We discuss the prospects for detecting faint intermediate-mass black holes,such as those predicted to exist in the cores of globular clusters and dwarfspheroidal galaxies. We briefly summarize the difficulties of stellar dynamicalsearches, then show that recently discovered relations between black hole mass,X-ray luminosity and radio luminosity imply that in most cases, these blackholes should be more easily detected in the radio than in the X-rays. Finally,we show upper limits from some radio observations of globular clusters, anddiscuss the possibility that the radio source in the core of the Ursa Minordwarf spheroidal galaxy might be a $\sim 10,000-100,000 M_\odot$ black hole.
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