Jeff... can you tell me what menu number that is or where to look for instructions to set that up?
ALSO... can you tell me where it is that I can program the 710 so that a simplex freq. can have priority and comes up if I am, at the moment scanning, or any other freq.?
Well, it's been a while since I set mine up, but I found something in the "In-Depth Manual APRS EchoLink.pdf" you can download from their website. It won't let me copy & paste the text, so you can look at page 25, section 18.104.22.168 "Transmitting QSY Information". It essentially says you can put [Freq MHz] in status message #5. You would then select that message to be used for your beacon and you should be good to go.
I have not used any of the scanning functions, so not sure I can help there. I would recommend checking out the various downloadable PDF files they have as they usually have more info that what's in the printed version that came in the box.