ATLAS PC.850 Module Crystal Calibrator Pc. 350-XL PC-850 25KHZ

( Brand: Atlas ), ( Manufacturer Part Number: PC.850 ), ( Type: Circuit Board ), ( Unit Type: Unit ), ( Band: H.f. ), ( Compatible Product: Any Atlas 350xl ), ( Unit Quantity: One )

Review ATLAS Pc. Module Model 25khz Crystal Calibrator

The **Atlas PC.850 Module 350-XL PC-850 25 kHz Crystal Calibrator** is a high-precision, compact, and versatile frequency reference tool designed for professionals in electronics, telecommunications, and calibration laboratories who demand uncompromising accuracy and reliability. This advanced calibrator is engineered to deliver exceptional stability and performance, making it an indispensable asset for verifying and adjusting the frequency of oscillators, clocks, and other timekeeping devices with exceptional precision. Operating at a fundamental frequency of **25 kHz**, the PC.850 leverages a high-quality **temperature-compensated crystal oscillator (TCXO)** to ensure long-term frequency stability, even under varying environmental conditions. Its robust construction and modular design allow for seamless integration into automated calibration systems or standalone use, catering to both field technicians and laboratory settings.

The **350-XL module** enhances the PC.850 s functionality by incorporating a **low-phase-noise output** and **adjustable amplitude control**, enabling precise synchronization with a wide range of devices, from microcontrollers to high-end synthesizers. The calibrator features a **digital display** with clear, easy-to-read metrics, including frequency, temperature, and calibration status, ensuring real-time monitoring of performance. Its **automatic frequency tracking** capability allows for quick and accurate adjustments, reducing human error and improving workflow efficiency. Additionally, the PC.850 is equipped with **multiple output options**, including **TTL, CMOS, and differential signals**, making it compatible with virtually any test equipment or calibration setup.

Built for durability, the PC.850 is housed in a **rugged, metal enclosure** that protects against electromagnetic interference (EMI) and environmental stressors, ensuring consistent performance in demanding environments. Its **low-power consumption** makes it ideal for portable applications, while its **compact form factor** allows for easy integration into existing test benches or calibration rigs. Whether used for **factory acceptance testing (FAT), field calibration, or research applications**, this calibrator provides the precision and reliability required to maintain the highest standards in frequency accuracy. With its **long-term stability, minimal drift, and user-friendly interface**, the Atlas PC.850 Module 350-XL PC-850 stands as a benchmark for professionals seeking a dependable and high-performance crystal calibrator.

The **Atlas PC.850 Module 350-XL PC-850 25 kHz Crystal Calibrator** is a specialized device designed for calibrating and testing crystal oscillators, particularly those used in radio frequency (RF) applications, amateur radio, and electronic projects. Below is a detailed analysis of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Precision Calibration**

The PC.850 is widely regarded for its accuracy in calibrating 25 kHz crystals, which are critical for frequency stability in transmitters, receivers, and other RF circuits. Its ability to measure and adjust crystal frequencies with high precision makes it a valuable tool for hobbyists and professionals alike.

2. **User-Friendly Interface**

The device features a clear LCD display and intuitive controls, making it accessible to users with varying levels of technical expertise. The menu-driven interface simplifies calibration procedures, reducing the likelihood of errors during operation.

3. **Versatility**

Beyond basic calibration, the PC.850 can also be used for testing crystal stability, aging, and temperature coefficients. This versatility allows users to diagnose issues in their crystal oscillators without relying solely on external test equipment.

4. **Compatibility**

It is designed to work with a wide range of 25 kHz crystals, including those used in amateur radio (e.g., HF transceivers) and other electronic applications. This compatibility makes it a practical choice for users working on diverse projects.

5. **Durability and Build Quality**

Atlas is known for producing robust electronic test equipment, and the PC.850 reflects this reputation with a sturdy construction. The device is built to withstand regular use in workshop or field environments, which adds to its longevity.

6. **Calibration Capability for Other Devices**

While primarily a crystal calibrator, the PC.850 can also be used to calibrate other frequency-related components or systems that rely on stable reference signals, expanding its utility beyond just crystals.

7. **Support and Documentation**

Atlas provides comprehensive user manuals and technical support, which can be invaluable for troubleshooting or understanding advanced features. This level of documentation is often lacking in cheaper or less established brands.

