  The beam position monitor (BPM) system for Fermilab Switchyard (SY) provides
the position, intensity and integrated intensity of the 53.10348 MHz RF bunched
resonant extracted beam from the Main Injector over 4 seconds of spill. The
total beam intensity varies from 1x10^11 to 1x10^13 protons. The spill is
measured by stripline beam postion monitors and resonant circuit. The BPMs have
an external resonant circuit tuned to 53.10348 MHz.
  The corresponding voltage signal out of the BPM has been estimated to be
between -110 dBm and -80 dBm.
