Unusual oscillations in receiver: Some portable receivers not enclosed in metal cases may break into oscillation when connected to any RF preamplifier. Try reducing the AA7 gain control and make sure good grounds are on the interconnecting coax cables.

Receiver overloading, heterodynes, images: A preamplifier will intensify any problems with selectivity and image rejection due to poor receiver design.

ACTIVE ANTENNA COMPARISONS

The author of this AA7 instruction manual has conducted extensive side- by-side comparisons of the AA7 with the Heathkit HD-1424 and MFJ Enterprises, Inc. Model 1020A active antennas, both of which have band- switched tunable preamplifiers as well as an understandably higher selling price. If all three units are compared, each using only its on-board whip extended to equal heights, the two tunable units do produce a stronger signal. We would hope so! However, attaching about two more feet of wire to the AA7's whip resulted in it delivering the strongest signal. Similarly, increasing the antenna lengths of the other units resulted in increased signal strength. It becomes a question of how much you wish to pay for the shortest possible indoor antenna! The AA7's competition performs well, but we are sure you will appreciate the AA7's versatility and budget pricing.

THE AA7'S ENCLOSURE: THE FINISHING TOUCH

The Ramsey Electronics custom case, panel and knob kit is optional for the AA7 as it is for all of our standard major PC-board kits. In it’s case, the finished AA7 will be attractive and virtually indestructible, so that the world of radio can be at your fingertips wherever you go. Use of our factory enclosure also enhances the resale value of your AA7.

A FINAL SUGGESTION

A small antenna is most effective whenever it can be outdoors and clear of any surrounding metal building structure. You may wish to use a mix of personal ingenuity and hardware store/junk-box parts to make a simple remote whip that can be quickly mounted on windows, windowsills, balcony rails, or handy points on cars, RVs, etc. We hope you will enjoy your AA7 in a wide variety of listening and monitoring situations.

Kit building is FUN! Ramsey has a wide variety of nifty kits. Ask for our free catalog, where there are plenty more kits ideally suited for you!

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Ramsey Electronics AA7 manual Final Suggestion

AA7 specifications

Ramsey Electronics has long been a name synonymous with quality in the realm of amateur radio equipment and communication technologies. Among its standout products is the Ramsey AA7, a high-performance audio amplifier that encapsulates advanced features and specifications aimed at both hobbyists and professionals in need of superior sound amplification.

One of the main features of the AA7 is its robust power output. Capable of delivering up to 7 watts of audio power per channel, it is an ideal choice for driving speakers across various settings, whether in a home audio system, workshop, or small public address system. This level of power ensures that users can experience clear and impactful sound, with performances that fill the room without distortion.

The AA7 employs Class AB amplifier technology, which strikes a fine balance between high fidelity and efficiency. This design is particularly beneficial as it provides reduced heat generation when compared to Class A amplifiers while still retaining audio quality. The result is a unit that remains cool to the touch during extended use, allowing for reliable and consistent sound performance.

Another key characteristic of the AA7 is its wide frequency response, which spans from bass-heavy lows to crisp highs. This extensive range allows for versatile applications, accommodating a variety of music genres and other audio formats without compromising quality. The built-in tone controls allow users to fine-tune the sound to their liking, offering adjustments for bass, treble, and overall volume to ensure an optimal listening experience.

User-friendly design is also a hallmark of the AA7. Its compact size allows it to fit seamlessly into any audio setup, while the straightforward front panel controls make it accessible even for those unfamiliar with audio equipment. The amplifier supports multiple input sources, making it versatile for connecting a variety of devices such as CD players, smartphones, and other audio sources.

In conclusion, the Ramsey Electronics AA7 stands out as a powerful and efficient audio amplifier that combines superior technology with user-friendly design. Its impressive power output, emphasis on sound quality, and convenient features make it a valuable tool for anyone looking to enhance their audio experience, whether at home or in a more public setting. Whether used by hobbyists or professionals, the AA7 offers a compelling solution for high-quality sound amplification.