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Template:Plugin Sidebar 2 The Tektronix Type 75 is a 4 MHz amplifier plug-in for 560-series scopes. It was introduced in 1961.
The sensitivity has 9 calibrated steps from 50 mV/div to 20 V/div. It has a UHF input connector. The input impedance is 1 MΩ in parallel with 47 pF. Starting at serial number 1120, it was renamed the 3A75.