Tektronix Type H WIDE-BAND CALIBRATED PREAMP Plug-in Unit, Untested

Vintage Tektronix Type 53/54D Oscilloscope Preamplifier Plug-in Unit

Tektronix Type 86 Plug-In Unit High Gain Fast Rise Calibrated DC Preamp B.26

Tektronix Type 1L5 Spectrum Analyzer Plug-In Unit

Tektronix Type L Plug-In Unit Oscilloscope Vertical Amplifier Module B.75

Tektronix 7S11 Sampling Unit Plug-In Module Vintage Oscilloscope UNTESTED B.2

Tektronix 7704A Oscilliscope Main Frame

Tektronix Type 53B Plug In Unit For Parts Or Repair