OOPS...there is a 10MHz input port on the 9700...at least that's what the brochure says. It's directly underneath the LAN port. http://www.icomamerica.com/en/products/amateur/hf/9700/default.aspx Click on product brochure, scroll down to the back panel description. BTW...I picked up this GPS disciplined oscillator and I've used it to calibrate my frequency counter. It will work equally well for the 9700 10MHz reference.