In 2011 I posted an easy Space 1999 Eagle transporter paper model. Here is a slightly more detailed model of the same spacecraft by Papertoybox. One noticeable difference between the two models is the top of the newer Eagle model has an actual 3D triangulated frame rather than the boxed-in piece the 2011 model has. The PDF template for the transporter may be downloaded here. The designer has photo instructions available as well. The Space 1999 television show aired for two years from 1975 to 1977.

Other Sci-Fi Spaceships:

Perry Rhodan Discoverer
Fireball XL5
Colonial Viper Mark 1
Reaverized Serenity
Spaceballs Winnebago