We have developed a measurement system with which harmful radio noise can be detected. It was designed to cover 1GHz band width centered at l.5GHz and 22.2GHz (H2O H2O line).The system consists of pyramid horn antennas, receivers, equatorial tracking system, spectrum analyzer, and PC for the control of the servo and data taking. As a test of the system, the site of Taeduk Radio Astronomy Observatory (TRAO) was investigated to see if there is any harmful radio interference. It is found that in 22GHz band there is no significant radio noise, but there are identified and unidentified artificial radio signals in 1-2GHz range. However a simple calculation of radiation power shows that it is week enough not to affect the observations in TRAO.

• 박용선(천문대) | Park Yong-Seon
• 남욱원(천문대) | Nam Uk-Won
• 공경남(천문대) | Gong Gyeong-Nam
• 성현일(천문대) | Seong Hyeon-Il
• 정재훈(천문대) | Jeong Jae-Hun