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
HYS TC-MAUV11 Product Detail Basic Info Model NO.: TC-MAUV11 Type: Vehicle Mouted Function: Mobile Radio Place of Origin: Fujian, China (Mainland) Bra... Read more
“COOKEVILLE — It’s a hobby that is considered “old school” by many, but it is a vital component when it comes to communication during dis... Read more
Gabrielle Calise/The Gainesville Sun Bryan Clark, a 15-year-old Loften High School student and vice president of the ham radio club, attempts to make... Read more
Sainte Marie Island Eric F6ICX will be active again from Sainte Marie (Nosy Boraha) Island, IOTA AF-090, 1 November to 12 December 2015 as 5R8IC. QSL... Read more
Turn your Arduino into a powerful radio transceiver! HamShield lets your Arduino talk to far away people and things using powerful amateur radio b... Read more
ARRL San Francisco Section Manager Bill Hillendahl, KH6GJV, says the message he stresses during the weekly Sonoma County Radio Amateurs (SCRA) ARES ne... Read more
Now, the VOA Learning English program, Words and Their Stories. Different people have different ways of saying things – their own special expre... Read more
An Excellent Dual Band Yagi for 70/144MHz on a 2.4m boom and single feed point The 4-2-12 Dual Band Yagi has a total of 12 elements, 5 elements are us... Read more
CubicSDR is a cross-platform Software-Defined Radio application which allows you to navigate the radio spectrum and demodulate any signals you might d... Read more
“My BITX-40 40 meter SSB QRP transceiver kit has arrived from India. This kit isells for $59 including shipping. My kit took 17 days to arrive f... Read more
Icom IC-7200 IF DSP The latest IF DSP technology is employed in the IC-7200. While the IC-7200 is an entry-class transceiver, advanced digital feature... Read more
Rodney, is asking if he can use the same ground rod to ground two different dipole antennas without losing efficiency or performance? Read more
I’m breaking it down this time, One of the all time most asked questions I get, Should you buy the Icom or the Yaesu? Do looks matter? Read more
BAOFENG BF-888S Product Features and Technical Details Product Features 50 CTCSS/105 CDCSS/VOX Function Voice Prompt/PC Programming/voice scramble/enc... Read more
Yaesu FT 991 Versus Icom IC-910 in 144MHz “We compare the FT-991 receiver performance on 2m with two other radios. Justin, G0KSC, from Waters... Read more
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HYS TC-MAUV11 Dual Band with DTMF
HAM Radio vital to emergency communications
High school students call around the world via amateur radio club
5R8IC Sainte Marie Island AF-090
HamShield for Arduino (VHF/UHF transceiver)
ARRL Section Manager Evacuates When Fire Comes Within Two Blocks
S.O.S. – In Other Words, Help!
A Dualband 50/70MHz Yagi with single feedpoint – 5/7 (12) element 144/70MHz Yagi (2.4m)
CubicSDR v0.2.5 has been released
BITX-40 Unboxing by K7AGE
Icom IC-7200 HF/50MHz Transceiver
You only need one Station Ground Rod
Icom IC7300 vs Yaesu FT991a
BAOFENG BF-888S UHF FM
Yaesu FT 991 Versus Icom IC-910 in 144MHz
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