Hestia would've volunteered to help with the radio, as long as she didn't have to speak. She also would've suggested that they cover the same kinds of things that she suggested for the newsletter/pamphlets, such as whatever they hear through the listening devices, etc.; and she would've suggested that they maybe use one method or the other as a way of informing people of places where they're safe in England, if they can't get out of the country for whatever reason.