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January 2012 [Feedback] Grateful For Germanium In your December 2012 issue, in the story “Transistors Pick Up Speed With GaAs” on page 50, I noticed a major error. — January 2012 [Feedback] Editor's Note Much thanks and appreciation to Mr. Grace for taking the time to write about this major oversight on our part. — January 2012 [Feedback] Revisit Our 50th Our special 50th Anniversary Issue has gotten a tremendous amount of feedback from industry veterans and neophytes alike. — December 2011 [Feedback] Amending Armstrong I’m in the middle of reading the piece submitted by Geoff Mendenhall, Jay Adrick & Tim Anderson of Harris Corp. (“Broadcasting Harnesses The Digital Age,” 50th Anniversary issue) and was enjoying it, when I came to the part about the inventor of FM modulation, “Howard W. Armstrong.” — December 2011 [Feedback] Editor's Note We owe you both a very shame-faced apology. — December 2011 [Feedback] Correction I would like to offer an apology to one of the contributing writers to Microwaves & RF. — November 2011 [Feedback] International Approval My name is Antonio Fernández, and I write from Almería, Spain. — November 2011 [Feedback] Sidebands Strike Again Although you mention in response to Mr. Austen’s comment (“Sideband Suspicion,” September 2011) that creative thinking should not be abandoned, it seems to me our editors’ value lies in discerning creative correctness and creative falsehoods. — November 2011 [Feedback] Editor’s Note The editors of Microwaves & RF have long tried to provide interesting and technically sound information for our readers. — October 2011 [Feedback] Don't Forget The Little Guy I have been a reader of Microwaves & RF magazine for many years and have enjoyed your technical articles and Product Features, although I would prefer that the stories about products would include more opinion and insight on these products, such as the “feel” of using a new microwave vector network analyzer (VNA), like the millimeter-wave system recently featured in the September issue. — Various Readers September 2011 [Feedback] Sideband Suspicion I was disappointed to see the article “Sidebands Are Not Necessary” (August 2011). This work has been debunked in several places, one of them being a good article on the web by Phil Karn. As the published article makes a rather outrageous claim, “sidebands are not essential for transmission or reception,” it deserves a lot of scrutiny before being published. Please do a better job... — Various Readers September 2011 [Feedback] Editor's Note Thanks for your comments. I do review all the articles that come in here and I have been familiar with Hal Walker’s work over the years, going back to when he was an invited speaker at a conference I ran, The Wireless Symposium & Exhibition. Yes, it is easily to discredit UNB technology, since it goes against the intuitive understanding that most of us grow up with concerning modulation of any kind, and how it occupies spectrum around a... — September 2011 [Feedback] A Good Idea At The Time A long time ago (1978-79 timeframe), I worked at RCA in Burlington, MA as an RF design engineer. I was on a team to develop an 18-GHz frequency extension for a US Army depot automatic test set, known as EQUATE. The senior member of the team, Mr. Edwin Richter (deceased), was a brilliant scientist-type who showed me an original paper he wrote on the subject of analog frequency synthesis using mixing techniques. The paper dealt with... — Various Readers August 2011 [Feedback] Let's Treat Leeson Right Your June issue featured an interesting article by Eoin Carey on the effects of VCO tuning bandwidth on phase noise. The article proposed that the phase noise of two otherwise similar VCOs that were based on the same design approaches and technologies would differ according to their tuning bandwidths. The article based its analysis on the well-known equation for phase noise presented by D.B. Leeson in 1966 (“A simple model of feedback oscillator ... — Various Readers August 2011 [Feedback] Setting The Record Straight In a recent Microwaves & RF newsletter, we noticed that you referred to our company as “Richardson Electronics.” — Various Readers July 2011 [Feedback] Alive And Thriving In a previous issue of Microwaves & RF magazine, an incorrect statement saying Polyfet RF Devices is no longer in business was made. In actuality, nothing can be further from the truth. Polyfet RF Devices is alive and doing well. Polyfet RF Devices has been manufacturing RF power MOSFETs since the company’s inception in 1987. Our company has met many industry milestones since that time. In 1995 we were one of the few companies... — Various Readers June 2011 [Feedback] Transistor Omission TRANSISTOR OMISSION We read your article “Transistors Energize Solid-State Amplifiers” in the April edition of Microwaves & RF with both interest and disbelief, as Integra Technologies isn’t mentioned once—despite having been in business for 14 years and having advertised in your magazine on a number of occasions! Integra Technologies has substantial global sales, is arguably the worldwide leader in high... — Various Readers May 2011 [Feedback] Let's Get History Right LET’S GET HISTORY RIGHT I enjoyed reading your “Microwave Memories” column in the March Microwaves & RF, until I got to the last paragraph describing the near-palm-sized newly released varactor diode circuit. For your information, the “circuit” is not a circuit at all. It is a tray or carrier containing a 10 x 10 array of varactors, each about 0.1 in. in diameter and... — Various Readers April 2011 [Feedback] More Ham Memories, Part 2 Editor’s Note: In last issue’s Feedback section, longtime Microwaves & RF reader Robert R. Kornowski recalled a early encounter with a ham radio operator—one that would have a profound influence on his future engineering career. This month, Kornowski continues his reminiscences. Over the next few years, it was my good fortune to be mentored by local hams in the art of radio technology as an associate member of the Green Bay... — Various Readers March 2011 [Feedback] More Ham Memories Your Editor’s Note in the December 2010 issue of Microwaves & RF Magazine regarding the role that ham (amateur) radio played/ plays in the development and evolution of RF engineering triggered a cascade of memories that I think you might find interesting. Upon finding and somehow fixing a Table- Model Aetna Superhetrodyne Broadcast & Short-Wave Band Radio Receiver in the basement of my home in the early 1950s, I... — Various Readers  prev. page
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