Initial contact with any Lock is made on Channel 16. Wilson switches to Channel 14 (Primary) or 13 (Secondary). Wheeler switches to Channel 12 (Primary) or 14 (Secondary). Guntersville switches to 14 (Primary) or 13 (Secondary). Each lock may use whatever marine channel the tow crews are on as well.
FYI, Wheeler Lock is in Lauderdale County, two counties west of Morgan County. Guntersville is in Marshall County one county east of south Madison County. Wilson Lock is in Lauderdale County, probably too far west to monitor from Morgan County.
Though TVA owns and maintains the lock facilities, the operation of the lock itself rests with the US Army Corp of Engineers.
Enjoy your trip to North Alabama HH-65!