Why do digital radios use more electricity than analogue ones?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific conceptsWhy do digital radios use so much more electricity than analogue ones? We use our two digital radios for about an hour a day each, and need to recharge their batteries once a week. We’ve had several analogue radios over the years and their batteries have lasted for months.Lawrence Greenberg, London N14 Continue reading...