Want to build a ISS model?
Fine, all you need is a few paper sheets and a pc printer.
The Microgravity Advanced Research and Support Center (an Italian Space Agency contractor) publishes a set of professionally drawn origami sheets wich allow you to build detailed paper reproductions of ISS, Shuttle, Soyuz and other orbiters.
You wont believe how accurate these models are... check it out!

Frank Bauer, KA3HDO: Regarding the packet frequencies and why we use split, I think many have already provided some answers to this. 145.80 is designated a human spaceflight downlink frequency. Right now it shares use on voice and packet for general operations and school group operations. In the future, we expect.....