DARPA, through its Innovative Vacuum Electronic Science and Technology (INVEST) program, aims to develop the science and technology base for new generations of more capable vacuum tube electronic devices (VEDs).
Those microwaves that heat the food in your microwave oven come from a magnetron, the vacuum tube that made radar possible in the first half of the 20th century. Traveling wave tubes (TWTs), not solid-state amplifiers, generate the strong electromagnetic signals in communication satellites because of their exceptional on-orbit reliability and high power efficiency. Tubes are not dead!….READ MORE
Tuvalu For general info, Atu Maui, T2AM, is the Director of Information and Communications Technologies (ICT) for the government of Tuvalu and is a li... Read more
Review of MFJ-8504B RF Receiver Distribution Amplifier Read more
Jamboree Worldwide station registration is open for the 2015 Boy Scouts Jamboree On The Air/Jamboree On The Internet (JOTA/JOTI), which will take plac... Read more
As an NZART member you support the ranks of thousands of other ham radio enthusiasts shaping the Amateur Radio service today. If you consider yourself... Read more
Well-known contester and DXpeditioner Paul H. Newberry, Jr., N4PN, of Macon, Georgia, died on November 5 after suffering a massive heart attack. An AR... Read more
China’s twin-launch Chang’e 4 mission to the far side of the moon will place a pair of microsatellites in lunar orbit this spring “to test low-frequen... Read more
VERSATILE RADIO FOR AMATEUR AND COMMERCIAL USEThe NSTIG-8R is certified for use on commercial and amateur frequencies. The NSTIG-8R is FCC Cert... Read more
Source : 8-year-old radio amateur Hope Lea KM4IPF made her first contact just 45 minutes after her callsign appeared in the FCC database. The contact... Read more
DCU-3 Programmable Rotator Controller6 Programmable memories; Point & shoot and manual control!DCU-3 Digital Controllers feature six presets for... Read more
Experimental operations now under way on HF appear aimed at leveraging low-latency HF propagation to shave microseconds from futures market trades and... Read more
NanoRacks reports on a delivery of payloads to the ISS including three CubeSats which are part of NASA’s Educational Launch of Nanosatellites (ELaNa)... Read more
ARRL Field Day is June 22 – 23. See the May issue of QST, page 85, for the Field Day announcement. The Field Day site locator is now up and running, a... Read more
This is only a test… Amateur Radio is playing a major role in the largest FEMA exercise of 2016, “Cascadia Rising,” which got under way on June 7 and... Read more
This demonstrates turning an Android Tablet (or Android Phone) into a highly portable comms receiver or spectrum analyzer operating from Long Wave to... Read more
The WISA Woodsat project, being sponsored by plywood supplier WISA in an unconventional PR initiative, is poised to place a wooden satellite into orbi... Read more
More
T2AM – Tuvalu
Review of MFJ-8504B RF Receiver Distribution Amplifier
Jamboree On The Air 2015 Station Registration is Open
Break-In Magazine – ZL National Amateur Radio Society
Well-Known Contester, DXer Paul Newberry, N4PN, SK
Chinese Lunar-Orbit Amateur Radio Payload Could Launch this Spring
NSTIG-8R Dual Band (VHF/UHF) Analog Portable Two-Way Radio
Young ham’s first contact is via OSCAR satellite
DCU-3 Programmable Rotator Controller
Experiments Look to Leverage Low-Latency HF to Shave Microseconds off Trade Times
Three ELaNa CubeSats delivered to Space Station
ARRL Field Day Site Locator is Live, Promotional Material Available
Pacific Northwest Earthquake Exercise Reaching for Realistic Response Scenario
SDR Touch demo on Android device using SDRplay RSP
Wooden Satellite to Launch by Year’s End
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fdarpas-dream-vacuum-tubes-from-3-d-printers%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
