Sharp R-230KK 800-Watt 4/5-Cubic-Foot Compact Microwave, Black

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The Carousel Sharp Microwave features Auto-Touch controls that are precise and easy to use. Short Cuts are a feature that make melting, softening and warming quick and simple!  This countertop microwave also features digital display (accurate and easy to read) defrost (thaws meats and poultry quickly by weight) and 4 cook options, which ensure perfectly cooked popular foods for 1 or 2 servings. Six reheat options make it especially easy to heat frequently served foods including beverages, pizza, rolls, and muffins. This microwave oven also pops popcorn automatically, for perfect results with all types of microwave popcorn! Minute Plus sets the oven at high with a single touch. Available in Black and White.  Discover the many conveniences of this innovative microwave by Sharp!   Assembly level/degree of difficulty: No Assembly Required.
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Technical Details

- 800-watt compact-size microwave oven with 4/5-cubic-foot capacity
- Defrosts meats and poultry by weight; 15 automatic settings; 4 cooking options; 6 reheat settings
- Short cuts make melting, softening, and warming easy; popcorn setting; Minute Plus
- Auto-touch controls; 4-digit LCD display; interior light; 10-3/4-inch turntable provides even heating
- Measures 18-1/8 by 10-7/8 by 14-1/8 inches; 1-year limited warranty
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 "Great little microwave" 2009-12-05
By M.G.
I got this product about a month ago to replace a Samsung that finally died after years of use and abuse.



So far so good - it's easy to use, does it's job and does it well. I agree with the other reviewer who said it's good with potatoes - I've baked sweet potatoes in it and they cook perfectly!



My only concern is the keypad feels a bit flimsy - not too sure how that will hold up over time, especially if you're heavy-handed about punching in the numbers. Also, the buttons are on the small side which could be an issue for those with bigger hands. But overall, this little microwave is a big value for the price, so for now I'm rating it 5 stars.

 "The Sharp R-230KK 800 Watt Microwave Oven" 2009-11-30
By Jerome C. Levenstein (Coral Gables, Fla.)
I purchased this microwave for my son who is now away from home attending college, because of my past experiences with Sharp's other products, which have always been positive. My son reports that he couldn't be more plesed with this compact oven's performance. I was also quite satisfied with the R-230KK's price, and the speed with which it was shipped, and delivered.

 "BUYER BEWARE - Worked for 11 months then quit" 2009-11-24
By FranVf (Western NC, United States)
I bought this microwave in Jan 2009. It worked fine for 11 months then quit. It gave no notice of any issues, just suddenly developed a sharp buzzing rattle in the engine and stopped heating the food. From the other reviews, this is an issue with this model, so I would not suggest buying it.

 "Perfect for the office!" 2009-11-20
By A.Miller (Los Angeles)
I recently moved into an office and needed a small microwave to reheat my meals and cook popcorn. Needless to say this product suits my needs completely!



Besides doing the standard reheating of my lunch that I bring, it cooks popcorn perfectly with the short cut button (one of BIGGEST pet peeves is the burned popcorn due to inaccurate popcorn settings!)



Conclusion: If you are looking for a great microwave for your dorm room or office, this is a great product, but if you want it for more heavy duty cooking for your home, then I'd probably look for something that's a little bigger and powerful

 "Stopped working after one year" 2009-11-18
By A. Dickson (International Falls, Minnesota United States)
I bought this microwave exactly one year ago. Two days ago it started making this horrible loud sound and does not cook food anymore. I have always taken good care of it, so I can't see any reason for this problem. It was not the most expensive microwave, but it wasn't cheap either! I would expect it last longer than one year!


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Microwave and Wireless Synthesizers: Theory and Design

