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PCB_E336V02A reference design

We are attempting to implement LoRa in Japan which requires the LBT (listen before talk) feature which requires a FPGA and additional transceiver. As I understand there is a reference design PCB_E336V02A that has this as referenced in the following thread.

I am not able to locate the reference design, how may we acquire the design information?
As Japan is one of the few countries that enforces the LBT feature a LoRa concentrator with the FPGA chip is not very common to come by and are considering producing our own PCB.