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I've seen this *connector on various rf amplifiers and the like, it's an insulated center pin and a grounded chassis (this one has a tab on the connector)

What is the recommended way to connect to this? I can easily 'make' something work, but I'd rather use it the way it's designed to be used.Bias Tee Power Injector

*Not the SMA connectors

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    \$\begingroup\$ It’s not a connector but a feed through capacitor. The intention is to solder a wire to it. \$\endgroup\$
    – Kartman
    Commented Dec 7, 2021 at 1:27
  • \$\begingroup\$ What does the module specification tell you about that connector. Clearly if it's some cheap s41t off peebay then you won't get an answer. \$\endgroup\$
    – Andy aka
    Commented Dec 7, 2021 at 10:47

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That is not a connector. That is a feed-through capacitor. The long lead you see coming out of is is simply its terminal. It is intended for soldering to a wire. As it is a "permanent" connection, that is not a connector. Solder a red wire to that lead, and a black wire to the solder lug as the base of the feed-through capacitor. Then apply the voltage to those two wires, positive on the red wire. (How much voltage, I don't know.)

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