Did you try the F701C instructions on this forum? https://stereo2go.com/forums/threads/change-wm-f701c-tuner-region.3946/#post-38961
Hi @Emiel, Yes I did try that and it worked to change the band frequency. But it wasn't permanent change and later reverted back to Japanese frequency again. Do I need to install the coin size battery in the cassette tray compartment which houses the FM circuit to retain these FM frequency settings?.
I have the F702 too. Allow me to check the frequency range and confirm your findings @rahul_unde this weekend!
