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ATU for 27-MMHz CB radios

Based on a Labs project | October 2011 | Find it here
ATU for 27-MMHz CB radios
This antenna tuning unit (ATU) enables half-wavelength (1⁄2 λ) or longer wire antennas to be matched to the 50-Ω antenna input of 27-MHz Citizens’ Band (CB) rigs. The ATU is useful in those cases where a wire antenna is less obtrusive than a roof-mounted ‘vertical’ or ground-plane.
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