| Article 
            4.1 | Aerials 
            and Signal Reception | A 
              description of the reception properties of the SBS aerial and why 
              its location is important. | 
         
          | Article 
            4.2 | Socket 
            Data | Users 
              can look at the raw data being sent by the SBS unit by using a Telnet 
              application to listen to port 30003. This article describes the 
              data format being received. | 
         
          | Article 
            4.3 | Aircraft 
            List overview | A 
              further look into hidden aspects of the Aircraft List. | 
         
          | Article 
            4.4 | Avoiding 
            Screen Clutter | Further 
              notes about screen display and how changing colours and font size 
              may make the screen easier to read. | 
         
          | Article 
            4.5 | SBS1 
            v SBS1e Polar Plots | A 
              comparison of reception between the original SBS1 and the new SBS1e. | 
         
          | Article 
            4.6 | Upgrading 
            BaseStation | A 
              guide to upgrading BaseStation from earlier versions. Very important 
              for users who are still running:  
              1.1.0.61 or earlier - Early XML version.1.1.0.64 or earlier - the aborted Vista database version
 1.1.1.110 or earlier - pre Airline logo versions
 | 
         
          | Article 
            4.7 | Aircraft 
            Position Errors | Why 
              some aircraft show incorrect positions. 
           |