>>I have managed to transmit data down a wire between the units. >>However, I am struggling to do it via the RF link. When the RF unit is I did a "telemetry" unit by having a serial port, without the RF. I used 24FC65 EEPROMs to store the data (192K total) which works out as 4 minutes of data at 30 samples/sec. If you really don't need the data in real time, it works great. Andy ================================================================== Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA ==================================================================