KX3 is not activating with the Digirig

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Another user and Denis K0TX went through issues with Elecraft radios and HRD in a step-by-step way:

DigiRig with Elecraft KX3 and Ham Radio Deluxe

My DigiRig mobile is not working well with my Elecraft KX3. The KX3 can transmit PSK-31 automatically or be driven by a computer. The automatic mode works. Using the DR connected to KX3 transmits but the receiver does not decode the message. I tried different bands and configurations. No joy. I am using Ham Radio Deluxe with DR and that does not seem to transmit PSK okay. I receive on an Elecraft KX2, sitting nearby. If KX3 is sending using internal PSK-D option, the KX2 receives it fine. If …

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