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https://www.instockwireless.com/index.php/bias-tee-bnc-female-bt4520.htm BT4520 Bias Tee, High Isolation, 10 MHz to 4 GHz, BNC-jack, 1.5 Amps - INSTOCK Wireless INSTOCK Wireless BT4520, high isolation bias tee with BNC female (jack), 50 ohm coaxial connectors, 10 MHz - 4 GHz, 1.5 Amps, RoHS Compliant, Used to inject DC...