Correction [to "Spectrum deterioration caused by virtual cathodes in the subsynchronous region of a microwave magnetron"]

Summary form only given, as follows. Carlton G. Lehr, author of "Spectrum Deterioration Caused by Virtual Cathodes in the Subsynchronous Region of a Microwave Magnetron," which appeared on pages 180-182 of the April, 1964, issue of these Transactions, has called the following to the attention of the Editor. Mr. Lehr would like to thank R. Vaughn of the General Electric Company, Schnectady, N.Y., for pointing out certain discrepancies in his paper. A consideration of these discrepancies revealed several errors which should be mentioned because they affect the evidence used to establish the relationship given in the text. On page 181, in Figs. 1 and 4, the values of I represented by the heavy lines are only 1/4 those obtained from (5) in the text. In Figs. 2 and 3, the values of I represented by the heavy lines are only 1/8 those obtained from (5) in the text.