Description
Tektronix 7A26 200MHz Dual Trace Amplifier Plug-In For Parts Knob Broken
The Tektronix 7A26 is a 200MHz dual-trace vertical amplifier plug-in module for the Tektronix 7000-series oscilloscope mainframes. It provides two independent input channels with variable VOLTS/DIV sensitivity, position controls, and trigger output — making it one of the most commonly used plug-ins in the 7000 system. This unit is being sold as-is due to a broken VOLT/DIV adjustment knob on one channel (either Channel 1 or Channel 2; the specific channel may not match the photos exactly).
Specifications & What's Included
- Model: Tektronix 7A26
- Type: Dual Trace Vertical Amplifier Plug-In
- Bandwidth: 200 MHz
- Channels: 2 (CH1 and CH2)
- Deflection range: 5 mV/div – 5 V/div
- Input impedance: 1 MΩ / 22 pF
- Front panel: BNC inputs for CH1 and CH2, VOLTS/DIV knobs, POSITION knobs, TRIGGER SOURCE and DISPLAY MODE switches, BW and INVERT controls
- Form factor: Tektronix 7000-series plug-in module
- Known defect: One VOLT/DIV adjustment knob broken (CH1 or CH2)
- Unable to fully test at our facility
- Plug-in module only — no mainframe, cables, or accessories included
Applications
The Tektronix 7000-series plug-in system was one of the most flexible and widely used oscilloscope platforms of the 1970s and 1980s. Mainframes such as the 7904, 7603, 7704A, 7844, and 7623 accept interchangeable plug-in modules, allowing users to configure the instrument for different measurement tasks by swapping amplifier, timebase, and special-purpose plug-ins. The 7A26 was a standard workhorse dual-trace amplifier covering DC to 200 MHz, used in electronics labs, service benches, R&D facilities, and educational settings worldwide. Today, 7000-series mainframes and plug-ins remain in use among vintage electronics enthusiasts, repair technicians, and hobbyists who value the system's modularity and the quality of its analog circuitry. A 7A26 with a broken knob is commonly sought for parts, knob replacement, or repair by those maintaining working 7000-series systems.
This Tektronix 7A26 200MHz Dual Trace Amplifier plug-in is being sold AS-IS for parts or repair. One VOLT/DIV adjustment knob is broken — it may be the Channel 1 or Channel 2 knob, and the specific channel affected may not match the photos exactly. We were unable to fully test this plug-in at our facility. Please review all photos carefully and contact us with any questions before purchasing.
Warranty Information
Additional Information
Brand: |
Tektronix |
Model: |
7A26 |
MPN: |
7A26 |
Type: |
Dual Trace Amplifier Plug-In |
SKU: |
15789 |
Seller Notes: |
Plug-in module only — no mainframe, cables, or accessories included. |
Country/Region of Manufacture: |
United States |
Form Factor: |
Plug-In Module |
Bandwidth: |
200 MHz |
Number of Channels: |
2 |
Compatible With: |
Tektronix 7000-Series Oscilloscope Mainframes |
Compatible With 2: |
Tektronix 7904, 7603, 7704, 7904A, 7844, 7623 |
Input Impedance: |
1 MΩ / 22 pF |
Deflection: |
5 mV/div – 5 V/div |
Known Defect: |
One VOLT/DIV adjustment knob broken (CH1 or CH2) |
Condition Notes: |
Tektronix 7A26 200MHz Dual Trace Amplifier plug-in sold AS-IS for parts or repair. One VOLT/DIV knob is broken (CH1 or CH2 — may not match photos). Not fully tested. Please review photos and contact us with questions. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
