Hi, This program allows you to test the Bluetooth communication range between your PDA and your embedded Bluetooth module. To run the test you will need to connect the TX line up to the RX line on your embedded Bluetooth module to setup a Loop-Back path between your PDA and embedded Bluetooth module. Your PDA will transmit a series of characters to your embedded Bluetooth module and these characters will be looped back around to your PDA. Your PDA will verify that the character it has just transmitted is the same as the character that it has just received. This is the "IN RANGE" condition. If the PDA can not verify the characters, then an "OUT OF RANGE" condition. exists. This program allows you to put your embedded Bluetooth module in a fixed position and walk around with your PDA. You will be able to get an idea of how far away you can get before you loose communication with your embedded Bluetooth module. Open air, direct line-of-sight will give you the greatest range. If the signal has to travel through walls, furniture, appliances, etc... the range will probably not be as great as direct line-of-sight. The file "Range1.JPG" is a screenshot of the program. The file "Range2.JPG" is another screenshot of the program. The file "Range.sbp" is the Basic4ppc source code file. The file "Rangezip.zip" is the zipped up ARMV4 (.CAB) installation file.