Scientific justification for a GBT 1 cm receiver is made in GBT Memo 137, 'The Case for Equipping the GBT With 26.5-40 GHz Receivers' by D. Frayer and P. Vanden Bout, August, 1995.
An internal proposal for NRAO Research Equipment Funds was produced on March 6, 2000 by a working group chaired by P. Jewell.
Funding for this receiver was approved in February, 2002. Acquisition and fabrication of components is underway.