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Radio Record, Volume VIII, Issue 29, 25 January 1935, Page 42

° The ordinary "An battery needs recharging about" once every two months whether ‘it is being used or not. If you have not a pipe-cleaner in the house and wish to remove dust from variable condenser vanes, remember that there is much ic be said for a pair of bellows, or even a vacuum cleaner, for this class of work. Never ‘throw away an old shaving brush--it ig invaluable for dusting inside a set, or for cieaning coils, and keeping . similar vomporfents in good condition.