Hello;
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