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"Real radios glow in the dark" - Ed Mustoe (referring to tube types)

Today in Science History

New Instrument Set to Boost Semiconductor Research

New Instrument Set to Boost Semiconductor Research - RF Cafe"Researchers have developed a table-top instrument that obtains measurements more normally acquired in national high magnetic field laboratories. The advance means that research into the development of next generation electronic devices employing 2D materials can now be done at most research universities. Dr Darren Graham and a team of researchers from Manchester University's Photon Science Institute collaborated with colleagues from ..."

Triad RF Systems 6.4-7.1 GHz COFDM RF Power Amplifier

Triad RF Systems Intros a 6.4 to 7.1 GHz COFDM RF Power Amplifier - RF CafeTriad RF Systems today introduced the TA1029 PA, designed for broadcast applications requiring linear power for COFDM digital video transmission. It utilizes GaN devices for high efficiency while maintaining 30 dB ACPR with a COFDM video signal. The unit can be operated from a 9-36 VDC supply voltage range. This class AB GaN module is designed for both military and commercial applications. It is capable of supporting any signal type and modulation format, including but not limited to 3-4G ...

Antenova Couplers for TransferJet Close Proximity Wireless

Antenova M2M Shipping Embedded Couplers for New TransferJet Close Proximity Wireless Transfer Technology - RF CafeAntenova, manufacturer of antennas and RF antenna modules for M2M, is shipping its first orders for the TransferJet coupler, Zoma, which the company announced in September 2015, and is collaborating with partner Icoteq to build TransferJet designs for customers worldwide. Antenova provides evaluation boards for customers to test the Zoma coupler with their designs. TransferJet is a close proximity wireless transfer technology that radiates very low power radio waves ...

Head of Sales, RF Power Division Needed by e2v

Head of Sales, RF Power Division, Needed by e2v - RF CafeIn the RF Power Division e2V partners with our customers in a wide variety of markets, all around the world. Over 90% of the world's radiotherapy machines contain our technology, we bring vehicles and boats to a safe stop, protecting people's lives, we stop boats colliding at sea, our technology detects and deceives radar threats, we control the kicker magnet in CERN's large hadron collider, and much much more. Do you want to join us and contribute to our future success? We are looking for a Head of Sales for our USA sales team with experience in managing a small ...

Radios with a "Mystic Hand" and a "Phantom Conductor"

Crosley Model 1316 (in Model 167 Console) Radio Service Data Sheet, December 1936, Radio-Craft - RF CafeIt didn't take much in the early days of radio to capture the curiosity of consumers with buzz phrases like a "Mystic Hand" to keep the radio tuned properly - really just AFC control, and a "Phantom Conductor" circuit that boosted the volume of high level audio (a nonlinear amplifier). Here are 4 more Radio Service Data Sheets from Radio-Craft magazine. Crosley Model 1316 (in Model 167 Console) Radio Service Data Sheet, Westinghouse Model WR 207 & WR 208 5-Tube Dual-Band Superheterodyne Radio Service Data Sheet, RCA Victor "High-Fidelity Electrola," Model R-99 Radio Service Data Sheet

Bendable Smartphones Are Coming

Bendable Smartphones Are Coming - RF Cafe"The world's first bendable smartphone made using graphene, which was first developed in Britain, is set to go on sale. Made by a company in China, the device's graphene-based screen is so flexible that it can be worn as a chunky bracelet. The revolutionary material combines being both extremely thin – one atom - and strong – 200x stronger than steel ..."

Amateur Radio in Engineering Classes: IMS 2016

Integrating Amateur Radio into Engineering Classes is International Microwave Symposium Topic - RF Cafe"Using Amateur Radio to enhance engineering education will be the discussion topic during a May 24 session at the IEEE International Microwave Symposium (IMS), taking place this week in San Francisco. For the fourth consecutive year, the ARRL will be represented at the IMS. This year's theme is, 'Connecting minds, exchanging ideas.' The IEEE Microwave Theory and Techniques Society sponsors the conference and hosts meetings of its various technical committees. Dubbed 'The World Series of RF,' the IMS annually attracts technology and engineering professionals involved in all aspects of microwave theory and practice ..."

No GPS? Listen to VLF Radio Signals to Find Way Home

"The Defense Advanced Research Projects Agency (DARPA) is working now to develop a backup system to be used by service members in the event that access to the Global Positioning System, or GPS, is denied to them by adversaries. The 'Spatial, Temporal and Orientation Information in Contested Environments' project, or STOIC, is meant to provide position navigation and timing in situations where GPS is denied to U.S. forces. 'Our main goal is a backup position navigation and timing system when GPS ..."

India Spectrum Auction to Take Place in July or Later

India Spectrum Auction to Take Place in July or Later - RF Cafe"Ravi Shankar Prasad says with spectrum issues out of the way, auction will happen in two to three months. India's much-discussed upcoming spectrum auction will likely get underway in late July at the earliest judging by comments made by the country's communications minister this week. 'Issues regarding spectrum have been addressed ..."

Electronic Crosswords, May 1961 Electronics World

Electronic Crosswords, May 1961 Electronics World - RF CafeElectronics World magazine often published electronics-themed crossword puzzles. Unlike RF Cafe engineering crosswords that use only technical words and clues, this one does include some unrelated words. A couple clues I was surprised to see pertain to radar; e.g., 32A: Small visible mark on a radar or scope screen, and 44A: Identification Friend or Foe. You'll need to print this out on paper to work it ...

