The KI-209A is similar to King's standard KI-209 VOR/LOC/Glideslope Indicator, but with an important twist. The KI-209A can also be used with a GPS.

Every VOR/LOC system needs to have a VOR/LOC converter between the NAV and the Indicator. While needed for VOR/LOC use, if this converter is internal to the Indicator, that Indicator cannot be used with a GPS. The KI-209A is special because it contains a relay that can switch the VOR/LOC converter out of the signal path. With the converter out of the way in GPS Mode, the KI-209A may be used with GPS guidance.

The KI-209A, together with an Annunciator Control Unit (ACU), can be used to meet the FAA requirements for an IFR GPS installation.

The KI-209A uses pendulum meter movements. Due to the extra capability offered by the KI-209A, it uses a different connector than the KI-208 and KI-209.

The King KI-209A's features include:

• Built-in VOR/LOC converter
• Plastic bezel and lens
• Internal lighting

The King KI-209A may be used with the following equipment:

• GPS - The KI-209A will work with almost any GPS except the KLN-90 family (due to resolver incompatibility)
• KX-155 NAV/COMM (with Glideslope) - 14V or 28V
• KX-155A (with Glideslope), 28 V only
• KN-53 NAV Receiver (with Glideslope)

The KI-209A may be used with the following NAV/COMM radios, paired with the remotely-mounted KN-75 Glideslope Receiver.

• KX-170B NAV/COMM
• KX-175B NAV/COMM

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