In a message dated 7/30/05 9:22:56 PM, wpileggi at juno.com writes: > Power: 20 watts. > Response: 200-5000 hertz, +/- 1 db. > Turns Ratio: 1 to 1. > Primary and Secondary impedance: 6000 ohms. > Test voltage: 3000 volts. > Sound like TCS modulation transformers. Dennis D. W7QHO Glendale, CA