I hope this doesn’t violate BB protocol, but given the interest in adding freq stability to the 9700, I thought this post from the moon-net might be of interest (and I don’t even own a 9700). I expect PA2V can be found on QRZ
73, Craig N6RSX
As earlier announced on here I installed a 49.152 MHz oscillator (PLL) that will lock on 10 MHz into my IC9700. I have tested it for a week now and compared it to my K3 with transverter. My K3 and transverter are locked on 10 MHz too. During the whole week there was no difference in frequency between both setups. The drift problem on the ICOM IC9700 is solved! It is a simple job without really changing the rig hardware. The PLL can be installed into the 9700 but if one want it outside, it is possible too. You need a 10 MHz reference for this mod.
I have made a description but it is a bit too big to post it on here. The file with pictures is 4 MB and available in Dutch and English. It describes the items you need and how to install and setup the rig. Also it refer to the hams and organisations who did a major job on this too. Total investment for this mod will be around €90 depending on shipments costs and eventually import tax.
Hopefully ICOM will finally install this simple solution in future models. After all it is just a solution for a big mistake from their engineers.
73, Peter PA2V