The antenna inside a cell phone receives the cellular signal so calls can be made. Add an external antenna, or "booster," that will amplify the cellular signal from a 3G cellular network. A few supplies are needed, but no electrical skills. The cell phone will not be physically modified in any way.
- Skill level:
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Things you need
- Fruit juice can, 907gr.
- Can opener
- Plastic container, 907gr.
- Dishwashing liquid
- Paper towel
- Grease pencil
- Utility knife
- Work gloves
- Masking tape
- Cell phone
Stand a fruit juice can on a table. Open the top with a can opener. Pour the contents into a plastic container. Wash the can with dishwashing liquid in the kitchen sink. Dry the can with a paper towel.
Place the can on a table with the open end facing up. Measure the width of the cell phone that will be used. Make a dot on an edge at the top of the can with a grease pencil. Measure across the top of the can with the measurement that was just taken. Make another dot at the end of the measurement.
Cut a vertical line down the side of the can at the two dots with a utility knife; wear work gloves to protect your hands in case the blade slips during the cutting. Cut across the bottom of the can from one end of the vertical line cut to the other.
Pull the cut out piece of metal from the can; a pliers gripping the top of the can may help to bend the bottom back and forth until it breaks loose. Dispose of the cut-out piece of metal in the trash.
Place strips of masking tape against the vertical cuts and bottom cut on the can. Stand the cell phone inside your 3G directional antenna. Rotate the antenna so that the cell phone is facing toward a window or glass door facing the outside (for example, a backyard patio).
Place a call on the cell phone. Press the icon to activate the speakerphone function. Talk and listen to your caller, thanks to the improved cellular signal that the cell phone is now getting from the 3G directional antenna you have made.
Tips and warnings
- Glue a piece of felt to the bottom of the can to protect any surface it is placed on.
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