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Over the past decade, great strides have been made in the technology of microwave oscillators and synthesizers, with digital frequency synthesizers in particular attracting much attention. These synthesizers are now being used in virtually all modern signal generators and radio communication equipment. Until now, however, detailed information about their design has been hard to come by-much of it scattered through journal articles-and most books on the subject have taken a primarily theoretical approach. Enter Microwave and Wireless Synthesizers-the first book to emphasize both practical circuit information from RF to millimeter-wave frequencies and up-to-date theory. Based on course material taught by author Ulrich L. Rohde at George Washington University and recent work done by the author at Compact Software, Inc. and Synergy Microwave Corporation, this volume is a complete revision and update of Rohde's landmark text, Digital PLL Frequency Synthesizers: Theory and Design. While it provides all the necessary theory and formulas, it also offers an in-depth look at the practical side of the phase-lock loop (PLL) in synthesizers-including special loops, loop components, and practical circuits-material that is not available in any other book. Rohde explains loop fundamentals, demonstrates the linear approach to oscillator phase noise, discusses the digital direct synthesizer technique, addresses low noise oscillator design, and provides insight into the role and design of crystal oscillators, mixers, phase/frequency discriminators, wideband high-gain amplifiers, programmable dividers, and loop filters. He goes on to cover conventional multiloop synthesizers and survey existing state-of-the-art microwave synthesizer applications. Extensive appendices review the mathematics of useful functions and various applications, including even the complex nonlinear theory of noise in large signal systems such as mixers and oscillators. Microwave and Wireless Synthesizers allows anyone with a PC running either Windows 3.11 or Windows NT to explore real-world design. It uses programs for the solution of digital phase-lock loop systems, tabulates the results, and shows how Bode diagrams are determined by the computer's graphic capabilities. It also includes examples using commercially available linear and nonlinear CAD programs to provide accurate evaluation and optimization of oscillators and other useful circuits and many practical charts. For companies involved in test and communication equipment, this book reduces design and research costs by providing a large number of proven circuits and expediting the design process. It is also an outstanding senior/graduate level textbook for electrical engineering students and an invaluable resource for practicing engineers, senior engineers, and managers who would like to be able to evaluate new trends and techniques in the field.
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 "Great information, very poorly conveyed" 2003-11-07
By
I agree with earlier reviewers that the book is hard to follow and does not have a coherent line of delivery of the material. Nonetheless, the content is excellent, with many valuable insights and information. My impression is that the author has great expertise in the material but was either rushed or careless in the writing of the book.

 "Inattention to detail" 2001-08-09
By
By page eight of this book I had already found many errors, omissions and notational inconsistencies. Explanations are poor and the writing style sloppy. The book does however cover a wide range of material and has a good bibliography, but my advice would be to check everything you use from this book.

 "Caution..." 2000-05-30
By
I found this book very difficult to follow. There are far too many mathematical derivations, and little explanation about what the equations derived are useful for. It is an extremely specialist book and not really for general reading. A lot of material is presented, but it is poorly described.

 "An excellent reference source for synthesizer design" 1999-10-16
By
I pass along the review by Johann Klier in News from Rohde & Schwarz, Number 159 (1998/III):

The book gives a comprehensive picture of synthesizer technology. It not only deals with the underlying theory but also provides numerous practical examples of circuits, many of them implemented by Rohde & Schwarz. The author explains the fundamentals of phase-locked loops, describes the linear model for calculating oscillator phase noise, looks at the design of low-noise oscillators and deals in detail with further PLL components such as crystal oscillators, mixers, phase detectors, loop filters and programmable frequency dividers. The noise characteristics of these components are treated in great detail.

Other chapters are devoted to multiloop synthesizers, direct digital synthesis, the fractional-N technique and high-performance, hybrid synthesizers. With each chapter there is a comprehensive reference list including patents. The book concludes with an in-depth mathematical treatise that includes the complex theory of noise in mixers and oscillators. Thus it covers practically every aspect of synthesizer technology. All in all the book is an excellent reference source for anyone involved in synthesizer design.

 "Generally good but quality is patchy. Some errors+omissions." 1998-08-23
By
Most of this book is very good but the some sections contain gross errors and omissions. The short section on crystal impedance bridge oscillators refers to 2 diagrams that have been omitted. There is the occasional typesetting error where a group of words are run together. Also some sections suffer from an apparent lack of proof reading in that occasionally the wrong word is used (even though the spelling is correct!). The component labels in some diagrams do not correspond to those used in the text and in some cases the same label is used for two sparate components. Erroneous conclusions about the SSB phase noise floor of a crystal oscillator where the output signal is extracted by running the crystal current through a common base stage. Leeson's equation for the SSB phase noise floor is incorrectly applied to derive an SSB phase noise floor about 10 dB worse than that obtained in practice. Instead of blindly applying this formula a return to first principles to calculate the common base stage output noise and signal currents at frequencies outside the crystal bandwidth allows the SSB phase noise floor to be easily computed. This method also provides good insight into the important contributors to the SSB phase noise floor and how to minimise them.These shortcomings, whilst annoying, don't greatly detract from the overall utility of this book, provided that the reader has some previous experience in the field.


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Passive RF & Microwave Integrated Circuits

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The growth in RF and wireless/mobile computing devices that operate at microwave frequencies has resulted in explosive demand for integrated circuits capable of operating at such frequencies in order to accomplish functions like frequency division, phase shifting, attenuation, and isolators and circulators for antennas. This book is an introduction to such ICs, combining theory and practical applications of those devices. In addition to this combined theory and application approach, the author discusses the critical importance of differing fabrication materials on the performance of ICs at different frequencies. This is an area often overlooked when choosing ICs for RF and microwave applications, yet it can be a crucial factor in how an IC performs in a given application.

