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Homepage Archive - March 2017 (page 2)

These archive pages are provided in order to make it easier for you to find items that you remember seeing on the RF Cafe homepage. Of course probably the easiest way to find anything on the website is to use the "Search RF Cafe" box at the top of every page.

Homepage Archive Pages

2017:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
2016:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
2015:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
2014:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
2013:  Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

See Page 1 | 2 | 3 of the March 2017 homepage archives.

 

Monday 20

International Wireless Communications Expo 2017 - March 27-31

International Wireless Communications Expo 2017 - RF Cafe"It's our 40th anniversary! Taking place March 27-31, 2017 in Las Vegas, IWCE 2017 is a venue where people can make the human connections they need to be successful, whether it is connecting to a future client, boss, employee or business partner. It is also where people can connect to information about a technology, product or policy that is crucial to success. See innovation at its best and join us for the premier event for communications technology ..."

An Introduction to Electromagnetic Compatibility

An Introduction to Electromagnetic Compatibility by API - RF CafeAPI Technologies has published a white paper titled An Introduction to Electromagnetic Compatibility. "By definition, Electromagnetic Compatibility (EMC) describes the ability of a system, a piece of equipment, or some other electrical device that utilizes electromagnetic energy, to operate in its intended environment without suffering an unacceptable degradation in its performance, or negatively impacting the ability of another device to perform its intended function. This paper is ..."

Engineering Specialist 2 Wanted by Harris Space & Intelligence Systems

Engineering Specialist 2 Wanted by Harris Space & Intelligence Systems - RF CafeHarris Space & Intelligence Systems is looking for an Engineering Specialist at its Palm Bay, Florida location to provide technical support to the RF & Microwave Engineering Department and support department labs. Projects/tasks will vary depending on program requirements. Job duties will require skilled workmanship, integration, testing, and ability to follow verbal and written instructions. Complexity of tasks will increase with time in position ...

Beauty and Broadcasting

Beauty and Broadcasting, April 1945, Radio-Craft - RF CafeAM radio station WISE, in Asheville, North Carolina, today is an ESPN sports broadcasting entity, but until 2004 it was a Top 40 type music format. It gained notoriety in World War II for being the first commercial broadcast station whose entire staff of radio engineers was comprised of women. As reported in a 1945 issue of Radio Craft of chief engineer Madeline Halleuth, "...she speaks the language of crystal-controlled frequencies, water-cooled transmitting tubes, condensers, coils, and carries her position with the ease of a veteran radio technician." While America's ...

2-Way Radio on Single Chip w/o Filters Developed

2-Way Radio on Single Chip w/o Filters Developed - RF Cafe"Two-way communication requires, of course, both send and receive capabilities. But putting them in the same device requires a filter between the send and receive circuits to provide signal isolation. Without a high performance filter, communication would be impossible. Researchers in Cornell University's Molnar lab have devised a method for both transmitting and receiving a radio signal using a single chip without the use of a filter. This technology could potentially change the way wireless ..."

Reduced Footprint Wilkinson Power Divider w/EM Verification Using NI AWR

Application Example Describes How to Design a Reduced Footprint Wilkinson Power Divider with EM Verification Using NI AWR Software - RF CafeA new application example describes the steps used to design a microwave Wilkinson power divider using ideal transmission lines, microstrip implementation, physical design, and circuit compaction. The entire project is done in NI AWR Design Environment, specifically Microwave Office circuit design software, from schematic entry to physical printed circuit board (PCB) implementation, ACE™ automatic circuit extraction ...

Swedish Regulator Rejects Entry Level Amateur Radio License

Swedish Regulator Rejects Entry Level Amateur Radio License - RF Cafe"Sweden's telecoms regulator PTS in February rejected the idea of an entry-level Amateur Radio license. According to Sweden's International Amateur Radio Union (IARU) member society SSA, the PTS 'categorically rejected' the proposal, and that SSA must now find new ways to motivate prospective radio amateurs. 'Amateur Radio's future in Sweden is an urgent issue that will be discussed during the upcoming annual meeting on Faro,' SSA said. The SSA estimates that fewer than 100 new licensees are joining the Amateur Radio ranks in Sweden each year ..."

