The slow dasher near 4103 you are talking about might be one I reported a couple months back, and I have an email from someone claiming to be the owner. This is the same person who tried a few other freqs, including 5711.8, 8000.8, and a couple more I do not remember off the top of my head, I think there was something around 6700 and something around 12000.
If this is the 4103 you are talking about the actual freq is 4102.8, or it has been every time I have checked it. One second dash and one second pause, it is supposedly going to have more later on. Power is less than 100 mW into a wire dipole facing NE/SW. Location is supposed to be just outside the western edge of Death Valley.
This beacon is between the "W" wind beacon on 4102.3 and the nightime only "O" beacon on 4104.18. Here is a shot of all three coming in at my location at once;

T!