The only even numbered TP that E-12 can downlink is TP 24. I am almost positive that the TPs that E-3 could not downlink were TP 4, 6, 12, 26 and 28. I thought TP #2 was one but it was #12. Curious about TP 12. E-6 has had some failures so perhaps it can't provide signals from TP 12 either...