GENERAL RADIO 1490-A Decade Inductor 191 150V

( Brand: General Radio ), ( Manufacturer Part Number: 1490-A )

Review GENERAL RADIO Gr 191 150v Max Decade Inductor

The GR191 150V Decade Indctor by Astatic, model number 1490, is a versatile and high-performing inductor designed for use in various radio applications. This component is a crucial part of many radio systems, providing inductance to shape the radio frequency (RF) signals.

The GR191 is a decade inductor, meaning it offers a range of inductance values that can be selected by rotating a dial or a series of taps on the inductor body. The inductor covers a wide range of inductance values, starting from 1.8 H at the lowest tap and increasing in 10x increments up to 1800 H at the highest tap. This level of adjustability makes the GR191 an excellent choice for applications where fine-tuning the RF circuit is crucial.

The inductor is designed to operate at a voltage rating of 150V RMS, ensuring it can handle high power levels in demanding radio environments. The GR191 is constructed using high-quality materials and advanced manufacturing techniques, resulting in a robust and reliable component with excellent RF performance.

The inductor's compact size, measuring approximately 2.1 inches (53.34mm) in length and 1.2 inches (30.48mm) in diameter, makes it suitable for applications where space is limited. Its rugged design also makes it well-suited for use in harsh environments, making it an ideal choice for applications in the fields of broadcasting, military communication, and amateur radio.

The GR191 150V Decade Indctor by Astatic is an essential component for any RF circuit requiring adjustable inductance and high power handling capabilities. Its adjustable inductance values, high voltage rating, compact size, and rugged design make it a versatile and reliable choice for a wide range of radio applications.

A GR-191 150V Decade Indctor, such as the one you mentioned which is a general-purpose inductor used in various applications, particularly in radio technology and electronics, comes with its own set of advantages and disadvantages. Let's explore these in detail:

1. Versatility: The GR-191 150V Decade Indctor is a versatile component that can be used in a wide range of applications. Its decade design allows for easy selection of different inductance values by changing the number of turns on the coil.

2. High Voltage Capability: With a maximum voltage rating of 150V, this inductor can handle high voltage applications, making it suitable for use in radio and other electronic circuits.

3. Compact Size: The small size of the GR-191 inductor makes it easy to integrate into various circuits and systems.

4. Reliability: The inductor is known for its durability and reliability, making it a popular choice for electronic applications.

1. Limited Frequency Range: The GR-191 inductor is not suitable for high-frequency applications due to its large physical size and the limitations of the core material used.

2. Limited Power Handling Capability: While the inductor has a high voltage rating, its power handling capability is limited, making it unsuitable for applications that require large currents.

3. Cost: The GR-191 inductor is relatively more expensive compared to other inductor types due to its high voltage rating and decade design.

The GR-191 150V Decade Indctor offers versatility, high voltage capability, compact size, and reliability, making it an excellent choice for various radio and electronic applications. However, its limited frequency range, power handling capability, and cost may be drawbacks for some users.

If you require an inductor for low to medium power, high voltage applications in the radio or electronics field, the GR-191 150V Decade Indctor is an excellent choice due to its versatility, reliability, and compact size. However, if you require an inductor for high-frequency applications or need to handle large currents, you may want to consider other inductor types with different specifications.

Details:

Good condition, Inside is very clean, Not sure if it works. I have no way to test.

part #: 1490 prices

• $399.50-$499.99

specifications tecalib:

• brand: General Radio
• mpn: 1490-a

offer tecalib:

• started: May 17, 2025
• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 1
• best offers: True

shipping tecalib:

• class: Expedited
• cost: $12.84
• carrier: USPS
• transit: 4-11 Days
• service: USPS Priority Mail
• type: Calculated

general tecalib:

• condition: For parts or not working
• Testers Calibrators > Calibrators > Other Calibrators

returns tecalib:

• policy: No Returns

seller tecalib:

• city: Indianapolis, Indiana
• rating: 100.0%
• # reviews: 132

payments tecalib:

• wallet: Paypal
• credit card: Mastercard
• other

General Radio 1490 Is Similar To:

• 1000-p6 General Radio 1000p6 Genrad (47.2% similar) ...(November 27th, 2017)
• 106-g General Radio Millihenry Standard Inductor (52.9% similar) Probably not much newly-made drift n value happening anymore: its not been calibrated since the year I was born, 1957...(December 3rd, 2018)
• 106k General Radio Li Mpn (43% similar) See pictures. No further testing performed. WW e2 I18 missing thumbs screws at test points...(January 3rd, 2018)
• 107-j General Radio Variable Inductor Tested High Power Model (47% similar) Some scratches on the case. Smooth dial motion...(August 14th, 2018)
• 1164-a General Radio Coherent Decade Frequency Synthesizer (42.9% similar) Sold as is for parts or repair. Comes as shown. Missing parts. Item is too large heavy for USPS, so must ship via ups or FedEx. Used items have a 30-DAY return...(October 22nd, 2018)
• 1401-a General Radio Standard Air (41.4% similar) ...(November 2nd, 2017)
• 1401-b General Radio Gr Standard Air Capacitor (48% similar) ...(June 5th, 2018)
• 1401-c General Radio Gr 500 (46.9% similar) ...(November 22nd, 2017)
• 1401-d General Radio Gr Genrad (47.6% similar) The drawbridge, cables and adapters shown in photos are not included.: 2 shipping dimensions in. The item is in good condition, tested and working. Shipping weight lbs terminal precision air capacitor with very low dissipation factor...(April 15th, 2017)
• 1403-d General Radio Air Capacitor Standard (45.4% similar) ...(March 12th, 2018)
• 1403-g General Radio Gr Standard Air Capacitor Pf (46.6% similar) The drawbridge and cables shown in photo are not included sale. Can also be used with coaxial adapters in a variety of calibration functions. GR874 connectors which are arranged to plug directly into the unknown terminals of gr 1615A capacitance bridge...(October 26th, 2018)