RADIOSHACK 12-1875A Micronta Field Swr Tester Manual Box 21-525B

( Brand: Radioshack ), ( Manufacturer Part Number: 12-1875A ), ( Type: Adapter )

Review RADIOSHACK Micronta Field Strength And Swr Tester Manual Original Box

The Radioshack 12-1875A Micronta Field SWR/Power Tester 21-525B is a versatile and essential tool for any ham radio operator or electronics enthusiast. This compact and portable device is designed to measure the reflection coefficient (S11) of your antenna system, enabling you to optimize the match between your transmitter and antenna for maximum efficiency and minimum power loss.

The tester features a simple and easy-to-use analog interface, with a large, clear meter display that shows both SWR ratio and forward power levels. The SWR ratio measurement range is from 1.1:1 to 5:1, while the power measurement range is from 0 to 30 watts. The built-in calibration function allows for quick and accurate calibration using a known 50 ohm terminated load.

The Radioshack 12-1875A Micronta Field SWR/Power Tester 21-525B is designed for portable use and comes with a sturdy carrying case for protection during transportation. The device is powered by two AA batteries (not included), which provide ample power for extended use. The test lead is detachable and features a BNC connector for easy attachment to your transmitter or antenna.

The tester also includes a manual, 21-525B, which provides detailed instructions on how to use the device and interpret the results. The manual covers topics such as calibration procedures, troubleshooting common issues, and tips for optimizing antenna systems.

In summary, the Radioshack 12-1875A Micronta Field SWR/Power Tester 21-525B is a high-quality and reliable tool for measuring and optimizing the SWR and power levels of your antenna system. Its compact size, easy-to-use interface, and accurate measurements make it an indispensable addition to any ham radio or electronics enthusiast's toolkit.

Radioshack 12-1875A Micronta Field SWR Tester 21-525B: A Comprehensive Analysis

The Radioshack 12-1875A Micronta Field SWR Tester 21-525B is a versatile and essential tool for ham radio operators and hobbyists. This device is designed to measure the Standing Wave Ratio (SWR) and return loss of RF transmissions, ensuring optimal system performance and preventing damage to antennas and transceivers. In this analysis, we will discuss the key features, advantages, and disadvantages of this device.

a. Easy-to-read digital SWR and return loss display

b. Power range: 100 kHz to 1 GHz

c. CW and SSB test modes

d. Automatic calibration

e. BNC and SMA connector options

a. Compact and portable design, making it ideal for field use

b. Automatic calibration ensures accurate and reliable readings

c. Supports both BNC and SMA connectors, catering to a wide range of applications

d. Digital display offers easy-to-read and precise measurements

a. Limited power range compared to some professional testers

b. Manual calibration may be required for some applications

c. Battery-powered, which may not be as convenient for extended use as a mains-powered alternative

The Radioshack 12-1875A Micronta Field SWR Tester 21-525B is a valuable tool for radio enthusiasts and hobbyists. Its compact size, versatile connectors, and easy-to-read digital display make it an excellent choice for measuring SWR and return loss in various applications. Despite its limited power range and manual calibration requirements in some cases, the device's advantages outweigh its disadvantages.

For hobbyists and radio operators seeking an accurate, portable, and affordable SWR tester, the Radioshack 12-1875A Micronta Field SWR Tester 21-525B is a highly recommended option. Its digital display, versatile connectors, and ease of use make it a popular choice among the ham radio community. However, for professionals requiring more advanced features and a wider power range, a more expensive and feature-rich alternative may be necessary.

Details:

It looks unused but I cannot be positive. Delivery confirmation is included. This is micronta Field Strength and SWR Tester 21-525B by Radio Shack In the Original Box. It also includes the instructions.

See all pictures for condition. The box shows some minor wear.

part #: 121875a prices

• $11.99-$45.00

specifications partsvintageaudio:

• brand: Radioshack
• mpn: 12-1875a
• type: Adapter

payments partsvintageaudio:

• wallet: Google-pay
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• credit card: Visa

returns partsvintageaudio:

• policy: No Returns

shipping partsvintageaudio:

• cost: $13.20
• type: Calculated
• class: Standard, Expedited
• transit: 3-7 Days
• service: USPS Ground Advantage, USPS Priority Mail
• carrier: USPS

offer partsvintageaudio:

• options: Ship-to-home
• best offers: True
• availability: In Stock
• quantity: 1
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• started: April 30, 2025

seller partsvintageaudio:

• rating: 99.6%
• city: Mechanicsburg, Pennsylvania
• # reviews: 12109

general partsvintageaudio:

• condition: Used
• Vintage Audio Video > Vintage Parts Accessories > Other Vintage A/V Parts Accs

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