Wi-Spy v1 is the world's smallest 2.4 GHz spectrum analyzer. It's so small (and inexpensive) because it harnesses the processing power of the computer you already own. Wi-Spy v1 is great for troubleshooting interference from Wi-Fi (802.11 b/g), Microwave Ovens, Cordless Phones and more. Today's wireless landscape is crowded. Wi-Spy will help you find a clear path for your signal if your wi-fi has intermittent bandwidth problems, the microwave interferes with your wi-fi network, when the phone rings your network connection drops.