Sunday 19

RF Cafe Engineering Crossword Puzzle with Weekly Headlines

RF Cafe Engineering Crossword Puzzle w/Weekly Headlines March 19, 2017For the sake of avid cruciverbalists amongst us, each week I create a new crossword puzzle that has a theme related to engineering, mathematics, chemistry, physics, and other technical words. Clues in this puzzle with an asterisk (*) are pulled from this past week's (3/13 - 3/17) "High Tech News" column on the RF Cafe homepage (see the Headline Archives page for help) ...

Friday 17

Flann Microwave Celebrates 60 Year of Success

Flann Microwave Celebrates 60 Year of Success - RF CafePioneering microwave engineering company Flann Microwave has celebrated 60 years of success by looking to the future with an investment in a new coordinate measuring machine (CMM) to further enhance the precision manufacturing and testing of its market leading waveguide and calibration technology. With a 60-strong team based in Bodmin, Cornwall, UK, Flann has grown over six decades to secure a global reputation for innovation and the production of precision microwave and millimeter ...

Tech Workers Find Communal Living Solution for High Rents

Tech Workers Find Communal Living Solution for High Rents - RF Cafe"Zander Dejah, 25, pays $1,900 a month rent to live in a downtown San Francisco house with at least 40 other people, many of whom sleep in bunk beds. Dejah is a resident of The Negev, a communal living space that styles itself as a home for millennial tech workers to brainstorm ideas, write code and create apps, even if they have to share toilets and bathrooms with dozens of others. Houses like The Negev, located in a neighborhood known as "SoMa" or South of Market, have cropped up around San Francisco as an influx ..."

The Theory and Construction of Attenuators and Line Filters

The Theory and Construction of Attenuators and Line Filters, August 1932 Radio-Craft - RF CafeThis is the third and final installment of Hy Levy's series on attenuators, line filters, and matching transformers. Audio and low IF frequencies are used in the examples, but the formulas and principles can be extended to higher frequencies. Bifilar windings are covered as a method of minimizing self-inductance in wire-wound resistors. Although inductance is not desired in resistors, bifilar windings can also be connected to have current in both wires flowing in the same ...

RF Test Engineer Needed by United Technologies (UTC)

RF Test Engineer Needed by United Technologies (UTC) - RF CafeUnited Technologies now has openings for two RF Test Engineers. The RF Test Engineer is responsible for all aspects of the test process, including first pass yield, data generation and reporting, and issue identification / resolution. The candidate must have the ability to plan and execute projects to completion on time at required performance levels, including complete and accurate documentation. The role requires a clear understanding of statistical methods/tool utilization for optimization of test platforms. Understanding, applying, and ...

R&S Webinar: Troubleshooting EMI w/Lee Hill, SILENT Solutions

Rohde & Schwarz Webinar: Troubleshooting EMI with Lee Hill, SILENT Solutions LLCJoin this highly focused one-day seminar sponsored by Rohde & Schwarz and learn how to uncover, characterize, and solve the most elusive EMI problems. Lee Hill explains troubleshooting and localizing intermittent signals or multiple layers of broadband and narrowband signals can be frustrating even for the most seasoned EMC troubleshooter and RF engineer. We will discuss and demonstrate a number of test setups that can help the root causes of EMC test failures and then demonstrate ...

Notable Quote Doubting the Likelihood an Apple Cellphone

"Everyone's always asking me when Apple will come out with a cell phone. My answer is, 'Probably never.'" - David PogueThe New York Times, 2006 (now a Scientific American columnist). The first generation iPhone was released on June 29, 2007. Mr. Pogue explains, "Yeah, Okay. I'll admit it. My prediction was wrong - but my thinking was right. I knew that Steve Jobs would never tolerate the micromanagement that the carriers ...

