April 1, 1930, was an important day in the life of my grandfather Edgar Dunham's radio. That was the day that radios were first counted in the census. Here it is, enumerated with the rest of the family:
On that same day, my grandfather recorded in his diary that he "took Radio Battery over to Geo. Forbes." (I would guess that the radio used a "wet cell" battery that had to be taken to town for recharging periodically.)

George was a young auto mechanic in the nearest village, and (the census shows) lived a few doors down from Edgar's first cousin once removed, Charles A. Dunham. Boarding with Charles on April 1, 1930, was Edgar's girlfriend, Mae Coolidge, who attended the same school where Edgar spent half the day splitting wood.
Edgar and Mae would marry and live happily ever after. Of his radio, no further record has been found, suggesting that—like many people in my genealogical experience—it ceased to exist on April 2, 1930.