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ANTHF - MFJ-911 4:1 Balun/UNUN The MFJ-911 is a true 4:1 current balun/unun that transforms 200 ohm balanced and unbalanced loads to 50 ohms. The response is almost flat from 160-10M. Change balanced to unbalanced operation with handy ground post from a 4:1 balun to a 4:1 UNUN by adding a jumper from the ground to one of the antenna posts. In the UNUN configuration with a 28 to 30 foot wire attached will provide a 10-40 antenna using a antenna tuner. Two low permeability ferrite cores are used to easily handle 300 Watts. Perfect for POTA/SOTA operations small for portable operations. Just 2½ x 4¾ x 1 inches. $45 shipped USPS USA only. Listing #1745009 by WB7RBN Submitted on 10/03/25 Submitted from IP 38.77.172.81 Click to Contact Back to Previous Page

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