Thanks for the suggestion. For some reason, the Play Store is saying that CDMA Field Test is not compatible with my Sprint Galaxy Nexus? It will, however, let me load it on my Toshiba Thrive Tablet, so I guess I can locate the .apk and sideload it on my Nexus and give it a shot.
Was not aware of privacy issues with Netmonitor, so thanks for the head's up.