Single Atom Serves as World's Smallest Magnet and Data Storage Device

Single Atom Serves as World's Smallest Magnet and Data Storage Device - RF Cafe"Dr. Christopher Lutz of IBM Research with IBM Research's Nobel-prize winning microscope he used to store data on a single-atom magnet. An international team of researchers have produced the world's smallest magnet and demonstrated that it's possible to use that magnet—an individual atom—to store a single bit of data. Until this latest research, led by teams at IBM Research Almaden and École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland, molecules were the smallest-ever data storage ..."

Thursday 16

Radiocrafts Cloud Connectivity Through 3G/4G LTE Gateway for Wireless IoT

Radiocrafts Solution Cloud Connectivity Through 3G/4G LTE Gateway for Wireless IoT - RF CafeRadiocrafts AS, a leading provider of RF modules, today presents a cloud connection solution for Internet of Things (IoT) applications, connecting low power radio sensor networks to cloud services. The FX30 expansion boards from Radiocrafts makes up a complete gateway together with the 3G/4G LTE modem from Sierra Wireless. By using the Radiocrafts expansion board for the FX30 and implementing network nodes based on the Radiocrafts RF modules, a complete IoT sensor ...

Fractal Antenna Technology to Enable Smart Clothing

Fractal Antenna Technology to Enable Smart Clothing - RF Cafe"As consumers become more interested in monitoring health, or tracking fitness training, or connecting to the internet of things (IoT), the demand for smart wearables will continue to grow. Currently wrist worn devices seem to be the most popular form factor for these solutions. However way to collect all this real-time data would be Smart Clothing. This does not require you to wear an additional device and is more natural, as the sensors and required circuits are built in to something that you ..."

Electronics-Themed Comics in Radio Craft Magazine

Electronics-Themed October 1944 & May 1945 Radio-Craft - RF CafeIn that these comics from Radio-Craft magazine have an electronics theme, you can claim looking at them is work-related. You might consider using one of them for your next conference or project status presentation. There is a list of many more similar comics at the bottom of the page in case you haven't seen them yet. I missed the comic on page 32 on the first posting of this page, but it's at the top now. Enjoy ...

Anatech Electronics Attenuator, Lowpass and Duplexer Filters

Anatech Electronics Product Update for March 7, 2017 - RF CafeAnatech Electronics offers the industry's largest portfolio of high-performance standard and customized RF and microwave filters and filter-related products for military, commercial, aerospace and defense, and industrial applications up to 40 GHz. Anatech has introduced a new 1 MHz lowpass filter with SMA connectors, a surface mount 890-915 MHz / 935-960 MHz SAW filter, and 30 dB fixed attenuator with SMA connectors. Custom designs are available ...

RF Electrical Engineer Wanted by Harris Space & Intelligence Systems

RF Electrical Engineer Wanted by Harris Space & Intelligence Systems - RF CafeHarris Space & Intelligence Systems is looking for an RF Electrical Engineer at its Palm Bay, Florida location to design and development of RF circuits, modules, and system architectures as part of a multi-discipline design team. Duties includes design, specifications, and test of frequency converters, LO generation circuits, low noise and power amplifiers, antenna and ADC & DAC interfaces, filters, module and hybrid layout and construction, engineering proof-of-concept testing, transition ...

IEEE 2017 International Conference on Microwaves for Intelligent Mobility

IEEE MTT-S 2017 International Conference on Microwaves for Intelligent Mobility - RF CafeThe third IEEE MTT-S 2017 International Conference on Microwaves for Intelligent Mobility (ICMIM2017) will be held on 19-21 March, 2017 in Nagoya, Aichi, Japan. This conference covers a broad range of topics that enable intelligent mobile systems through RF / microwave / millimeterwave components, circuits and systems. Potential applications include cognitive and autonomous automobiles and robots, wireless communications between ...

GlassDoor: 25 Top Paying Jobs in the USA

2016's Top Paying Jobs in the USA - RF CafeGlassDoor published its list of 25 top paying jobs in the USA. Not surprisingly, doctors are at the top of the list with a median base salary of $187,876. Patent attorneys rank #3 at $139,272! Most of the other top paying jobs are related to software and network engineering - mainly managers. At #22 is a Scrum Master, and of course everyone knows what that is ...

