BI4IJT I don't have an 891, but I see that you chose the default sound card. Let's look at this from that angle.
BI1TMQ-AK6MZ BI4IJT The default settings are fine. The spectrum graph looks normal. When I send a message, others can hear it. However, it's not being decoded.
BI1TMQ-AK6MZ BI1JNP I didn't connect them in series. After connecting, all the frequencies were synchronized.
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