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  3. HP 200-ABR

HP 200-ABR Oscillator Tube

200-abr Hp Oscillator Tube Type

( Brand: Hp ), ( Manufacturer Part Number: 200-ABR ), ( Model: HP 200-ABR ), ( Part Type: Tube )

Review HP Oscillator Tube Type

The **HP 200-ABR Oscillator Tube** is a precision-engineered, high-performance vacuum tube designed for demanding applications in radio frequency (RF) signal generation, modulation, and amplification within both military and commercial electronics systems. Part of Hewlett-Packard s (now Agilent Technologies) legacy of rugged, reliable components, this **tetrode oscillator tube** operates in the **UHF and microwave frequency ranges**, making it ideal for use in test equipment, communication systems, and specialized instrumentation where stability, efficiency, and long-term reliability are paramount. Constructed with a **ceramic-to-metal sealed envelope**, the HP 200-ABR ensures hermetic protection against environmental contaminants, extending its operational lifespan even in harsh conditions. Its **indirectly heated cathode** provides consistent electron emission, minimizing drift and ensuring consistent frequency output over extended periods of use. The tube s **tetrode configuration** featuring a control grid, screen grid, and plate allows for precise control of oscillation frequency while maintaining high power output efficiency, making it particularly suited for applications requiring **low noise and high linearity**.

Designed for integration into **HP s 8600 series synthesizers and signal generators**, the HP 200-ABR excels in generating stable, pure sine waves across a broad frequency spectrum, often serving as the core component in **RF oscillators, frequency multipliers, and modulation stages**. Its **high power handling capability** allows it to drive external circuits without significant signal degradation, while its **low microphonic sensitivity** ensures minimal interference from external vibrations or acoustic noise, a critical feature in laboratory and field-deployed systems. The tube s **thermal stability** is further enhanced by its **internal heat dissipation design**, which prevents thermal runaway and maintains performance consistency even under prolonged operation. Whether used in **military radar systems, aerospace telemetry, or high-precision test equipment**, the HP 200-ABR delivers the reliability and performance expected from Hewlett-Packard s engineering excellence, making it a sought-after component for vintage electronics restoration, ham radio enthusiasts, and modern RF engineers seeking a high-quality alternative to solid-state solutions. Its **retroactive compatibility** with modern test setups, combined with its historical significance in the development of RF technology, ensures its continued relevance in both restoration and innovative applications.

### Pros of Buying an HP 200-ABR Oscilloscope Tube

The HP 200-ABR is a high-quality, dual-beam cathode-ray tube (CRT) originally used in Hewlett-Packard oscilloscopes, particularly in models like the HP 1300 series. Here are its key advantages:

1. **Superior Image Clarity and Resolution** The HP 200-ABR features a high-definition phosphor screen with excellent brightness and contrast, making it ideal for precise signal analysis. Its dual-beam capability allows for simultaneous display of two signals, which is useful for comparing waveforms or phase relationships.

2. **Durability and Longevity** As a well-engineered component from a reputable manufacturer, the tube is built to last for decades with proper care. Many original HP oscilloscopes still operate flawlessly after 30 years, and the tube is a major factor in their reliability.

3. **Compatibility with Vintage and Modified Oscilloscopes** If you own or plan to restore an HP 1300-series oscilloscope (or similar models like the HP 1310A, HP 1314A, etc.), this tube is a direct replacement. It also works in aftermarket builds where a high-performance CRT is desired.

4. **Collectible and Niche Market Value** For enthusiasts and collectors, the HP 200-ABR holds value, especially in well-preserved condition. It may appreciate over time, making it a worthwhile investment for those interested in vintage electronics.

5. **Superior to Modern Alternatives in Some Cases** While modern digital oscilloscopes dominate the market, analog scopes with high-quality CRTs like the HP 200-ABR still offer unmatched real-time performance for certain applications, such as high-frequency work or troubleshooting analog circuits.

6. **Lower Power Consumption and Heat Output** Compared to some modern displays, the HP 200-ABR operates efficiently with minimal heat generation, making it safer for long-term use in enclosed environments.

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### Cons of Buying an HP 200-ABR Oscilloscope Tube

While the HP 200-ABR is a superb component, there are several drawbacks to consider:

1. **High Cost** A new or restored HP 200-ABR tube can cost **$500 to $1,500 **, depending on condition and seller. This is significantly more expensive than a modern LCD or LED display module, which can be had for under $100.

2. **Limited Availability** Finding a genuine, high-quality HP 200-ABR in stock can be difficult. Many sellers may offer refurbished or repurposed tubes, which could have hidden flaws. The market is niche, and prices can fluctuate unpredictably.

3. **Maintenance and Sensitivity** CRT tubes require careful handling to avoid damage from static electricity, magnetic fields, or physical shock. The glass envelope is fragile, and improper storage or transport can lead to cracks or phosphor degradation.

