The two types of cable were obtained in different 

 lengths to provide some degree of diversification in the 

 kind of system that can be put together, depending on the 

 desired use. Variations of cable systems actually used 

 will be covered in the section, "Field Tests. " The specifica- 

 tion sheet for the cable is presented in Appendix C. The 

 measured electrical properties are given in table 1. The 

 cross-talk output of the signal pair when a signal is placed 

 across the calibrate pair was measured and is shown in 

 figure 8. About 1000 feet of cable were used for the cross- 

 talk measurements. 



TABLE 1. ELECTRICAL PROPERTIES OF THE CABLE* 



^Values are the averaged measurements of three 1000-foot 

 cables. Measurements were made with a GR type 1650A 

 Impedance Bridge. 



12 



