Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)The note presents an output feedback control strategy for Markov jump linear systems with no mode observation. Based on minimizing a finite-time quadratic cost, we derive an algorithm that generates output feedback gains that satisfy a necessary optimality condition. These gains can be computed off-line relying only on the initial condition of the system. This result expands a previous one from the literature that considered state-feedback only. To illustrate the usefulness of the approach, real-time laboratory experiments were performed to control an automotive electronic throttle valve subject to Markov-driven voltage fluctuations. Copyright (c) 2015 John Wiley & Sons, Ltd.26919801993Brazilian agency FAPESP [03/06736-7, 04/06947-0, 2011/13888-4]Brazilian agency CNPq [306466/2010-4, 304856/2007-0, 471557/2009-9, 305008/2010-2, 479673/2011-0]Spanish Ministry of Economy and Competitiveness [DPI2012-32375, DPI2012-32375/FEDER]CICYT-Spain [DPI2011-25822]Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)