Gives reader a solid background in an increasingly important area of circuit design

Emphasis on combination of theoretical discussions with practical application examples

In-depth discussion of critical, but often overlooked topic of different fabrication material performances at varying frequencies
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 "Excellent" 2004-10-08
By sam
This is a very good RF & Microwave engineering book.

It combines a clear explanation of the basics with a

series of new different kinds of devices (in chapters

4, 7-13). This makes this book equally useful for

students and for experienced engineers.

This book also integrates the basic analysis of wide

range of passive devices (reciprocal and

nonreciprocal) with essential reference information in

the main text and in the Appendixes. In addition, a

series of important real applications with practical

details are included.

I do give these book 5 stars because it does help you

understand passive RF and microwave devices much better.

 "Excellent Book!" 2004-10-08
By Vladimir Volman
This book treats RF and microwave passive components and control devices and accomplish



the ascention from microwave fundamental transmission lines and simplest elements to move



complicated devices and subassemlies. The most interesting materials are analysis of different



print transmission lines, the distributed and lumped elements of integrated circuits, including novel



termination and planar inductors, analysis and synthesis of print directional couplers, dividers,



combiners, filters. Different modern miniature filters including the novel wiggly coupled lines BPF



and irregular lines LPF are discussed. Also, the diode control devices (switches, attenuators, limiters,



phase shifters) are described in the book. New conceptions of design of isolators and circulators



are considered. Several examples of microwave integrated subassemlies using passive components



and control devices are described. The final chapter represents principal concepts of design and



fabrication technology of RF and microwave integrated circuits.



I do give this book 5 stars because it does help engineers and students understand passive RF and



microwave integrated circuits better. This book is only one of a few books on this topic.

 "Comprehensive Book on Passive RF Devices" 2004-10-07
By K. Kocharyan (REC, Harvard, MA USA)
I strongly recommend this book as it offers thorough, clear and practical guidelines for the development of passive RF and microwave circuits. It starts from consideration of basic types and characteristics of planar transmission lines followed by detailed description of design procedures leading to the realization of passive RF and microwave components and IC's, including ferrite devices. The last Chapter discusses the fabrication aspects of multylayer IC's. Thorough theoretical analysis is supported by numerous practical examples. This book conveniently includes many theoretical expressions and data tables, which are very useful for RF engineers.


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iWavecube IW600SIL 600-Watt Personal Desktop Microwave Oven, Silver

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The iWavecube is the world's smallest microwave yet boasts 600-watt of power. It's so small and light, there's even a handle on it. The patented iWavecube measures 10-1/2-inch wide by 12-inch high by 10-inch deep. By taking up less than one cubic foot of space and weighing only 12-pound, you can put the portable iWavecube anywhere in your home including the family room, or the sacred "Man Cave". It’s extremely quiet. In only a few minutes, the iWavecube zaps popcorn, coffee, soup, and pocket sandwiches. The iWavecube is small and light enough to be called the world’s first personal microwave, which means that you decide when, where, and how you want to use microwave power, which makes the iWavecube the most versatile appliance ever made. If you have a small kitchen or need microwave power on a boat, camper or RV, the iWavecube makes the most of limited space. For yourself, a family member of a BFF, the iWavecube is a great gift anytime of the year.
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- 600-watt personal-size microwave oven weighs only 12 pounds
- Push-button controls with digital display; 0.3-cubic-foot interior; quiet operation
- Settings for all small foods: hot sandwiches, coffee, soup, popcorn, use rack to pop popcorn and sandwiches, large bags will require additional time for popping
- Fold-down carrying handle; ideal for a small kitchen, dorm room, office, boat, or RV
- Measures 10 by 10-1/2 by 12 inches; perfect for the dorm-room or for use in other small space
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 "Samll & Quiet Microwave" 2009-11-30
By sooteal (Colorado)
I ordered this same item from a seller on EBay. It came very promptly. This microwave is good if your use of a microwave is minimal. Great for heating beverages, soup. Only a very small plate will fit in it& there is no rotation tray. Pros--small, stylish, very quiet & light weight. Cons- has a metal rack inside, no glass tray. Controls on top are difficult to see unless you are next to the microwave.


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Sharp Half Pint Microwave Oven

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The Half Pint is compact enough to fit in the sleeper compartment of many heavy-duty trucks. It is only 14-3/8" x 14-1/4" and yet it has a 10-3/4" carousel turntable to accomodate full-size dinner plates.
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Technical Details

- 0.5 cu.ft. / 600 watts
- 2 qt. round
- 8 automatic settings
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 "Sharp R-120D 600 Watts Microwave Oven" 2009-11-11
By Erikka Ray (paterson)
I love this mircowave its wonderful. I had it for 3 or 4 yrs and it just broke


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