UA864US Antenna - Does it require 12Vdc bias to operate?

FAQ #4343 Updated March 11, 2015

Question:

Will the UA864US antenna operate if 12Vdc bias is not supplied?

Answer:

The UA864 antenna will work without 12V dc bias in the 0, -10, and -20 switch positions; note that the LED gain setting indicators will not illuminate.

12Vdc bias is required for the +10 dB setting.

Recommended practice is to provide 12Vdc bias as this enables the UA864 LED indicators.

Upon installation, set the gain to - 20.  If the system works properly, leave at this setting. Too little gain is better than too much gain.

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