Hello Austin,
Saturday, May 22, 2021, 1:39:38 PM, you wrote:
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My settings are as follows:

Rig: Yaesu FT450
Serial Port: /dev/tty.SLAB_USBtoUART
Baud: 38400
Data Bits: 8
Stop Bits: 1
Handshake: Default
PTT: CAT
Mode: Data/Pkt
Split: None

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Hi Austin.
I also have an active FT450 working with wsjtx

though I am using FLRig as "Radio" in the WSJTx settings ....

My settings are RTS not CAT, as the FT450 seems to like RTS

And I have Data/Pkt as-well-as Fake-It for the split.

Am also using the SCU-17 happily with the FT-450.

I just tested a few QRG changes inside the WSJTx pull-down and didn't see any jump from A->B->A

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Best regards,
Bob KD7YZ



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Bob KD7YZ in NE Kentucky