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"I'm seeing around 3 watts swinging to under 7 watts, running at 14.1VDC (regulated 10A supply)..."


an OEM Grant XL @13.8VDC with the mic gain in the fully clockwise position into a 50 ohm load produces 4W of carrier and anywhere from 12 - 18W PEP out of the box, as do most all fcc certified cb radios.