Time evolution of the GRS 1758−258 extended radio jets as observed with the VLA interferometer at the 6 cm wavelength (4.8 GHz) over sixteen years (1992–2008) with nearly identical angular resolution. North is up and east to the left. The horizontal bar at the bottom right corner shows the angular scale. The interferometric synthesized beam is 10.̋50 × 4.̋75, with position angle of 10° (bottom left ellipse). The vertical colour bar provides a linear brightness scale in units of μJy beam^-1. The rms background noise is 10, 10, 19 and 8 μJy beam^-1 for the 1992 to 2008 frames, respectively. The two variable point sources are the GRS 1758−258 central core and an unrelated object about 25′′ to the east of it.