Vintage RF Step Attenuator 0-900 MC 75Ω Stock 4121 1-20 dB Inline Coax Cable

Vintage inline RF step attenuator for 75-ohm systems, suitable for TV/cable/RF applications. Visible markings on faceplate: STOCK NO 4121, 0-900 MC, Z=75Ω, with IN and OUT arrows. Six switchable attenuation steps labeled: 1 dB, 2 dB, 3 dB, 6 dB, 10 dB, 20 dB (combinable stepped pad). Construction: brushed metal faceplate with black crinkle-finish metal housing and mounting flanges. Connectors: threaded coax female connectors on each end for inline use (75Ω path). Intended range: 0–900 MC (MHz), consistent with vintage RF/TV service equipment. Brand logo present on faceplate (stylized "T"); specific manufacturer not listed on the unit. Notes: Vintage terminology "MC" appears on the tag; unit is untested and offered as pictured.