The International Space Station now has a voice repeater on board. Probably the world’s most expensive amateur radio repeater.
The input (transmit) frequency is 145.990mhz and the output (receive) frequency is 437.800mhz. A CTCSS tone of 67hz is required to wake it up.
To successfully contact the ISS repeater you will need to know where it is. For that you will need this URL; https://spotthestation.nasa.gov/