Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes Calculators Education Engineering Magazine Articles Engineering software RF Cafe Archives Magazine Sponsor RF Cafe Sponsor Links Saturday Evening Post NEETS EW Radar Handbook Microwave Museum About RF Cafe Aegis Power Systems Alliance Test Equipment Centric RF Empower RF ISOTEC Reactel RF Connector Technology San Francisco Circuits Anritsu Amplifier Solutions Anatech Electronics Axiom Test Equipment Conduct RF Copper Mountain Technologies Exodus Advanced Communications Innovative Power Products KR Filters LadyBug Technologies Rigol TotalTemp Technologies Werbel Microwave Windfreak Technologies Wireless Telecom Group Withwave RF Cafe Software Resources Vintage Magazines RF Cafe Software WhoIs entry for RF Cafe.com Thank you for visiting RF Cafe!

Exodus Advanced Communications Best in Class RF Amplifier SSPAs

Innovative Power Products Passive RF Products - RF Cafe

Please Support RF Cafe by purchasing my  ridiculously low-priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

Axiom Test Equipment - RF Cafe

Cool Pic Archive #13

Cool Pic Archive Pages

| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |

These images have been chosen for their uniqueness. Subject matter ranges from historic events, to really cool phenomena in science and engineering, to relevant place, to ingenious contraptions, to interesting products (which now has its own dedicated Featured Product category).

RF Cafe: Here is a a new kind of plot called Wireless Geography. All of downtown Salt Lake City is covered by a cloud of Wi-Fi, but the strength of the signal varies. This 3-D view show the area and signal strength superimposed over the city buildings and surrounding terrain.


RF Cafe: IBM's Airgap MicroprocessorIBM has integrated self-assembly techniques with its manufacturing lines to create a test version of its latest "airgap microprocessor" that uses vacuum gaps to insulate nano-scale wires connecting hundreds of millions of transistors. The revolutionary process reduces electrical interference, raises processor performance, and lowers energy consumption.


RF Cafe: Plasma AntennaPlasma Parabolic Reflector technology is being developed in hopes of creating stealth radar antennas. The plasma inside the glass tube array becomes conductive only when ionized during the time the radar is actually transmitting or receiving. A feed horn services the array at frequencies up to 20 GHz.


Never befre seen Trinity atom bomb explosion photographsI am privileged to present a collection of never-before-seen photographs of the atomic bomb tests at the Trinity Site. My brother-in-law's father worked there during WWII and had these images stowed away for 60 years.


RF Cafe: World's largest cellphoneA Chinese man, Mr. Tan, is aiming to get into the Guinness Book of World Records for what he claims is the world's largest working mobile phone. The phone is 3 feet high and weighs 48 lbs - and is an exact copy of the Nokia phone that he uses daily. It has all the same functions, including a camera, but does not vibrate when it rings. Question: Is it still really a "mobile?"


RF Cafe: Flying Saucer house in Chattanooga, TNArea 51 is not the only place aliens have landed in the U.S. This flying saucer must have been left behind by visitors in Chattanooga, TN, back around 1970. If you are a SciFi fan, here is your chance to own it. Check out the listing on eBay. Interplanetary space ships are amazingly affordable.


RF Cafe: TestParts.com's BNC ManRF Cafe: TestParts.com's BNC ManLegos™ are for the mechanical engineers' kids. RF engineers' kids build with connectors, at least that is what Terry's (TestParts.com) kids use. Shown here is "BNC Man." BNC Man's kids could as easily be constructed from SMA connectors, and giants from Ns. TestParts.com will be more than happy to sell you a set.


RF Cafe - SEM image of wire failureT&M World has a series of SEM (scanning electron micrograph) images of many RF Cafe - SEM image of wire failurecommon types of wire failures, along with an explanation of the telltale signatures - very good info. (apologies for their obnoxious ad screen)


RF Cafe: Dinner in the SkyTired of the same old dark, stuffy meeting rooms? "Dinner in the Sky" offers a unique venue that is sure to impress - and maybe terrify - your customers. For a mere 7.900€ ($12,500), your 1st-string team can wow top technical staff and management when pitching that new product while enjoying panoramic views from 50 m (0.25 furlongs) in the air. This has to be great fodder for a Dilbert cartoon!


Man stands inside Faraday shieldIntruder held at bay inside a metal cage by a stream of lightning bolts. Actually, these guys know what they are doing and demonstrate many principles of how to safely work with extremely high voltages.


RF Cafe - CFL warning signThis is a warning sign for compact fluorescent lights (CFLs). I kid you not. "Vacate the room and ventilate it for at least 15 minutes." Thus sayeth DEFRA.


RF Cafe: Arthur C. Clarke's proposal for geostationary satellites  - October 1945 Wireless WorldArthur C. Clarke's scheme for a geostationary satellite system ("Extra-Terrestrial Relays") was published in the RF Cafe: Arthur C. Clarke's proposal for geostationary satellites  - October 1945 Wireless WorldOctober 1945 edition of Wireless World magazine. Along with 2001: A Space Odyssey, and other novels, Sir Clarke wrote many scientific books and papers. He died just a few days ago.


RF Cafe: Cool PicNew methods found for harnessing the sun.


RF Cafe: Epson prints silicon transistors with an inkjet printerEpson has developed a method for printing a transistor using an inkjet printer with a modified head that uses liquid silicon. It is a compound of silicon and hydrogen known as cyclopentasilane, which is comprised of 5 silicon atoms and 10 hydrogen atoms forming a closed ring.


RF Cafe: Stamp Honoring Scientist Contains Chemical ErrorThis U.S. postage stamp is to be printed even with a known error in chemical structure. It is a commemorative stamp to [dis]honor biochemist Gerty Cori. This really validates the old adage, "Good enough for government work!"


New York Talk ExchangeResearchers from MIT have created a novel art project that reveals the complex dynamics of talk that exist between New York and other cities around the globe. The project, called New York Talk Exchange (NYTE), is based around an analysis of telecommunications traffic flowing to and from New York City. It is on display at The Museum of Modern Art (MoMA) exhibition, "Design and the Elastic Mind."


Axiom Test Equipment - RF Cafe
withwave microwave devices - RF Cafe

everythingRF RF & Microwave Parts Database (h1)

PCB Directory (Manufacturers)