Defeating 12 vdc bias on UR4 receiver antenna inputs

FAQ #3231 Updated February 02, 2012

Question:

How do I remove the 12 vdc bias on the UR4 receiver antenna inputs?

Answer:

  1. Disconnect the UR4 receiver from its AC power source.
  2. Remove the top panel of the UR4 receiver.
  3. Move the two "ANT PWR" jumpers to the "off" position. These jumpers are near the front of the UR4.
  4. Replace the top panel of the UR4 receiver.

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