7. Ensuring a Good Radio Signal

Here are some tips for improving the quality of the radio signals sent between a pair of Wixels:

• Reduce the distance between the Wixels, if possible.
• Try different frequencies. Most Wixel apps that use the radio have a radio_channel parameter that determines what frequency will be used. By switching to a different channel you might be able to avoid interference from other nearby 2.4 GHz radios. You might even want to buy a spectrum analyzer such as the Wi-Spy to find out which frequencies in your area have the least activity.
• Remove objects that are very close to the Wixel’s antenna. For example, if the Wixel has no header pins installed and it is resting flat on your desk, find a way to get the Wixel at least an inch or two above the desk.
• Reduce obstructions between the two Wixels. Many objects can interfere with 2.4 GHz radio waves, including walls, trees, people and anything with water in it.
• Try different Wixel orientations. The Wixel’s antenna sends and receives better in some directions than others.