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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024

Webmaster:

    Kirt Blattenberger,

    BSEE - KB3UON

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 World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

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Tech Headline News Archive - April 2021

Technology Headline News Archives - RF Cafe

If you came to RF Cafe looking for a certain news item you remember seeing or found on a search engine, there is a good chance it is no longer on the homepage. Headlines change daily (except Saturdays). Here are links to all the headline archives.

All the News Fit to Link™

2021: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2020: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2019: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2018: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

2017: Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec

4/30/2021

• National Amateur Radio Operators Day Bill Offered in Congress

• DoD Seeks Ideas for Real-Time Spectrum Sharing

• ARISS-USA Seeks Volunteers to Further Its Mission

• Experimental Military Navigation Satellite Pushed out to 2023

• France Buys Stake in OneWeb Satellite Internet

4/29/2021

• China's Satellites with Grappling Arm Can Grab U.S. Satellites

• New FCC RF Exposure Rules Take Effect May 3rd

• Epic 800 MHz Re-Banding Program Concludes

• Apple to Invest $430B in U.S. Operations

• In Fixing GPS, Timing Is Everything

4/28/2021

• Virtual CubeSat Developers Workshop is April 27–29

• Live Sessions at Virtual IEEE WAMICON 2021

• 5G in U.S. Boosts Towercos More Then Telcos

• Could the Ongoing Chip Shortage Linger Until 2023?

• Project Looks to Create Platform for Trusted Electronics

4/27/2021

• What Chip Shortages Taught Us About Supply Chain Resiliency

• Skyworks Buys Auto Unit from Si Labs for $2.75B

• China Boasts 792K Base Stations for 5G

• Cellular Industry's Clash over the Movement to Remake Networks

• FCC to Permit "Hot Car" Sensors in 57-64 GHz Band

4/26/2021

• Youth on the Air (YOTA) a Go for July 11-16!

• Marines Making Big Investments in EW

• UK Cites National Security Reasons for Probing Nvidia's ARM Deal

• Semiconductor Shortage Halts Production at Jaguar Plants

• Silicon Labs Sells Infrastructure to Get on IoT Bandwagon

4/23/2021

• Challenges Satellite Internet Must Address

• AM Radio Still Alive and Well

• DNS Flaws Expose Millions of IoT Devices to Hackers

• Amazon Buys 9 Atlas 5 Launches for Kuiper Broadband Constellation

• LED Community Saddened by Loss of Nobel Laureate Isamu Akasaki

4/22/2021

• Smartphone Revenues to Rebound by 13% in 2021

• Wi-Fi 7 Will Require New Level of Testing

• Canada Raps Bell's Knuckles on Pole Access

• Archive of Marconi Papers Acquired by California Museum

• Cyber Crime up 6%: E-mails, Texts, Phone Calls

4/21/2021

• Romania Latest Country to Implement Huawei 5G Ban

• NSF Funds Creation of Research Lab at Alaska's HAARP

• U.S. Space Force Introducing Commercial Capability Mission Areas

• The Circular Electronics Partnership

• DuckDuckGo Can Now Block Google Chrome Tracking Method

4/20/2021

• Global Cellular IoT Module Shipments Declined 6% YoY in Q4 2020

• Senators Push Quantum Computing at DoD

• Ulrich Rohde, N1UL, Awarded Germany's Cross of Merit

• 93% of Manufacturing Personnel Want to get Back to Work

• Atom Interferometry Demonstrated in Space

4/19/2021

• Ham Bootcamp Program on April 24th

• Student's Physics Homework Picked up by Amazon Quantum Researchers

• Port Congestion Continues to Throttle World Supply Chains

• People May Trust Computers More Than Humans

• FCC Publishes Pirate Radio Enforcement Provisions

4/16/2021

• Celebrate World Amateur Radio Day on April 18

• Lockheed Martin, Omnispace Eye Global 5G Hybrid Network

• CCA Urges FCC to Consider Higher-Power Rules for CBRS

• Ericsson Puts 5G to Work in Its Texas Factory

• Solar-to-Hydrogen Sees "Remarkable" Efficiency Jump

4/15/2021

• Huawei to Beat U.S. Sanctions with Software, Automotive

• RAC "Get on the Air on World Amateur Radio Day" Event

• Business Is Booming in China... Again (that virus thing paid in spades)

