I notice the power brick for the Lynx TX/Rx module is rated at 6VDC, which means it probably puts out a bit more, but the voltage on the main rail is regulated by a L7805ABV regulator. The question is, "Can the Lynx TX/RX module run from a USB port power? If I removed the 5V regulator and wired in a USB cable, should everything in the module remain happy?