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Today's Degradation was the highest during the DXpedition. This was partially responsible for the fact that only 10 new stations were contacted today, bringing the total so far to 92.
The other issue appears to be the high TEC which forms after daylight hours over this area. An overview of this phenomenon is graphically shown here: https://www.sws.bom.gov.au/HF_Systems/6/5 I had initially thought that elevating the antenna and beaming up through this section of the ionosphere would overcome any interference from it. However, today's moon pass provided a much different experience. The many stations who were received here in Temotu Province were unable to receive my signals. Two hours of testing this afternoon with HB9Q demonstrated how consistent his signal was off the moon here but he was unable to receive any signal from me at all at any polarization angle. This suggests a type of truly "one way" propagation on EME that I know I have never run into anywhere I have gone before. Granted, I always tried to time my EME trips to take advantage of night time operation, and I did that for this trip too. However, the first week of the trip, during which the moon was up was all during the night, was spent stranded in Honiara because of two canceled flights to Temotu Province. The result is that there will only be a couple more days with only moonrises during local darkness. We will see if the upcoming daytime operations mirror those experienced today.