Ericsson radar system PS890

                                        These pictures were taken a Malmen (1997) and
                                        Uppsala (Air Show 2001).

                                        In 1990 SwedishAir Forces bought one SAAB 340B, to
                                        be used as VIP transport, designed TP100. Few years
                                        later, was decided to use the same airframe to bring radar
                                        for air defense. Swedish Air Force has ordered six of this
                                        very effective aircrafts, four of which will be equipped
                                        with radar.

                                        More links:  1, 2, 3, Google query

Slightly blurred but  interesting for the general arrangement.