The essentials of AC power safety. If you’re bringing ac power directly into your new product, then the implementation methods to get a safe device need to be carefully considered as part of the design. If you don’t, getting things wrong with ac power can lead to deadly devices, and smoke-filled outcomes.
Do-it-yourself strain relief: a necessary task. Basics like strain relief are critical to the long-term reliability of cables and connectors: Neglect it and you could have an unpleasant surprise; anticipate it and you could be a happy user.
A nightmare for HAM Radio operators: The “Russian Woodpecker” In the 1970s and 80s Russia deployed their Over-the-Horizon Radar (OTHR) which ultimately became known as the “Russian Woodpecker” to ham radio enthusiasts worldwide. Why that moniker? Well the signal emitted a sound pattern of its transmitted pulses at HF frequencies that was heard on worldwide shortwave radios to the annoyance of ham operators. You can hear the sound of the Woodpecker signal on YouTube here.
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