Wednesday 15

World w/o Wi-Fi Possible with Unlimited Data Plan Expansion

World w/o Wi-Fi Possible with Unlimited Data Plan Expansion"The Wi-Fi icon - a dot with radio waves radiating outward - glows on nearly every internet-connected device, from the iPhone to thermostats to TVs. But it's starting to fade from the limelight. With every major U.S. wireless carrier now offering unlimited data plans, consumers don't need to log on to a Wi-Fi network to avoid costly overage charges anymore. That's a critical change that threatens to render Wi-Fi obsolete. And with new competitive technologies crowding in, the future looks even dimmer ..."

Triad RF Systems Intros 1.4 to 1.8 GHz, 100 W, Bidirectional Amplifier

Triad RF Systems Intros 1.4 to 1.8 GHz, 100 W, Bidirectional Amplifier - RF CafeThe TTRM1185 LDMOS amplifier operates at a frequency range of 1400 MHz to 1800 MHz and has a power output of 100 Watts, while still maintaining a compact form factor of 5.38 x 4.39 x 1.31 inches. This unit also features internal protection against over/under voltage and excessive temperature conditions, which coupled with its rugged construction, ensure fault-free operation in even the most extreme environments. This class AB LDMOS ...

A Few Great RF & Microwave Engineering Articles for March 2017

A Few Great RF & Microwave Engineering Articles for March 2017 - RF CafeThis latest collection of RF and microwave articles from our industry's magazine publishers with a mix of topics. Among them is Jack Browne's 2-part series on FM modulation and demodulation and Mark Blackwood on waveguide plumbing. Items move onto and off of all homepages quickly, so even ...

High Speed RF Sampling ADC
    Boosts BW, DR, Lou Frenzel
Managing Modulation and
    Demodulation, by Jack Browne
GaN, GaAs, and LDMOS: A Secure
    Place for All, by Tim Galla  <more>

National Company Advertisement: Inductor Bank Switches

National Company Advertisement: Inductor Bank Switches, May 1939 QST - RF CafeNational Company, a major manufacturer of radio components, ran a very long series of advertisements in QST magazine that were in a format more reminiscent of a short essay than a company promotion. This installment for the May 1939 edition was number 63. Subjects ran the gamut from technical innovations from the company's research and development laboratory to social and political issues relevant to electronics technicians, hobbyists, students, and engineers. Here, company president James Millen explains the research and motivation for developing a new inductor switching arrangement ...

Antenna Physics: An Introduction

Antenna Physics: An Introduction - RF CafeDelve deeper into antenna theory. Radio amateurs are familiar with antennas and use them every day to communicate on the air. We learned some basic antenna theory while studying for license exams, and most of us have built an antenna or two. We know the basics and turn to the ARRL Handbook, ARRL Antenna Book, and other general texts when thinking about our next antenna project. Antenna Physics: An Introduction is written to bridge the gap between basic theory and graduate-level ...

Antenova to Reveal Chip Antennas for NB-IoT Standard at Embedded World

Antenova to Reveal Chip Antennas for New NB-IoT Standard at Embedded World - RF CafeAntenova, manufacturer of antennas and RF antenna modules for M2M and the Internet of Things, has developed a brand new antenna for the new Narrow Band IoT (NB-IoT) standard which was ratified last summer, and will show this antenna at Embedded World in Nuremberg in March. The antenna is small, measuring just 20 x 11 x 1.6 mm, and is built to a novel design which allows it to perform well within a device, whilst being easy to integrate onto a small PCB. This is a chip antenna in the company's lamiiANT antenna family ...

Eutelsat Signs up for Blue Origin's New Glenn Launcher

Eutelsat Signs up for Blue Origin's New Glenn Launcher - RF Cafe"Eutelsat Communications announced Tuesday at the Satellite 2017 Convention in Washington D.C. the conclusion of a contract with Blue Origin for a launch on the New Glenn rocket that is expected to initiate flights in 2020. The new partnership with Blue Origin reflects Eutelsat's longstanding strategy to source launch services from multiple agencies in order to secure access to space and partner with launch agencies that combine the highest levels of performance, flexibility and ..."

