RAYTHEON 1690-A Rf Phase Shifter Cadpo Engineering Unit Box

( Brand: Raytheon ), ( Manufacturer Part Number: 1690-A ), ( Model: RAYTHEON 1690-A ), ( Unit Type: Unit ), ( Type: Rf Phase Shifter ), ( Country Of Origin: United States )

Review RAYTHEON Rf Phase Shifter Cadpo Engineering Unit Mint Box

The **Raytheon 1690-A RF Phase Shifter CADPO Engineering Unit Box** is a high-performance, precision-engineered component designed for advanced radio frequency (RF) applications within military, aerospace, and defense systems. This ruggedized unit is part of the broader **1690 series** of phase shifters, renowned for their reliability, compact form factor, and exceptional phase control capabilities, making them indispensable in phased array radar, electronic warfare, and satellite communication systems. The **CADPO (Circuit Assembled Directly on Printed Optical) engineering unit box** encapsulates the phase shifter s critical circuitry, providing a sealed, environmentally protected housing that ensures optimal performance under extreme conditions such as temperature fluctuations, humidity, and mechanical stress. Built with **high-purity materials and precision manufacturing techniques**, this unit employs **ferrite-based phase shifters** or **solid-state alternatives**, depending on the specific model variant, to deliver **low insertion loss, wide bandwidth, and precise phase adjustments** with minimal signal degradation. The internal architecture incorporates **low-loss transmission lines, high-isolation switches, and temperature-compensated components** to maintain consistent performance across a broad frequency range, typically spanning **L-band through Ka-band**, depending on the configuration. The **engineering unit box** itself is constructed from **aluminum or composite materials**, offering superior thermal dissipation while resisting corrosion and vibration, ensuring longevity in demanding operational environments. Its **modular design** allows for easy integration into larger RF systems, with standardized mounting interfaces and **coaxial or waveguide connections** tailored to the application s requirements. Whether deployed in **phased array radar systems for air defense, satellite communication networks, or electronic countermeasures platforms**, the **1690-A CADPO unit box** exemplifies Raytheon s commitment to engineering solutions that balance **performance, durability, and adaptability**, making it a cornerstone component in next-generation RF technology.

### **Pros and Cons of buying a Raytheon 1690-A RF Phase Shifter (CADPO Engineering Unit Box)**

1. **High Performance and Precision** The 1690-A is a well-regarded RF phase shifter known for its accuracy and reliability in phase control applications. It is designed for use in advanced radar, communication systems, and test equipment where precise phase adjustments are critical.

2. **Compatibility with CADPO Systems** If you are working with CADPO (Controlled Attenuation Phase Offset) systems, this unit is specifically engineered to integrate seamlessly, ensuring optimal performance in phase-sensitive applications.

3. **Durability and Build Quality** Raytheon (now part of Northrop Grumman) is a reputable manufacturer in defense and aerospace electronics, suggesting that this unit is built to withstand harsh environments and prolonged use.

4. **Wide Frequency Range** The 1690-A is capable of handling a broad range of RF frequencies, making it versatile for various applications, including military radar systems, satellite communications, and test-and-measurement setups.

5. **Modular and Repairable** As a CADPO unit, it may be designed with modular components, allowing for easier maintenance and potential upgrades over time.

6. **Proven Track Record** Raytheon s legacy in RF and microwave technology means this unit has likely undergone rigorous testing and validation, reducing the risk of early failure.

7. **Compatibility with Legacy Systems** If you are maintaining or upgrading older RF systems, this unit may serve as a reliable drop-in replacement for similar phase shifters.

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1. **High Cost** Military-grade and specialized RF components like the 1690-A are typically expensive. The price may be prohibitive for non-defense or commercial applications where budget constraints are a factor.

2. **Limited Commercial Availability** Due to its military and defense origins, sourcing spare parts or finding authorized sellers can be challenging. You may need to rely on specialized distributors or Raytheon s supply chain.

3. **Complexity in Operation** RF phase shifters, especially those designed for high-precision applications, require technical expertise to set up, calibrate, and maintain. Improper handling could lead to performance degradation or damage.

4. **Potential for Obsolescence** Older military-spec units may become obsolete over time as newer technologies emerge. This could limit long-term support and compatibility with modern systems.

5. **Weight and Size** RF phase shifters, particularly those built for rugged environments, can be bulky and heavy. This may pose logistical challenges in portable or space-constrained applications.

