4 to 5 seconds of silent carrier approx 4 minutes into pass followed by a
shorter burst of 1 to 2 seconds.
2 seconds of silent carrier approx 9 minutes into pass.
Above timing based on Keps which I believe to be wrong.
After predicted LOS a further couple of carrier bursts were heard at approx
+ 2 minutes with a characteristic sound of an intermittent connection.