Fig. 6.
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SED of NGC 3894 (ILTJ114850.36+592456.2), which is an example of a source with a convex SED. Such an SED might be caused by multiple epochs of activity. Additional high-frequency measurements were added; a 5 Ghz NRAO 300-ft telescope measurement (Sramek 1975), a 10.45 GHz 100 m Effelsberg telescope measurement (Pasetto et al. 2016), and two VLBI measurements at 8 GHz and 415 GHz (Tremblay et al. 2016).
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