COAXIAL IMPEDANCE STANDARDS 705 



compared to determination of the power factor of the dielectric of the stand- 

 ard which is controlling in determination of G. Table IV shows the effect 

 of these circumstances in the case of the 7.0 ft. length. The error in G' is 

 computed as less than 2% at 1 mc. for 25% error in power factor deter- 

 mination. At 20 mc, G is less than one thousandth of G' and, as indicated 

 in the table, G' has an error of 0.3% due entirely to errors in co^C^R^^ 



Acknowledgement 



The writer is greatly indebted to Mr. M. C. Biskeborn who contributed 

 much valuable advice during the development of the standards. 



