GPS35 cable to db25 pinout  
 Requires modified serial interface card 

 db25      gps35     signal

   2       blue      rx1
   3       white     tx1
   7       black     gnd
  11       red       +5
  12       grey      PPS
  23       green     rx2
  25       purple    tx2

 June 2002
 www.wraith.sf.ca.us/ntp