merrimac Valley manufacturing belt was among the largest textile manufacturing hubs in the world!
In recent decades it has become a mere shell of its former mega job and wealth producing might.
At an average of four to eight times the cost of manufacturing our products out of country, we are determined to keep local people working and contributing to our community. Our commitment to quality and community will not waver!
Your shielding materials must provide very high attenuation levels. Typically, 80 to 100 dB attenuation materials are required. Your shielding materials must provide very high attenuation levels. Typically, 80 to 100 dB attenuation materials are required.