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BELL SYSTEM TECHNICAL JOURNAL 



0.2 0.4 0.6 0.8 I.O t.2 1.4 1.6 1.8 2.0 2.2 2.4 



-^ (minimum) 



Fig. -1 — Curves showing maximum value of frequency ratio without interference from 

 TE 01 (?z + 1) mode (case I of Fig. 3). 



Table I. — Cast II: Maximum Frequency Range Ratio, t\ for TE Uln Mode wlien Limited 

 by Mode Crossings with TE 02m and TE 02{m+I) Modes. 



