DSN 64-meter antenna L-band (1668-MHz) microwave system performance overview

In 1985, L-band (1668-MHz) receive-only feed systems were installed on the threeDSN 64-meter antennas to provide tracking support for two non-NASA spacecraft. Thespecifications, design approach, and operational test results are presented in this article.The L-band microwave system met all of its tracking goals and is currently beingupgradedto include a C-band (5000-MHz) uplink.