Proceedings of the Particle Physics and Early Universe Conference (PPEUC). For this paper: postscript PPEUC CMB index 1 Observations.. ... VLA observations at 8.4 GHz of a field within one of the Hubble MDS regions have allowed us to set upper limits on fluctuations in the CMBR on angular scales from down to . ... We interpret it as the Sunyaev--Zel'dovich signal from a high redshift cluster. Interestingly, within about of this decrement, lie two radio-quiet quasars both at . ...