This Collins 75A-4 ham band receiver is part of a set of 'Gold Dust Twins', where it is paired with a KWS-1 transmitter and 428A-1 power supply (they are both waiting for attention). This receiver is in almost mint cosmetic condition, but required the usual recapping and cleaning of controls after almost 70 years since it left the Collins factory. The owner suppied a capacitor kit purchased from Nationwide Radio & Eqt. Sales (Mark Olson), comprising a multi-section can electrolytic, 2 tubular electrolytics, 17 plastic film, and 6 silver mica capacitors (ones known to fail in the 75A-4) - these are all high quality parts. I also did some cosmetic work, replaced the line cord and line suppressor capacitors, and re-strung the band change cord. This video is part of the initial function checks - a problem was identified on the 11M band (26.5 - 27.5MHz) that will require troubleshooting (I did check to see if the 1st local oscillator was working at the frequency - a 29MHz crystal - and it was not, so possibly a faulty crystal or coil on this band. I also briefly checked the receiver sensitivity on the 20M ham band after this video was made, using an HP8640B signal generator, and found that a 0.1uV CW signal could be discerned.