Sorry for a bit OT. Before I waste my time advertising on the test-equip-trader; would anyone be interested in waveguide items? WR90 (10GHz), some lower frequency, some higher (25GHz? I will have to measure them. Power splitters, low pass filters, -20 dB pickoff, all waveguide. Several boxes with microwave sources and other components, one has 3ft of flexible waveguide, see below. I will catalog them in a pdf. This item looks like a launcher but the BNC says it is not and is probably a diode detector. It is a PRD 643-A? does anyone have a catalog to identify it? I have several and another for higher frequ. Please contact me off line unless you think it would be of interest to this group.? ?