|AV-Mag external magnetometer is a 3-axis electronic compass. AV-Mag precisely measures the earth’s magnetic field and aids the AV-30 directional heading measurement, improving long-term accuracy and consistency. One AV-Mag can support multiple AV-30 displays.
Works good so far. Mounted in right wing tip of C172. Installation and calibration went smooth. I will give it five stars if it continues to perform well.
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The installation instructions are under the documents tab on the AV-30-c page.
See pages 46-58 of the of the linked Install Instructions in the Documents section for the AV-Mag install details.
Yes, the AV-MAG can support up to 5 AV-30s.