The transitions in the electron capture decay of Yb¹⁶⁹ to TM¹⁶⁹ have been studied by means of an Intermediate-Image Beta- Ray spectrometer to detect internal conversion electrons, and a scintillation detector to study gamma rays. Transition energies of 8.4, 20.8, 63.1, 93.6, 109.8, 118.2, 130.5, 177.2, 198.0, 240.4, 261.0 and 307.7 kev were measured.