Type IIa SRV event of 1983 in 0742+103 and OJ 287 (left and right panel, respectively). The event is stronger at 8 (red dots) than at 2 GHz (black dots) and even stronger at 14.5 GHz (magenta dots, from the UMRAO archive). We note that there is excellent agreement between GBI and UMRAO 8 GHz data (green dots). Turquoise lines mark the times of minimum solar elongation for the two sources, while orange lines indicate the beginning and end of the events.