Antennas 50 x 10m, bandwidth 4 GHz. The 4 GHz bandwidth is intended to cover the Doppler spread of submillimeter lines from galaxies. They would like to have a sampler with a clock rate as fast as 8 GHz, so as not to have to break the 4 GHz IF into narrower channels. More details of this correlator plan are available here. Jaap Bregman presented the concept of An FXRF digital hybrid correlation spectrometer.
Details are available here.
J. Welch on thermal calibration. Jack Welch is developing a thermal load system for amplitude calibration. This uses a circular aperture in the center of the subreflector, the size of which corresponds to the area that would otherwise be covered by a scatter cone. Behind the subreflector there are thermal loads at 300 K and 400 K using radiating surfaces in the form of the interior of a cone. There will also be a reflector behind the subreflector shaped to act as a scatter cone, that is, to appear like a load at the sky temperature.