Ruh-Roh: Cellphone Radiation "Likely" Causes Cancer

Cellphone Radiation 'Likely' Causes Cancer -RF Cafe"Report of Partial Findings from the National Toxicology Program Carcinogenesis Studies of Cell Phone Radiofrequency Radiation in Hsd: Sprague Dawley® SD rats (Whole Body Exposures)" 5-19-2016. "CONCLUSIONS: Under the conditions of these 2-year studies, the hyperplastic lesions and glial cell neoplasms of the heart and brain observed in male rats are considered likely the result of whole-body exposures to GSM- or CDMA-modulated RFR. There is higher confidence in the association between RFR exposure and the neoplastic lesions in the heart than in the brain. No biologically significant effects were observed in the brain or heart of female rats regardless of modulation." So, there is good news here per modern day thinking - only males will die from it!

Best Paying Bachelor's Degrees? Engineering, by Far

Best Paying Bachelor's Degrees? Engineering, by Far - RF CafeRob Spiegel, of Design News, recently posted the results of a salary survey conducted by PayScale website that listed the top-paying 15 engineering jobs. Petroleum engineering ranks highest with early career pay at $101k and mid-career pay at $168k. Next up is nuclear engineering with entry at $68k and mid at $121k. Down at #5 is electrical & communications engineer with entry at $65k and mid at $116k. CS follows at $69k and $115k, respectively, which evidently begins higher but ends lower. Electrical and computer engineering is #7 at $67k and $114k. Plain old electrical engineering is $66k and $108k, then mechanical engineering ...

New World Record for Wireless Data Transmission

New World Record for Wireless Data Transmission - RF Cafe"German researchers have set a new world record for wireless data transmission at six gigabits per second. They sent the entire contents of a DVD in less than ten seconds using radio waves. The data traveled from the Uni-Center Cologne to the Fraunhofer Institute for High Frequency Physics and Radar Techniques FHR in the city of Wachtberg, nearly 37 kilometers (23 miles) away. This demonstrates that it is possible to wirelessly transmit large amounts of data across long distances. The technology could be used to improve satellite ..."

LPKF Direct Laser Structuring for mm-Wave Antennas

LPKF Readies Direct Laser Structuring for mm-Wave Antennas - RF Cafe"MID technology (molded interconnect device) represents a solution, allowing electrical structures, such as antennas, to be applied to nearly any surface. HFT uses laser direct structuring in its development work. With LDS, a laser beam structures a three-dimensional part made of an LDS-doped plastic. The laser beam transfers the desired circuit layout onto the substrate while activating the additive at the same time. In a subsequent electro-less metallization ..."

Moore on His Law and More

Moore on His Law and More - RF Cafe"In a video interview from his home in Hawaii, Gordon Moore shared his views on the future of technology including the future of his landmark prediction that has fueled the semiconductor industry since 1965. He also showed at 87 the humble engineer can still laugh at himself. 'It would not surprise me at all if we come to end of scaling in this coming decade, but I'm impressed by engineers who keep overcoming ..."

Nokia, STC Test for LTE-like Performance of Wi-Fi

Nokia and STC Conduct Test of Technology to Bring LTE-like Performance to Wi-Fi - RF Cafe"Nokia and the Saudi Telecom Company (STC) have conducted a test of MulteFire technology, which combines the performance of LTE with the simplicity of Wi Fi deployment in unlicensed spectrum bands such as 5GHz. As data demand continues unabated, mobile operators want to explore more opportunities in other spectrum bands, for example the 5 GHz band ..."

Bud Radio Advertisement

Bud Radio Advertisement, May 1930 Radio-Craft - RF CafeBack in the days when I built a lot of prototype electronic gear, project enclosures were generically referred as a "Bud Box." Lab stock rooms always had a good variety of sizes and configurations of the soft aluminum and sometimes plastic boxes that were easily drilled, punched, filed, and painted to make professional looking equipment. In reality, not all the project boxes were made by Bud industries, but just as everyone knows you're talking about a cola when you say "Coke," it was understood that a "Bud Box" was a chassis for a home-brewed circuit. They are still seen in construction articles of electronics hobby magazines ...

Flaw Puts a Billion Wireless Mice at Risk

Flaw Puts a Billion Wireless Mice at Risk - RF cafe"Wireless mice and keyboards are the perfect accessories for a world in which devices increasingly are shuffling off their connection coils, but those accessories - especially untethered rodents - also can create new threats for those who use them. One such threat is Mousejack. The attack exploits a vulnerability found in 80 percent of wireless mice. With US$15 worth of off-the-shelf hardware and a few lines of simple code, a wireless ..."

Graphene: A Quantum of Current

Graphene: A Quantum of Current - RF Cafe"In 2010 the Nobel Prize in physics was awarded for the discovery of the exceptional material graphene, which consists of a single layer of carbon atoms arranged in a honeycomb lattice. But graphene research did not stop there. New interesting properties of this material are still being found. An international team of researchers has now explained the peculiar behavior of electrons moving through narrow constrictions in a graphene layer. The results have been published in the journal Nature Communications ..."

P1dB Equal Phase Attenuators for Signal Balancing

P1dB Releases Equal Phase Attenuators for Signal Balancing - RF CafeP1dB, an RF and Microwave component supplier, announces a line of RF Signal Balancing Attenuators with equal group delays. The P1AT-SAMF-6G2W series attenuators are a cost effective solution for amplitude balancing parallel signals while maintaining the same group delay. P1dB's SMA attenuators can also be used to introduce an amplitude taper on a phased array antenna without affecting phase. The SMA attenuators operate to 6 GHz and are available from 0 to 10 dB in 1 dB steps ...

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