I am running into a problem with my setup of a nRF24L01+ module. I have a system that has two modules, one that acts as the master and=20 another acting as a slave. The master calculates some data and creates=20 a small message of 6 bytes and broadcasts it once every 5 seconds. The=20 slave listens for a packet and displays the information on an LCD. If I set the data rate to either 1 or 2Mbps the system operates as expected= .. If I set the data rate to 250Kbps the master node OBSERVE_TX register is=20 incremented with each transmission. The slave node appears to be happy=20 in that the data is correctly displayed but the masters "appears" to not=20 be receiving the ACK. Replacing both modules did not have an effect. I would like to operate at 250Kbps since I will be pushing the range=20 limits and the slower data rate will help. By the way I am using the=20 nRF24L01+ with PA and LNA. Has anyone run into this problem before? Is there some other change=20 that I need to make when I operate at the 250Kbps data rate? Thanks -Phil- --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .