4'&7%+0)"01+5'

Because your CB is exceptionally quiet, any noise you hear is probably from an external source in your vehicle such as the alternator, another radio or spark plugs.

The transceiver uses an ANL (Automatic Noise Limiter) circuit to reduce noise. However, if possible, try to eliminate noise by finding its source.

You can determine the noise’s source by turning off the engine and operating the CB with your vehicle’s ignition set to ACC. If the noise is reduced, the problem is in your vehicle’s ignition or electrical system.

Here are a few hints to help you reduce or eliminate such noise:

•Make all CB power and antenna wires as short as possible.

•Route the power wires away from the antenna wires.

•Be sure that the chassis ground connection is secure.

•Replace old ignition wires with new, high-voltage, noise suppression wires.

•Install noise suppressors on your spark plugs, or install new spark plugs that have built-in noise suppressors.

•If problems persist, check your alternator/generator and regulator gauges. You can reduce the noise from these sources by using bypass capacitors at the various output voltage points.

Your local RadioShack store has a wide selection of noise suppression accessories.

Reducing Noise

13

Page 12 Page 14
Page 13
Image 13
Radio Shack 21-1706 owner manual +001+5, Reducing Noise
Page 12 Page 14

21-1706 specifications

The Radio Shack 21-1706 is a versatile and compact device that caters to a variety of electronic needs, making it a popular choice among hobbyists, DIY enthusiasts, and professionals. This multifaceted tool combines several functions, allowing users to test, measure, and troubleshoot electrical circuits and components efficiently.

At its core, the Radio Shack 21-1706 serves primarily as a digital multimeter. This functionality permits users to measure voltage, current, and resistance with precision. The device features an easily readable LCD display that provides clear, real-time measurements, thereby enhancing usability even in challenging lighting conditions. The range of measurement capabilities allows users to work on a variety of electronic projects, from basic home repairs to more complex circuit testing.

One of the standout characteristics of the 21-1706 is its ability to perform both AC and DC voltage measurements. This dual capability proves essential in today’s diverse electrical environments where both current types are commonly used. Additionally, the meter’s resistance measurement function is invaluable for diagnosing issues with circuits or assessing the integrity of components.

In terms of design, the Radio Shack 21-1706 is built with user-friendliness in mind. It features a rugged casing that not only protects it from bumps and drops but also ensures longevity for years of reliable use. The well-structured layout of controls makes navigating and selecting different functions straightforward, offering intuitive operation for users of all skill levels.

Another notable feature of the 21-1706 is its continuity tester. This function allows users to quickly check for breaks in circuits, ensuring that connections are intact and operational. In addition, the device is equipped with a diode test function, enabling users to assess the functionality of diodes within electronic circuits.

In conclusion, the Radio Shack 21-1706 stands out as a reliable and practical tool for anyone involved in electronics. Its combination of essential measurement functions, user-friendly design, and robust features make it an invaluable asset for both novice and experienced users. Whether for educational purposes, hobby projects, or professional work, the 21-1706 continues to demonstrate its relevance in the ever-evolving field of electronics.
Top Page Image Contents