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V1 attenuator & controller
V1 preamp controller
A DIY preamp controller/attenuator The LDR3x (aka the “V1”) is a preamp controller in the form of a partially populated...
IO3 relay board
An IO board for the LDR3x (V1) The IO3 (input/output) Relay Board can be interfaced with the LDR3x Preamp Controller...