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27MHz RC no dig. outputs but with telemetry

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This telemetry option consists of two 27RD mini-receiver PCBs without digital outputs and equipped with the AX5043 transceiver IC. One is used ashore and the other in the vessel.

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These receivers have smaller dimensions because they do not have digital outputs.

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The electronic design is such that they can not only receive but also transmit (30mW).  This enables half-duplex communication (i.e. telemetry).

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Both receivers have different software. The receiver PCB ashore acts like a relay station for data going back and forth. The receiver PCB in the vessel behaves more like a controller. Receiving is just one of its function.​​

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Due to the lack of digital outputs only piston tanks are supported.​

Protocol

RD27 mini receiver without digital outputs

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The image below shows the RD27 mini receiver and the auxiliary PCB installed in my model submarine.​

45x83mm

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©2026 Rob Schuckman

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