Cell phone signal

DIY 2G/3G/4G Wireless Cell Phone Signal Booster: Before begin. Where i stay is a rural area., cell phone signal reception is a nightmare. 1 bar or no service, the best i can get is 2 bar. After a long searching for a solution, trial and error. Discover this simple solution without purchased a expe…

Being in a situation that's an emergency could be made worse by also being in an area that doesn't get cell service. But there's a way to make a call on your cell phone even without a signal.

A strong cell phone signal at home isn't just a convenience; it could save your life in an emergency.

The reflector portion of a satellite dish concentrates radio signals into the low-noise block amplifier located in the end of the feed horn. If you have poor reception in your home or at a place you frequent, you can use an old satellite dish to concentrate signals into a cellphone instead of the LNB.

Repurposed Satellite Dish Antenna Captures Wi-Fi and Cell Phone Signals: When I moved from San Antonio back to rural North Carolina, I found myself completely unable to get a wi-fi or cell phone signal where I lived. The only way for me to get a cell signal at all was to drive over a mile in either direction from where I…

Cell phone jamming with portable cell phone jammers. Easily carry your device with you. Several handheld models, professional quality with warranty,small size and light weight,Block 2G 3G 4G 5G ,WiFi,GPS,cell phone signals.

A strong cell phone signal at home isn't just a convenience; it could save your life in an emergency.

Simplest DC to AC inverter circuit using 2 Phase primary 1 phase secondary mini step-up transformer powered by TIP41C NPN transistor. This circuit can step up 4 Volt DC to 400 Volt AC

This is one of the most efficient Joule thief circuit capable of powering up 24 LEDs using a single AA battery at 1.4 volts. The components are very simple and cost less than 2 dollars to make except for the breadboard. 4 x 82uH inductors 2 x 1N4007 Diodes 1 x 5.6KOhms resistors 2 x 10nF ceramic capacitors 1 x Breadboard The maximum voltage for the circuit is around 3 volts to 3.5 volts - anything more than that could fried the transistors. I have yet to test the minimum voltage to power up…

The simple and interesting circuit can be built with just two germanium diodes, 1 LED and a small piece of 10cm wire as an antenna. The circuit is not using any battery and extracts power from the nearby cell phone signals.