6. **Licensing and Export Restrictions** As a defense-related component, this unit may be subject to export controls, ITAR (International Traffic in Arms Regulations), or other regulatory restrictions, complicating international purchases.

7. **Maintenance and Training Requirements** Operating and maintaining a high-end RF phase shifter may require specialized training, increasing operational costs if in-house expertise is lacking.

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The **Raytheon 1690-A RF Phase Shifter (CADPO Engineering Unit Box)** is a high-performance, precision instrument ideal for military, aerospace, or advanced RF applications where reliability and accuracy are paramount. Its strengths lie in its compatibility with CADPO systems, durability, and broad frequency range. However, its high cost, limited commercial availability, and complexity make it less suitable for budget-conscious or non-specialized users. Additionally, potential obsolescence and regulatory hurdles further complicate its acquisition and use.

- **Buy if:** You are working on a **military, defense, or high-end RF project** where precision and reliability are critical, and you have access to the necessary technical expertise and budget. It is also a good choice if you need a **drop-in replacement for an existing CADPO system** or require long-term stability in a controlled environment.

- **Avoid if:** You are operating on a **tight budget**, working in a **commercial or consumer-grade application**, or lack the technical resources to properly install, calibrate, and maintain the unit. In such cases, consider **commercial-grade alternatives** (e.g., Mini-Circuits, Marki Microwave, or Keysight Technologies phase shifters) that offer similar functionality at a lower cost and with greater accessibility.

- **Alternatives to Consider:** If the 1690-A is too expensive or difficult to source, explore **commercial RF phase shifters** with similar specifications but broader availability, such as:

- **Mini-Circuits ZASWA series** (for lower power applications)

- **Marki Microwave PhaseShifter-100** (for higher power, programmable options)

- **Keysight N5242A** (for test-and-measurement setups)

Ultimately, the decision depends on your **specific application, budget, and long-term needs**. If the 1690-A aligns with your project requirements and support infrastructure, it remains a robust choice. Otherwise, a more accessible commercial alternative may be preferable.

Details:

Laboratory calibration setups. Offered here is a vintage Raytheon model 1690-A RF Phase Shifter, originating from Raytheon CADPO Engineering/Advanced Development division. Model: 1690-A confirmed on original box. Includes: Original box with labeling.

Why This Unit Stands Out: Raytheon CADPO instruments were not mass-market items they produced for internal engineering, defense, and advanced development work. Pieces like this are increasingly hard to find, especially in condition with original packaging. Function: Precision RF / Microwave Phase Shifter. Condition: MINT exceptionally clean, appears lightly used or unused.

Key Features Details: Manufacturer: Raytheon. Condition Notes: Unit is in outstanding cosmetic condition with clean surfaces, clear markings, and smooth control movement. This unit has not been recently tested, but presents as a well-preserved example from controlled environment. This unit is in exceptional MINT condition and includes its original factory box, which clearly identifies the model notes No Calibration required.

Calibration: Marked No Calibration required. Microwave/RF signal testing. Antenna array phase control. Key Features Details Original box is included and shows expected light storage wear.

Connectors: Coaxial RF input/output see photos for type. Division: CADPO Engineering / Advanced Development. These instruments were designed for stable, long-term accuracy in demanding RF environments. Adjustment: Large calibrated dial for fine phase control.

part #: 1690 price

• $395.95

specifications automationjack:

• brand: Raytheon
• mpn: 1690-a
• model: Raytheon 1690-a
• unit type: Unit
• type: Rf Phase Shifter
• country of origin: United States

shipping automationjack:

• transit: 5-12 Days
• cost: $22.35
• type: Calculated
• carrier: USPS, UPS
• class: Expedited, One-day
• service: USPS Priority Mail, UPS 2nd Day Air, UPS Next Day Air Saver, UPS Next Day Air

offer automationjack:

• quantity: 1
• options: Ship-to-home
• availability: In Stock
• started: April 4, 2026
• sold: 0
• best offers: True

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• other
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• credit card: Diners-club

seller automationjack:

• # reviews: 1949
• rating: 99.4%
• city: North Providence, Rhode Island

general automationjack:

• Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment
• condition: Used

returns automationjack:

• paid by: Buyer
• method: Money back
• time: 30 Days
• policy: Returns Accepted