In the US the audio source 139.88.27.35 at Lewis Research center. If you find the audio cracking up too much for your liking, please disconnect. This is an experiment and should not be expected to work. European users, please do not use the US audio source as too many streams will put an undue load on the Trans-Atlantic link. These can be used with satellite tracking programs for tracing satellites.
Programs are available from various sites on the Internet.