Is the myth true? EDIT: +6 dB is 4x the power
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There’s an urban legend that if you hold a wireless car key up to your face it’ll increase its range.
It sounds crazy, but I want to know if it works. Could I actually increase the range of my wireless car key? If my face works, what else might work? So, I called up the brightest, sharpest minds in Keysight and some of the marketing department and told them whoever could get the best signal improvement wins $100 dollars. We’re measuring power in dBm using a FieldFox. Everyone starts out with an unaided, baseline power measurement. Whoever can improve their signal the most from their key’s baseline wins. The higher the power, the farther the range.
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0:00 Can your head increase key fob range?
0:30 Overview of homemade signal and range boosters
1:24 Increasing car key signal power
3:03 The winner and results
3:31 Anechoic chamber
4:12 Key fob operation visualized on FieldFox
4:56 Baseline car key power measurement in the anechoic chamber
5:31 dB vs. dBm
5:42 Wireless car key fob face and head test
5:51 Tin foil hat test
6:07 3D printed reflector with foil test
7:01 Large reflective photography umbrella test
7:31 Metal coffee cup test
7:50 Wrap-up – recommendations for increasing range
8:21 What is the new extended range?
8:51 Is the myth true?
9:16 Winners
#RFEngineering #WirelessMeasurement #KeyFobFace #WirelessPower #electronicslab #testgear #electronics #electricalengineering #computerengineering
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