Hello; I'm not sure if this made it to the list yesterday so thought I'd resubmit it. I guess there is to much email at my end. A friend is tuner shopping and supposedly ldg is coming out with a tuner that will work with any kenwood that is or was at300 compatible. In this case, my friend has an old but working ts850. Would the tune button on the radio work with this new tuner? If not what tuners from ldg have worked best? Do they all use relays instead of the old motor system? Can any type of auto band change system be set up with an older radio? Thanks in advance Richard