This device may have a practical use but I can't see what it will be - it boosts the SWR in all directions - in the entire HF band, INCLUDING the CB band, at a frequency of 27 MHz approximately 3.x:1. This dampened reception, when tested on my SDR the average dampening at 27MHz was about 3dB, but it dampened throughout the RF spectrum. $7 is way too many return issues - be warned.
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