• 2020 Semi Revenues up 10.4%

• U.S. Export Ban Metastasizes to Chinese Supercomputing Companies

4/14/2021

FCC's Updated RF Exposure Rules Effective on May 3 - RF Cafe FCC's Updated RF Exposure Rules for Amateur Stations Effective on May 3

• Spain Bends Some Rules to Secure Mobile World Congress 2021

• 2021 Trends in the Electronics Industry

• AT&T Sues Pittsburgh over Small Cell Fees

• First Wi-Fi 6E-Enabled 8K TV

4/13/2021

• Space Force Unveils Plans for Space Systems Command

• France's ANFR Spectrum Agency Authorizes 22,857 5G Sites

• ARISS USA Gets IRS 501(c)(3) Recognition

• BAE Systems Receives Adaptive Radio Frequency Contracts from DARPA

• Aluminum Batteries a Step Closer

4/12/2021

• IEEE Launches Revised Reporting Process for Professional Ethics Violations

• "Tantalizing" Results of 2 Experiments Defy Physics Rulebook

• Private Equity Firm Bids $20B+ for Toshiba

• Verizon's "Fastest 5G" Claim Stands up in NAD Ruling

• China to Reach 739M 5G Subs by 2025

4/9/2021

• LG's Cellphone Exit Spells Upheaval for Prepaid

• Hams Invited to Take Part in MARS Exercise on 60 Meters

• Inmarsat to Fight Dutch Government over 5G Eviction

• "Good Vibrations" for Piezo MEMS Market

• Verizon Looking to Offload LMDS Spectrum Holdings?

4/8/2021

• Trials with Frequency Beyond 100 GHz for 5G Backhaul

• Defense Intelligence Agency Progresses on MARS Database

• Huawei Beats U.S. Sanctions to Make Profit in 2020

• In-Person Friedrichshafen Ham Radio Exhibition Canceled for 2021

• Data from 500M Stolen Facebook Accounts Posted on Hacker Site

4/7/2021

• IMS 2021 to Take Place as a Live Event in Atlanta

• Flexible Indium Phosphide DHBT with fT = 337 GHz

• Supply Chain Robust for 2021 and Beyond

• A New State of Light

• Combating China's Quest for Tech Dominance

4/6/2021

• SCOTUS Rules in Favor of FCC and NAB

• U.S., China "Race to 5G" Rages On

• Georgia Tech Readies "Wireless Power Grid" for 5G

• TSMC to Spend $100B in 3 Years

• Qubits Composed of Holes

4/5/2021

• FCC Mulls Setting Aside Spectrum for Space Launches

• World Amateur Radio Day (WARD) 2021 is April 18th

• Big Tech Seeks Immunity from Class Action Lawsuits

• ESA Looks to Begin In-Space Servicing Market

• Manufacturing Output Approaches Record Levels as Recovery Surges Thanks to Last Administration's "Operation Warp Speed" Covid-19 Vaccine Development

4/2/2021

• Dayton Hamvention Weekend Activities Announced

• Hong Kong Government to Award New 5G Spectrum in Q4

• Made in China, Sold on Amazon: Numbers Skyrocketing

• Maintaining Stable Supply Chain Despite Pandemic

• CubeSat Spacecraft

4/1/2021

• 5G Adoption Low for Prepaid Carriers

• Upward Radar Device Submitted to FCC for Approval

• European 5G Has €300B Price Tag

• 5G Isn't Just About Phones

• Combining Complementary Wireless Technologies for Industry 4.0

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