4. **Replacement Parts and Expertise Needed** If the tube fails, sourcing a replacement can be challenging. Additionally, repairing or replacing associated components (such as the focus, deflection, or power supply circuits) may require specialized knowledge or professional assistance.

5. **Outdated Technology** The HP 200-ABR is a **vintage analog component**, meaning it lacks modern features like USB connectivity, digital storage, or integration with contemporary software. It is purely an analog display with no built-in measurement automation.

6. **Environmental and Safety Considerations** Older CRTs contain lead and other hazardous materials. Proper disposal or recycling is required, which may not be convenient for all users. Additionally, the high voltage inside the tube poses a risk if not handled correctly.

7. **Limited Use Cases in Modern Workflows** While analog scopes have a cult following, most professional and educational environments now rely on digital oscilloscopes for their versatility, storage capabilities, and ease of use. The HP 200-ABR is best suited for enthusiasts, restorers, or specific analog-focused applications.

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### Conclusion and Recommendation

The **HP 200-ABR is an exceptional tube for those who prioritize analog oscilloscope performance, collectibility, or vintage electronics restoration**. Its unmatched image quality, durability, and historical significance make it a worthwhile investment for enthusiasts and professionals who work primarily with analog systems.

However, **it is not a practical choice for most modern users**. The high cost, limited availability, and maintenance requirements outweigh its benefits for casual users, students, or those who need digital functionality. If your primary goal is **reliable, affordable, and versatile signal analysis**, a modern digital oscilloscope (such as a Rigol, Tektronix, or Keysight model) is the far superior option.

#### **Who Should Buy an HP 200-ABR?**

- **Vintage oscilloscope restorers** who need an authentic replacement tube.

- **Analog electronics enthusiasts** who appreciate the aesthetics and performance of CRT-based scopes.

- **Collectors** looking to preserve or enhance a historical instrument.

- **High-frequency or analog signal troubleshooters** who prefer the real-time responsiveness of analog displays.

#### **Who Should Avoid It?**

- **Budget-conscious buyers** who can find equivalent (or better) performance in digital scopes for a fraction of the cost.

- **Users needing digital storage, connectivity, or automation** features.

- **Those without experience handling high-voltage or delicate glass components**.

- **Modern educators or professionals** who require classroom or lab compatibility with contemporary tools.

### Final Verdict:

If you are **passionate about analog electronics, restoring vintage gear, or seeking the best possible CRT display**, the HP 200-ABR is a **premium purchase worth considering**. For everyone else, **a modern digital oscilloscope remains the far more practical and cost-effective solution**.

Details:

Was calibrated sometime in the 2000and filter cap was replaced. Seems to function well after cleaning switches and pots. Nice vintage HP Oscillator. Power switch is a little slow coming on sometimes and may need replaced.

part #: 200-abr prices

  • $100.00-$155.00

specifications tubesocketvintagego:

  • brand: Hp
  • mpn: 200-abr
  • model: Hp 200-abr
  • part type: Tube

payments tubesocketvintagego:

  • credit card: Visa
  • other
  • wallet: Paypal

seller tubesocketvintagego:

  • city: Bloomington, Indiana
  • rating: 100.0%
  • # reviews: 272

offer tubesocketvintagego:

  • options: Ship-to-home
  • availability: In Stock
  • started: March 11, 2026
  • sold: 0
  • quantity: 1

shipping tubesocketvintagego:

  • type: Calculated
  • service: FedEx Ground / FedEx Home Delivery
  • transit: 2-6 Days
  • class: Standard
  • cost: $24.33
  • carrier: FedEx

returns tubesocketvintagego:

  • policy: No Returns

general tubesocketvintagego:

  • Vintage Audio Video > Vintage Parts Accessories > Vintage Tubes Tube Sockets
  • condition: Used
part type: tube,
category: electronics > vintage audio video > vintage parts accessories > vintage tubes tube sockets, sku: 11026277156689713,
Hp 200-ABR Is Similar To:
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4 offers $100.00–$155.00 USD
  • Used. Offer #1 priced at $155.00 + $35.00 shipping estimate = $190.00* total. Thanks! This unit has just been gone over, new caps and brand new multi section psu cap.+$35.00 shipping
  • Used. Offer #2 priced at $100.00 + $28.86 shipping estimate = $128.86* total. No test equipment used to test is included, just the HP200ABR unit. I noticed the range switch needs cleaning but the levels and freq range does appear to work.+$28.86 shipping
  • For parts or not working. Offer #3 priced at $149.95 + $49.95 shipping estimate = $199.90* total. +$49.95 shipping
  • For parts or not working. Offer #4 priced at $49.75 + $31.00 shipping estimate = $80.75* total. See photos for details and message me with questions. Unit is untested and unsure if its current condition.+$31.00 shipping

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