A good friend was given a TM-2570 and we have added the TU-7 tone board. All is ok except I don't know how to enter a VFO programmed frequency into a memory channel. Any other tips would be appreciated since we have no owners manual. $16.00-$25.00 if bought online. Please help if possible. I don't understand most of the function buttons on the face of the radio. Please understand, I don't want the manual, only memory programming tips Thanx.