Unlike ordinary antennas found on most wireless devices for laptops,
high-gain wireless antennas offer greater levels of signal strength and
range. However, these devices are expensive. You can build a homemade
wireless antenna from common household items and a few inexpensive
specialty parts from a computer shop. The completed product can be
attached to a USB wireless network dongle or a PCMCIA wireless
networking card with a removable antenna.
Instructions
1. Open one end of the metal food can. Wash the can thoroughly to remove food residue.
2. Measure 2.07-inches up from the closed end of the can with a ruler and
mark the spot with a permanent marker. Use a 5/8th electric drill bit to
drill a hole in the marked location roughly the size of the center of
the connector. Drill four additional holes for the mounting bolts.
3. Trim the 12-gauge copper wire with wire cutters to bring the total
length of the wire and brass tube to 1.21-inches. Solder the copper wire
onto the thin tubular end of the connector.
4. Insert the soldered end of the connector into the can through the large
hole, leaving the female connector portion outside of the can. Secure
the connector with the four nuts and bolts. Insert the heads of the
bolts through the interior of the can and hand-tighten the nuts onto the
bolts from the exterior.
5. Attach the male end of the extension cable onto the mount connector.
Attach the other end to the connector on the wireless router or network
card.
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