The ether can cause gravity by having an ether wind blowing in the negative radial direction. We have been compleyely blind to this possibility by always meassuring light speed in a horizontal direction. We can explain the effects of SRT and GRT on atomic clocks by the ether wind instead. We get the correct results with a radial ether wind equal to the escape velocity.
In radial direction we also get a second order effect leading to an increase in 2-way light speed. This decrease can simulate a decrease in space station speed. The Pioneer anomaly can therefore be a measurement error.