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PKS 2142-758 is a flat spectrum radio quasar which emits few, weak butsignificant gamma-ray flares in the MeV through GeV energy range. The firstflare occured on April 4th, 2010, when the source reached a daily flux of (1.1\pm 0.3) * 10^-6 ph cm^-2 s^-1 (ATEL #2539) in the 100 MeV to 300 GeV range.This flux represented more than an order of magnitude increase over itsquiescent flux. Since the initial flare, this source has been detected in anelevated state within the same energy range from October to November of 2010and another period ranging from July to August of 2011. During the latestflaring period in 2011 a multi wavelength observing campaign was carried outusing the Ceduna radio telescope, the Australian Telescope Compact Array(ATCA), the TANAMI VLBI Array, Swift, the Rapid Eye Mount Telescope (REM), andthe Large Area Telescope (LAT) on board Fermi. These quasi-simultaneous datawere used to construct a broadband SED of this object in its rare active state.We present these observations and the resulting SED and some preliminaryanalysis of the constraints they place on the high energy emission from thisobject.

Multi-wavelength Observations of PKS 2142-758 during an Active Gamma-Ray State