9 Scientific apparatus and instruments, namely radio telescopes, transponders, extra-terrestrial signal receivers; telecommunications apparatus, namely, telecommunications signal transmitters and receivers; radio transmitting and receiving apparatus, namely, signal generating and detection instruments; low noise, high frequency amplifiers for use in the communications, scientific and medical instrumentation fields; computer software for use in identifying, measuring and analyzing radio signals; audio and video recording apparatus, namely, audio and video recorders adapted to record and replay extra-terrestrial signals; photographic equipment and apparatus, namely, cameras and digital image recorders