Anyone can confirm if a signal level of  70~90mVrms  with an Output impedance: 1k§Ù or less Coupling: AC coupling Frequency response: ¡¾2.5dB at 10~3000Hz is enough to drive a URI or should I use the included pre amp in the URI-X?

trying to use the RD line from a tkr-750 to do USBRadio control of a node. 

thanks

And while I am at it, 

pin 10 and 11 of the tkr both are signal input, 10 is TD (tx data) and 11 is TA (tx audio)  If I feed one side of the output to the pin 10 (TD) for tone signal and the other side to (TA) and apply repeated audio would that make sens?

Cause I did try that and It did not seem to work.. 

thanks again for your input

Pierre VE2PF