25:1 to 81:1 Baluns/Ununs These baluns and ununs can be used for impedance matching and also as End Fed halfwave antenna matching transformers to 50 or 75 ohm coax cable. Privacy noticeWe use cookies and similar technologies to remember your preferences, measure effectiveness of our campaigns, and analyze depersonalized data to improve performance of our site. By choosing “Accept”, you consent to the use of all the cookies. To set up your cookie preferences, click “Cookie Settings”. You can change your cookie preferences anytime in My Account → Cookie consent or at the bottom of the site.Learn more in our Privacy Policy.Learn more about us.AcceptDeclineCookie Settings