The group charged with commissioning the GBT found interference with the 800 MHz receiver in total power mode. The source of this interference was identified to be the thermostats in heaters located in some of the outbuildings on the construction site. These were turned off, and the observations were much more fruitful. Progress on suppressing RFI from equipment that has been measured in the anechoic chamber Interference from the vibration monitors for the receivers was fixed and the monitors are now installed. Several pieces of equipment were measured.
Quantitative reports are on file.
The 70 to 1000 MHz antenna has been received. A gimballed mount and rotator still need to be designed for these. No emissions whatsoever can be detected.