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