She began quietly visiting Gobeaux's house in Rue de la Fère, letting herself in with her own key during the day, placing her set on a small table and passing the long aerial out through the window above. Interviewed after the war, Gobeaux remembered Beekman often waiting for the next transmission, lying on a divan with her head in a book, apparently unruffled by the possibility of arrest. Although many operators took the precaution of travelling with one or more bodyguards, she worked alone, which was undoubtedly a sign of her courage; Eugène Cordelette, one of MUSICIAN's lieutenants, later described Bieler and Beekman as being "both of the finest stuff imaginable", but her training should have left her more mindful of security. Following her instructions from London, Beekman transmitted using a pre‐arranged schedule (or "sked"), sending messages at specific times and frequencies three times a week. This was standard practice for SOE wireless operators in France, though most would try and set up several sets at different safe houses, switching between them to avoid detection (some safety improvements such as more flexible transmission skeds were introduced only after Beekman was sent to France). Operating from a single static radio post greatly increased the chances of being hunted down by German direction finding (D/F) teams, which were known to prowl the streets of major towns and cities across the country, and it's not clear why Beekman apparently didn't use additional hideouts – perhaps it was too difficult to find suitable locations in such a densely populated area, or she might have had technical problems with the wireless sets available. Beekman's steadfast and fearless approach had proved invaluable to the circuit, but her work was becoming riskier every day. German interception of radio signals had become very efficient by this time, and the regular times of her transmissions was helping her pursuers to gradually narrow down the area of the source. Beekman and Bieler spent Christmas Eve at the Bourys' house; they listened to the BBC and did their best to be festive. On Christmas Day she made contact with London as usual, but the following week a direction finding van was seen passing the house, an ominous sign that the net was closing in. She moved her set to the Boury house, where she was still living, but on 12 January Camille Boury noticed a man walking along the street, with his collar turned up and apparently listening to earphones.