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The new generation receivers B100 and B230

These receivers will be housed in dewar B admitting (in Nasmyth coordinates) vertically polarized beams. These receivers whose performance is not yet known will be installed primarily to provide a backup for dewar A, but they will be made available to the observer as much as possible. Note that the ``old'' receivers 3MM2 and 230G2 will have to be decommissioned if the receiver cabin is rebuilt this autumn.