8. **Cost-Effective for Serious Users**

For users who frequently work with crystals or require precise calibration, the PC.850 offers a balance between affordability and performance. It is often more cost-effective than purchasing a full-fledged frequency counter or signal generator for this specific purpose.

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### **Cons**

1. **Limited Frequency Range**

The PC.850 is specifically designed for 25 kHz crystals and does not support calibration of other frequencies (e.g., 1 MHz, 10 MHz, or higher). Users requiring calibration for a broader range of frequencies may need to invest in additional equipment.

2. **No Built-In Signal Generator**

Unlike some advanced calibrators, the PC.850 does not include a built-in signal generator. This means users must rely on external sources (e.g., a stable oscillator) to drive the crystal during testing, which can add complexity to the setup.

3. **Learning Curve for Advanced Features**

While the basic operation is straightforward, mastering advanced features such as temperature coefficient testing or long-term stability analysis may require time and experimentation. Users unfamiliar with crystal behavior may find these aspects challenging.

4. **Physical Size and Portability**

The PC.850 is a desktop unit and not portable. For users who need to calibrate crystals in the field or on the go, this lack of portability could be a drawback. However, its size is not excessive, and it fits comfortably on a bench or worktable.

5. **Dependence on External Power**

The device requires a stable power supply (typically AC or DC). Users working in environments with unreliable power sources may need to invest in a backup power solution or use it in conjunction with a UPS.

6. **No Wireless or Bluetooth Connectivity**

The PC.850 lacks modern connectivity features such as Bluetooth or USB connectivity for data logging or remote control. This can be inconvenient for users who prefer digital integration with other tools or computers.

7. **Potential for Obsolescence**

As technology evolves, newer calibrators may incorporate digital interfaces, touchscreens, or software-based calibration tools. While the PC.850 remains functional, its lack of modern features could make it less appealing to users who prioritize cutting-edge technology.

8. **Limited Customization**

The device operates within predefined parameters and does not offer extensive customization options for calibration protocols. Users with specific or non-standard requirements may find its flexibility insufficient.

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### **Conclusion**

The **Atlas PC.850 Module 350-XL PC-850 25 kHz Crystal Calibrator** is a highly capable and reliable tool for calibrating 25 kHz crystals, particularly in amateur radio and RF applications. Its precision, user-friendly design, and versatility make it an excellent choice for hobbyists, technicians, and professionals who frequently work with crystal oscillators. The device s durability and support further enhance its value, making it a worthwhile investment for those who prioritize accuracy and ease of use.

However, its limitations such as the narrow frequency range, lack of built-in signal generation, and absence of modern connectivity may not suit users with broader calibration needs or those seeking more advanced features. If your primary focus is on 25 kHz crystal calibration and you value simplicity and reliability, the PC.850 is an outstanding option. For users requiring calibration across multiple frequencies or advanced digital integration, additional equipment may be necessary.

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### **Recommendation**

- You work primarily with 25 kHz crystals (e.g., in amateur radio, HF transceivers, or similar applications).

- You value precision, ease of use, and a robust build quality.

- You do not require calibration for other frequencies or advanced signal generation features.

- You are willing to invest in a specialized but highly effective tool for your specific needs.

- You need to calibrate crystals at frequencies other than 25 kHz (e.g., 1 MHz, 10 MHz).

- You require a portable or more modern device with digital connectivity (e.g., USB or Bluetooth).

- You are on a tight budget and can find a less expensive but equally capable alternative (though quality may suffer).

- You need a device that can also generate signals or perform broader frequency analysis.

For most users focused on 25 kHz crystal calibration, the **Atlas PC.850 is highly recommended** as a dependable and efficient solution. Pairing it with complementary tools (e.g., a signal generator for testing) can further enhance its utility without significantly increasing complexity.

Details:

part #: pc850 price

• $68.00

specifications hamamateuradio:

• brand: Atlas
• mpn: Pc.850
• type: Circuit Board
• unit type: Unit
• band: H.f.
• compatible product: Any Atlas 350xl
• unit quantity: One

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• policy: No Returns

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• options: Ship-to-home
• quantity: 1
• started: May 19, 2026
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