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Raptor S-tower F4 spektrum can't get bind mode

Garrisonr

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Feb 3, 2019
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Can't get satellite spektrum into bind mode

Apologies in advance and I've done hours of research with no avail.

quad: arris 220 standard (1st fpv went cheap-o till I build )
flycolor raptor s-tower f4
omnibusf4sd // Betaflight 10.4.1
Spektrum spm4648 satellite
DX8 G2

I set serial RX of UART3 to on (3.3v power & "spektrum" ready port)
receiver mode: serial based receiver (speksat, sbus, sumd)
serial receiver provider: spectrum 2048

Issue: After I do the set spektrum_sat_bind= 9 command I plug and unplug the usb back in, receiver should go into bind mode and start blinking. Instead my receiver blinks once or twice and goes blank.
From what can tell I should be able to plug n play receiver but maybe I need to use 3.3 power from current port and signal from sbus?

I've tried:
spektrum_sat_bind= 5
spektrum_sat_bind= 7
serial receiver provider: spectrum 1024
several firmwares from OMNIBUSF4SD 3.1.7 to current firmware of OMNIBUSF4SD 3.5.5

I can post pics of flight controller diagram or video of problem.
Thanks in advance for any help!
 

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