Glad you are enjoying the RemoteRig system. I have been a happy customer for several years.
To connect a straight key: I am not sure what manual you are reading, but you need to use the
RemoteRig manual pages 94 and Appendix B through the RRC's IO connector. The connection
on the radio side should use a mono plug if available and go to the TS-480's key jack.
To use digital modes and AFSK, connect the Signalink to the control RRC's MIC/AUX jack instead of the
microphone and take audio off of the SP jack of the control RRC. Make sure you have RTP set to "continuous".
Nothing needs to be done on the radio side (assuming you stick with AFSK and not FSK).
73,
Mitch DJ0QN / K7DX