Crystal Radio constructed with unusually large passive components with the goal of obtaining an extremely high Q. Variable capacitor from a B-17 Bomber’s antenna tuner 
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DU3500AL Automatic Tuner by HA8DU Frequency range : 1,8-30MHz Matching range : max power 5:1 SWR 1,8MHz 35 ohm – 150 ohm 3,5MHz 35 ohm – 150 ohm 7 MHz 25 ohm – 200 ohm 10 MHz 25 ohm – ... Read more
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Review of MFJ-8504B RF Receiver Distribution Amplifier
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In the Arctic, the radar “Sunflower” will be deployed in 2017
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Soviet Union (Russian) Military Radiotelegraph Key via Finland
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Introducing . . . New MFJ CWMorse Micro Telegraph Keys
MFJ-566M, $29,95 Red/Black Micro Morse Code Key with aluminum base. Liquid smooth and shielded steel ball bearings. Hardened steel pin rotation and st... Read more
NEW LINUX UBUNTU DISTRIBUTION MADE FOR SOFTWARE DEFINED RADIO
“Welcome to the first release of Skywave Linux! This is an operating system designed to provide access to a growing network of software defined... Read more
ARRL Rookie Roundup RTTY Event is August 16
The ARRL Rookie Roundup returns to RTTY Sunday, August 16, 1800 UTC through 2359 UTC. For the purposes of this operating event, a “Rookie” is any radi... Read more
Nominations Sought for 2018 ARRL Bill Leonard Award
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ARRL Member Had Role in Promising RF Treatment Device for Alzheimer’s
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Radio Direction Finder DF2020T
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