Skylark B was a radio communications group that operated in Trondheim during the German occupation of Norway.
Preparations were done in 1940, when a transmitter was brought in from the United Kingdom, and the communications were effective from the end of January to September 1941.
Others managed to flee from the country, among these were Leif Tronstad, Einar Johansen, Bjørn Rørholt and Olav Skeie.
[2] In February 1941, Skylark B reported on German ships in Trøndelag, and on export of iron ore from Narvik.
In May 1941, before the German battleship Bismarck battle, Skylark reported to SIS that three destroyers had arrived in Trondheim.