I got a CXR LARUS STS54500 SYNCHRONIZING TIMING SYSTEM at auction with the following cards: 1. 54591 GPS CLOCK ST3E/LN HLD 2. 54571 O/P T1 3. 54550 IMU 4. 54580 OUTPUT NTS 5. 54560 ALARM The GPS CLOCK board has a Tu60-D120-041 receiver card and a TEMEX 0444/0020 DOC2099 oscillator. I can find no operational info on the net. Would anyone have information or how to get info. Bill Reed --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus