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Oct 28, 2019, 08:36 PM
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how to properly set up the 900mhz backup?

i have set up an R3-900 as a backup to an REX-12. both rx's are updated to 1.12.
I have to set the R3-900 to PPM output and the REX-12 to PPM input to get it to work.
According to the 1.12 firmware notes there should be an EX Bus input/backup option. where am i missing this?
Thanks for the help!
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