TEW4977 Overview
CEPT/T1 TEW4977 & -1 are designed and approved to be used as an Input transformer with the following devices. Crystal CS61534, 61535, 61574, 6158, 61535A, 61574A, 61575, 6158A. Level One LXT 300, 301, 305, 304A,305A Also as an Output transformer for:.