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The VATTENPDC GPS RF Active Variable Attenuator a one input, one output device with variable
attenuation range from 1dB to 25dB, user selected.
This Variable Attenuator Pass DC (VATTENPDC) is a one input, one output attenuator that operates with a variable attenuation range that can be user selected via a potentiometer control. This unit provides between 3 – 30dB (typical) of attenuation in a miniaturized housing. The frequency response covers the GPS L1/L2 and GLONASS bands with excellent flatness. In the normal configuration, the RF output (J1) passes DC from the connected GPS receiver through the attenuator to the antenna, allowing the GPS receiver to power both the antenna and the attenuator.
Note: Previous versions of this product featured an internal potentiometer which was accessed via a hole in the lid. To adjust these older units, remove the red hole-plug and use a small flathead screwdriver to adjust the internal potentiometer until the desired attenuation is achieved.
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