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
Photo by PY3VK – QTH ZX5J – PT5J – PP5JR 2020 CQ World-Wide WPX Contest SSB: March 28-29, 2020 CW: May 30-31, 2020 Starts: 0000 UTC... Read more
Via DXengineering Blog Many hams ask why they should bother to add the recommended radial field to their ground-mounted vertical antenna. There are re... Read more
he Garden School (K2GSG) and Hall of Science Amateur Radio clubs (ARC) in New York City will join forces this month to put Amateur Radio on display du... Read more
A thorough and fully annotated discussion of Near Vertical Incidence Skywave (NVIS) is available in the research paper, “Radio Communication via Near... Read more
FOR IMMEDIATE RELEASE Pristina, Kosovo ANOTHER ACTIVATION FROM THE BALKANS — ALBANIA AND KOSOVO Combining the interests of two countries with the sam... Read more
In recent years, the increasing number of disasters like hurricanes, earthquakes, tsunamis and floods has highlighted the urgency of establishing stro... Read more
Jacek SP5APW will be active from Koh Rong Sanloem Island, IOTA AS-133, 12 – 18 April 2016 as XU7AKC. He will operate on HF Bands. QSL via home call So... Read more
The final European Conference of Postal and Telecommunications Administrations (CEPT) Conference Preparatory Group (CPG) meeting prior to World Radioc... Read more
The BTECH Mobiles Have Been Treated to a Full Redesign and Upgrade BaoFeng Tech announced today the launch of three new mobile radios. The BT... Read more
Although there are ways of messaging people with the Apple Watch — either with Siri dictation, or using pre-written responses and emojis — as far as I... Read more
Delta loop Antenna Boom length: about 7m, projection on the ground 4m per arm Mounts on mast from 40 to 50mm, 60mm optional. suggested height at least... Read more
A major flare on the sun has “ionized the top of the Earth’s atmosphere” triggering a low frequency radio blackout over portions of... Read more
BY Larry Wood The numbers are in, and once again, Schofield Middle School’s Amateur Radio Club achieved two top 10 rankings in the American Rad... Read more
AnyTone AT-D868UV Today, Qixiang Electron Science & Technology Co., Ltd, the Chinese manufacturer that produces the AnyTone line of two-way... Read more
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CQ WPX Contest CW : May 30 – 31
Why Use Radials?
Ham Radio will be Represented at 9th Annual World Maker Faire in New York City
NVIS Research Paper Available
ZA90IARU, ZA1WW Albania & Z60A, Z60WW Kosovo
How ITU is strengthening emergency communications in the Americas
XU7AKC Koh Rong Sanloem Island AS-133
2 Meter Sharing Proposal is on CEPT Conference Preparatory Group Agenda
BTECH Mobiles Launched with X-Series Update
Nifty app uses Morse code to send Apple Watch messages
Solid Delta loop for 20m band
Strong Solar Flare Triggers Radio Blackout
Schofield Radio Club earns two top 10 national rankings
AnyTone AT-D868UV dual-band VHF and UHF DMR portable
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