[amsat-bb] ISS Packet Radio

I've been working on a packet setup for ISS and other satellites. During the most recent pass of ISS, just a few moments ago, I heard a number of stations calling. Receive seems to be working.

What's the appropriate way to contact others via ISS?

I'm using a Kam Plus, are there certain settings I should be using or not using?

I've looked at a number of websites and they seem to differ in the methods used or are discussing APRS.

Thanks,