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Step 4Optional--add an external antenna to the TelosB
The TelosB will be able to collect signals using its default printed circuit antenna even inside the closed suitcase, but the range is limited to less than 100 feet, maybe even 30 feet. So you might add an external SMA antenna connector (see shopping list).
To use an external antenna, you have to move a small capacitor on the TelosB board. The second image shows an unmodified board and the third image shows the moved capacitor. It can be done using a regular soldering iron and heating up both sides of the capacitor, then grabbing it with tweezers. It's easier to do using a hot air tool.
Then solder a SMA connector to the five-pin through hole footprint. A 4-inch, 2.4 GHz antenna can be put directly there or connected by a flexible cable.
To use an external antenna, you have to move a small capacitor on the TelosB board. The second image shows an unmodified board and the third image shows the moved capacitor. It can be done using a regular soldering iron and heating up both sides of the capacitor, then grabbing it with tweezers. It's easier to do using a hot air tool.
Then solder a SMA connector to the five-pin through hole footprint. A 4-inch, 2.4 GHz antenna can be put directly there or connected by a flexible cable.
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