ALMA MEMO #470

RFI Survey at the ALMA Site at Chajnantor

Carla M. Beaudet, Galen Watts, Jeff Acree, Simon J. E. Radford
National Radio Astronomy Observatory

2003-07-15

A Radio Frequency Interference survey covering 10 MHz – 18 GHz was conducted at Chajnantor, Chile, the site of the ALMA project, on 2002 December 6 – 9. The survey provides a “snapshot” view of existing RF activity in the area. The detected signals fell into these categories: noise from nearby electronic equipment, broadcast TV and FM radio, and terrestrial and satellite radio services.

View a pdf version of ALMA Memo #470.

****Text Files that comprise the data taken during the RFI survey at Chajnantor in December, 2002 are also available ( allspans.txt and allfreqs.txt).