Tektronix 465 Dual-Channel Analog Oscilloscope 100MHz Portable Benchtop

Tektronix 465 Dual-Channel Analog Oscilloscope 100MHz Portable Benchtop

The Tektronix 465 is a 100 MHz dual-channel portable analog oscilloscope, one of the most widely used bench scopes in electronics history. It features two independent vertical channels, a delayed-sweep time base, and a front-panel calibrator output — all in a compact portable housing with a carry handle. The 465 uses a bright analog CRT with an illuminated graticule and provides direct-reading analog waveform display without the latency or aliasing of digital acquisition.

Specifications & What's Included

• Manufacturer: Tektronix — Beaverton, Oregon, USA
• Model: 465
• Bandwidth: 100 MHz
• Channels: 2 (CH1 and CH2)
• Vertical sensitivity: 2 mV/div to 5 V/div (VOLTS/DIV with VAR fine adjust)
• Input impedance: 1 MΩ / 20 pF per channel
• Vertical modes: CH1, CH2, ALT, CHOP, ADD
• Time base: A sweep (TIME/DIV) with B delayed-sweep capability
• Trigger: A and B trigger sections — Auto, Norm, Single; sources: CH1, CH2, Line, Ext
• Display: Analog CRT with backlit graticule; INTENSITY, FOCUS, SCALE ILLUM, TRACE ROTATION controls
• Front-panel CALIBRATOR output
• Rear BNC outputs: A+GATE (500Ω, 5.5V), B+GATE (500Ω, 5.5V)
• Rear BNC: CH1 VERT SIGNAL OUT — 50Ω, ~50mV/div
• Rear BNC: EXT Z AXIS 24kΩ input (positive going input decreases intensity)
• Power: 115V/230V AC selectable, 50–60Hz, 75W max, 1A max
• Fuse: 1.5A Fast at 115V / 0.75A Fast at 230V
• Form factor: Portable benchtop with integrated carry handle
• CSA certified electronic instrument
• Includes: AC power cord
• Not included: Probes

Applications

The Tektronix 465 was introduced in 1972 and became one of the best-selling oscilloscopes of its era — a mainstay on electronics workbenches in research labs, universities, military depots, and service shops throughout the 1970s and 1980s. Its combination of 100 MHz bandwidth, compact portable form, and dual-channel delayed sweep made it a benchmark instrument for its time. The 465 is still actively used today by electronics technicians, hobbyists, ham radio operators, and vintage-equipment enthusiasts who prefer analog oscilloscopes for their real-time continuous waveform display and the absence of digital sampling artifacts. It is well-suited for audio amplifier troubleshooting, analog circuit development, RF signal tracing at lower frequencies, and general-purpose two-channel waveform analysis. A large base of users and a robust repair community mean that replacement parts and service documentation remain widely available. The 465 accepts standard 10X passive probes with BNC connectors and is compatible with a wide range of Tektronix accessories from the same period.