Tuesday 14

Mastering Terahertz Waves

Mastering Terahertz Waves - RF Cafe"Scientists have perfected a technique based on the usage of graphene, that allows for terahertz waves to be controlled accurately, paving the way for numerous applications. THz waves allow for the detection of materials that are undetectable at other frequencies. However, the use of these waves is severely limited by the absence of suitable devices and materials allowing to control them. Researchers have developed a technique based on the use of graphene, which allows for the potentially very quick control ..."

ConductRF Offering Standard RF Cable Assembly Solutions

ConductRF Offering Standard RF Cable Assembly Solutions - RF CafeConductRF announces the availability of RG & LMR flexible, Hand-formable, and Flexible performance RF coaxial cable solutions that offer extra shielding, low loss and higher performance. Please contact ConductRF support engineers for your custom applications and special requirements ...

External RF Filters for Signal Analysis on the Go with the IDA 2 from Narda

External RF Filters for Signal Analysis on the Go with the IDA 2 from Narda Safety Test Solutions - RF CafeNarda Safety Test Solutions has released efficient external RF filters for its IDA 2 handheld signal analyzer. These optional RF filters help users to in particular avoid out of band overmodulation without reducing the necessary measurement sensitivity when making measurements with the IDA 2 in highly dynamic measurement environments. These overmodulation effects can occur when very weak RF signals need to be measured in the presence of much stronger signals. This is because high measurement sensitivity is needed for precise measurement of the relevant low strength signal. This can lead to ...

Mac's Radio Service Shop: Looking Forward and Backward

Mac's Radio Service Shop: Looking Forward and Backward, March 1951 Radio & Television News - RF CafeNot ten minutes before, a cloud of swirling snowflakes had been brushing against the front window of Mac's Radio Service Shop, but now the bright sun had suddenly popped through an opening in the ragged, wind-torn clouds and was melting the skift of snow that had scarcely had time to settle on the sidewalk. "Sure is a funny day," mused Barney, the apprentice technician. "Acts as though it can't decide whether to go forward into spring or backward into winter." "That's March for you," Mac grunted ...

Guerrilla RF Announces Completion of $2.8M Series D Funding Round

Guerrilla RF Announces Completion of $2.8M Series D Funding Round - RF CafeGuerrilla RF, a leading provider of high performance RF and microwave integrated circuits (ICs) for wireless applications, today announces the closing of a $2.8M Series D funding round with participation from multiple angel investors. The $2.8M funding is composed of a combination of equity and debt. Guerrilla RF expects to employ 20 total associates by year-end. The company will be expanding their current facility, in order to accommodate this projected growth. "Coming out of an exciting year ..."

IEEE 5G Summit in Kolkata: Connecting the Unconnected with 5G Rollout

IEEE 5G Summit in Kolkata: Connecting the Unconnected with 5G Rollout - RF Cafe"IEEE, has announced an upcoming IEEE 5G Summit to be held from 17-18 March 2017 in Kolkata, India. Through IEEE 5G Summits and other activities, the IEEE 5G Initiative is working to connect the unconnected and drive innovation through next-generation wireless network technology that is expected to significantly increase data speeds, produce ultra-low latency times, support the connection of many more devices, and increase energy efficiency of network elements. The IEEE 5G Summit at Kolkata, India ..."

Monday 13

Swatch Group Creates World's Smallest Bluetooth Chip

Swatch Group Creates World's Smallest Bluetooth Chip - RF Cafe"Three world records in the 'Swiss Silicon Valley.' Swatch Group is proud to introduce a new Bluetooth chip with exceptional features unrivaled by any existing product. The new integrated circuit, designed 100% by EM Microelectronic, Swatch Group R&D and the Swiss Center for Electronics and Microtechnology (CSEM), has already set the following records: It is – first and foremost – the smallest Bluetooth chip on the market. The ultra-miniaturization of electronic components is crucial ..."

