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Are there any compatibility issues with the Bendix/King KA-120 DME/GS adapter when interfacing to the KX-125/155/165 Nav/Comms?

April 26, 2017adapter bendix comms compatibility DME GS Interfacing King kx-125 NAV

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Are there any compatibility issues with the Bendix/King KA-120 DME/GS adapter when interfacing to the KX-125/155/165 Nav/Comms?

2 Answers

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Yes. We are recommending that Service bulletin 1 and 2 be complied with on the KA-120 when the adapter is being installed on a new retrofit. Service Bulletin 1 corrects an impedance mismatch between the KA-120 and Gold Crown III control heads. It also corrects impedance mismatch between the KA-120 and new generation KX-155 and KX-165 Nav/Comms that utilize surface mount technology. Service Bulletin 2 corrects a serial tuning buss incompatibility when interfacing the KA-120 with a KX-125 and also incompatibility when interfacing with new generation KX-155 and KX-165 surface mount units. KA-120 with serial number 1845 and above have Service Bulletin 1 incorporated during original manufacturing. KA-120 with serial number 2819 and above have Service Bulletin 2 incorporated during original manufacturing.

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Yes. We are recommending that Service bulletin 1 and 2 be complied with on the KA-120 when the adapter is being installed on a new retrofit. Service Bulletin 1 corrects an impedance mismatch between the KA-120 and Gold Crown III control heads. It also corrects impedance mismatch between the KA-120 and new generation KX-155 and KX-165 Nav/Comms that utilize surface mount technology. Service Bulletin 2 corrects a serial tuning buss incompatibility when interfacing the KA-120 with a KX-125 and also incompatibility when interfacing with new generation KX-155 and KX-165 surface mount units. KA-120 with serial number 1845 and above have Service Bulletin 1 incorporated during original manufacturing. KA-120 with serial number 2819 and above have Service Bulletin 2 incorporated during original manufacturing. The price for Service Bulletin 1 is approximately $250 parts and labor The price for Service Bulletin 2 is approximately $300 parts and labor.