Example: air traffic controller
Study Guide for Exam Questions - ARRL - Home
Study Guide for Exam Questions 3 G2A09 Why do most amateur stations use lower sideband on the 160-meter, 75-meter and 40-meter bands? A. Lower sideband is more efficient than upper sideband at these frequencies B. Lower sideband is the only sideband legal on these frequency bands C. Because it is fully compatible with an AM detector
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A Quick Trainer and Field Resource Guide for the …
www.arrl.orgPage 2 This manual is intended to serve as a quick trainer and reference for amateurs deployed in the field for emergency services work, primarily through the ARRL Amateur Radio Emergency Service (ARES).
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www.arrl.orgThe QN signals listed above are special ARRL signals for use in amateur cw nets only. They are not for use in casual amateur conversation. Other meanings that may be used in other services do not apply.
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www.arrl.org50 July 2002 also be protected. The method of protection will change, how-ever, since the interface is electronic. Once the peak operating interface voltages are determined, it is relatively straightfor-
A Home-made Ultrasonic Power Line Arc Detector
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Field Day - arrl.org
www.arrl.orgField Day Entry Submission Instructions: Please make certain that your required summary sheet is complete with the following fields filled in:
Registration Form - American Radio Relay League
www.arrl.orgAmateur Radio Emergency Service@ ARES@ Registration Form Name: Cal Sign: Mailing Address: City, state, ZIP code: e-mail address(es): Home phone number:
The NorCal Sierra: An 80-15 M CW Transceiver
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www.arrl.orgQEX – May/June 2013 7 important role in the generator. A DDS chip like this one builds the waveform using discrete voltage samples whose amplitudes
The Ultimate Transmatch
www.arrl.organd The Ultimate Transmatch BY LEWIS G. MCCOY, *WIICP OME amateurs assume that because they use coaxial feed lines they don't need a Trans- match.
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