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Tektronix 465
Portable 100 MHz dual-trace scope
Tektronix 465 front

Produced from 1972 to 1983






Manuals – Specifications – Links – Pictures
Note: The Tektronix 465M scope has its own page.

The Tektronix 465 is a portable 100 MHz dual-trace oscilloscope with dual time-bases. The 465 was very popular and Tek made them for quite a few years. It is all solid-state except for the CRT. It was introduced in November 1972.

There was no 465A but a 465B (int. 1980) with the same base specs but improved performance. The 475 is a 200 MHz sister model. See also 465M.

The optional DM44 multimeter attaches to the top of the instrument.

Bill Turner worked as a calibration technician for the 465 oscilloscope group.


Bandwidth DC to 100 MHz on CH1 & CH2 for −15°C to +40°C and DC to 85 MHz from +40°C to +55°C
Rise time 3.5 ns for 0°C to +40°C and 4.2 ns from +40°C to +55°C
Input Impedance 1 MΩ ±2% // 20 pF
 Input Voltage max. 500 V DC (250 VDC when DC coupled) + Peak AC or 500 Vp-p AC at < 1 kHz
Trigger Coupling DC, AC, LF Reject, HF Reject
Channel Isolation 100:1 at 25 MHz
Z Axis Input DC to 50 MHz; 5 Vp-p signal causes noticeable modulation at normal intensity
Output Signals CH1 Vertical, A & B +Gate
Calibrator ~1 kHz, 300 mV, square wave
CRT 154-0676-10 tube, P31 phosphor, 18.5 kV acceleration, 8 cm × 10 cm graticule
Line Voltage 110/115/120/220/230/240 VAC ±10%, selected via primary voltage selector and regulating range selector assembly, 48 Hz to 440 Hz
Power Consumption 75 W @ 115 VAC / 60 Hz


The 465 uses tunnel diodes with Tek part number 152-0125-00, which are equivalent to TD3A, and 155-0032-00 chips (their -01 grade) as trigger amplifiers.


Common Problems



465 Mod UC


Custom ICs used in the 465

Page Class Manufacturer Model Part nos Description Designers Used in
155-0032-00 Monolithic integrated circuit Tektronix M55D 155-0032-00 differential amplifier Roy Hayes 335 465 7A12 475 FG504
155-0049-00 Monolithic integrated circuit Tektronix M079G 155-0049-02 sweep control with lockout Bill DeVey 335 464 465 466 475 485 4851 4852 5B31 5B40 5B52 5B42 5B44 7B53A 7B80 7B85 7B87 7B92A 7B90P 7B10 7B15 SC502 7B42N

Custom ICs used in the 465B

Page Class Manufacturer Model Part nos Description Designers Used in
155-0115-00 Hybrid integrated circuit Tektronix 155-0115-00 155-0115-00 vertical amplifier 465B