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Hi back with another question (sorry), I recently bought a minicircuits zhl-1010 amp and when I received it from the surplus supplier I noticed it has a capacitor and resistor wired up to the dc input and some wires and maybe another capacitor or temperature sensor maybe glued to the top as well. It was tested according to the company and working. They aren't shown in any of the minicircuits images or mentioned so maybe someone just needed to adjust input voltage or something? Just thought I would ask before I desoldered for hooking up to bias tee.