Please use the free guest parking spaces immediately in front of the main entrance. There is a railway station within 10 minutes walk from Radio Netherlands. At Weesp, take the train for Hilversum which leaves from the adjacent platform. The station before Hilversum Noord is called Bussum Zuid. Journey time from Amsterdam is 31 minutes.
Dutch railways offers an online timetable service in English.
On arrival at Hilversum Noord, you'll see a main road which runs parallel with the railway tracks. On leaving the railway station, turn right and follow the footpath on the main road. Unless it is very misty, you will see a huge PTT telecommunications tower in front of you. You will pass TV studios on your left. After a 10 minute walk, you'll come to a set of traffic lights.