glangsto -at- nrao.edu
Green Bank Telescope PF1 450 MHz Receiver Checkout.
Observations are presented below of the RFI in the 385 to 520 MHz
and shows the reduction in RFI as a function of first IF band pass
filter. Plots of intensity versus Sky Frequnecy
are shown for the 240, 80, 40 and 20 MHz
Between 380 and 450 MHz the RFI is relatively weak and consists
mainly of narrow bandwidth "spikes".
Above 450 MHz, the RFI is strong and convers a broader frequency range.