On my Concertone there is a button that says "Mem/[clock]" Actually, [clock] is a picture of an alarm clock. When the unit is on, push and hold that button and it will eventually enter the clock setting mode. I think tuning adjusted the value, and the Mem/[clock] button cycled through the different settings as I recall.
My Concertone seems to loose its memory and time when I disconnect the house battery. I suppose I could leave the battery connected, but if I do it will be dead within a week due to the propane detector and the end result will be the same. it would be an improvement if it had a nine volt battery on board--or non-volatile memory--to save the time and station presets, I agree.
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