Hi-Fi at the Planetarium

Hi-Fi at the Planetarium, January 1955 Popular Electronics - RF CafeAudiophiles of the 1950s undoubtedly were impressed by the mention of a Rek-o-kut twin turntable with Pickering arms and pickups for playing records, let alone a twin Ampex tape system used both for recording and reproducing. That was awe-inducing stuff for the day, especially when applied to a planetarium show with visual and sound effects realistic enough to , "make adult members of the audience duck under their seats." We don't scare so easily these days. Here is the story of New York City's famous Hayden Planetarium ...

UK-Led Team to Develop Low Flying Satellites

UK-Led Team to Develop Low Flying Satellites - RF Cafe"Engineers at the University of Manchester are leading a European effort to develop remote-sensing satellites that could fly in far lower orbits than any existing technology. Such spacecraft could provide better resolution images and would be easier to bring back down to Earth at the end of their lives, thereby reducing the chances of them contributing to the growing problem of space debris. Widely used for environmental and defence applications, remote sensing ..."

everything RF Coverage of Mobile World Congress 2017

everything RF Coverage of Mobile World Congress 2017 - RF Cafeeverything RF posted extended coverage of announcement made at the 2017 Mobile World Congress. Please see their website for complete information: Event Overview -- "The GSMA Mobile World Congress is the place where mobile leaders to gather, collaborate and conduct business. The annual event provides one of the best venues for mobile industry networking, new business opportunities and deal-making. Mobile World Congress includes a world-class conference featuring visionary keynotes ..."

Long-Time Crystal Manufacturer ICM Going out of Business

Long-Time Crystal Manufacturer ICM Going out of Business - RF CafeRF Cafe visitor Denny C. wrote with news about International Crystal Manufacturing (ICM), founded in 1955, having the following posted on their homepage: "We are writing to inform you that [ICM] is unfortunately going out of business... We are looking at the end of May... We would like to thank you for your past business... We have tried hard to make each one of our customers happy..." Also: "ICM is a proud supplier to Radio Shack [which is filing for bankruptcy]." ...

Harris Spectrum Warfare Blends Electronic and Optical Warfare

Harris Spectrum Warfare Blends Electronic and Optical Warfare - RF Cafe"Researchers at Harris Corp. are focusing on advanced technologies for electronic warfare (EW), optical warfare, and cyber warfare - better-known as spectrum warfare - to find ways of integrating these technologies rapidly into U.S. military weapon systems. Officials of the U.S. Air Force Research Laboratory at Wright-Patterson Air Force Base, Ohio, have announced a $24.9 million contract to the Harris Corp. ..."

Sunday 12

RF Cafe Engineering Crossword Puzzle w/Weekly Headlines

RF Cafe Engineering Crossword Puzzle w/Weekly Headlines March 12, 2017For the sake of avid cruciverbalists amongst us, each week I create a new crossword puzzle that has a theme related to engineering, mathematics, chemistry, physics, and other technical words. Clues in this puzzle with an asterisk (*) are pulled from this past week's (3/6 - 3/10) "High Tech News" column on the RF Cafe homepage. Enjoy ...

Saelig Intros ThunderSync16 Universal USB Thunderbolt 16 Port Hub

Saelig Intros ThunderSync16 Universal USB Thunderbolt 16 Port Hub - RF CafeSaelig Company is pleased to introduce the Cambrionix ThunderSync16, which provides 16 x USB2.0 ports and a Thunderbolt host connection, capable of transfer speeds of up to 20Gbits/s to allow large data transfer in the shortest possible time. For data syncing requirements, the data transfer speed offered by Thunderbolt delivers a greatly increased data transfer rate between a host Thunderbolt connection and 16 attached devices than a USB2.0 connection. The ThunderSync 16 ...

Friday 10

Carl & Jerry: The Blubber Banisher

Carl & Jerry: The Blubber Banisher, July 1959 Popular Electronics - RF CafeJohn Frye, as it turns out, was way ahead of his time. Many of the somewhat zany electronics devices his fictitious teenage experimenters cum hobbyists cum scientists cum Ham radio operators cum amateur sleuths Carl and Jerry came up with have turned out to be products available and popular in today's consumer marketplace. This episode can be regarded as an early developmental version of a wearable calorie burner facilitation device. Jerry's "Blubber Burner" sports an un-politically-correct name and uses ...

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RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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