Davtron Model 903-1 DVOR With LOC Bar (Front Mount) M903-1

The Davtron M903-1 is a front-mount digital VOR indicator with an integrated localizer deviation bar. Designed as a compact navigation display, it provides digital radial indication and automatically selects VOR or localizer operation from the received signal.

The unit features automatic VOR position orientation, instant To/From switching, digital filtering and signal processing, automatic display dimming, and a sunlight-readable display. A serial ASCII output is provided for station and radial off-flag status.

• Manufacturer part number: M903-1
• Configuration: front mount
• Function: digital VOR indication with localizer deviation and centreline display
• Input voltage: 14–28 V
• Input signal: 0.35–10 V
• Supply current: 0.3 A
• Operating temperature: -20 °C to +55 °C
• Published DVOR accuracy: ±2°
• FAA-PMA approval: PQ1062NM

Please confirm installation configuration, electrical connections, applicable approval basis, and aircraft eligibility using current approved maintenance and installation data before purchase or installation.