Home » Bias Tees Test and Measurement Channel Bias Tees January 17, 2011 No Comments General Purpose, High Power and Broadband Models. Bias Tees are used to inject dc + rf in a signal path. Related Articles 50 kHz to 18 GHz Resistive Bias Tee Post a comment to this article Name* E-mail (will not be displayed)* Subject Comment* Report Abusive Comment Thank you for helping us to improve our forums. Is this comment offensive? Please tell us why.