I had my workbench down for about a year with all my equipment boxed up for renovation. Yesterday, I tried to bring up my two Lucent RFTGm-II-XO along with my T-Bolt (version from the last group buy). Initially, for comparisons, they all shared the same antenna (Ace Technologies, GA-1575) through an HP 58516A distribution amp splitter. Unfortunately, the antenna is sitting in my 2nd floor attic (conditioned) workroom window facing South (lower NYS area). I tested each Lucent separately but each side by side against the TBolt. I also made sure that it was the Lucent XO supplying the antenna power because as I recalled, it wants to see at least 20mA draw or it faults. Using LH v 6beta, the TBolt as expected took a very short time to find 5 useable satellites. The Lucent XO (either one behaving the same) after several hours, shows the same 6 satellites on Lady Heather as the TBolt, but all are yellow with SNR N/A. Further, the Lucent XO's remain in "Warming up" mode, I assume because no satellites signals are sensed. The same sats have signals on the TBolts ranging from 30-37 dBc. I also tested each Lucent XO individually without the HP distribution splitter and same findings. Does the Lucent XO Oncore UT require a stronger signal than the TBolt's M12T+ ? I may not be able to position the antenna for a full sky outside view for some time. Would an additional GPS amplifier help? Jerry NY2KW