Hi Rob, and thanks for your reply.

I believe it was an inductor because it was an axial-lead component resembling a resistor (epoxy painted, with color code bands), except that the color of the base paint was bright neon green, rather than tan.

It was soldered directly to the center terminal of the BNC, and on the other end, to the PCB.

When the scanner stopped receiving, I opened the unit and found the component had separated, with the paint in bits scattered about and unreadable.

It did have a bit of fine wire in it. Unfortunately, after I de-soldered the remains, I lost them. I have done quite a lot of searching on the internet, as well as within this forum. As yet, I have been unsuccessful. I believe the unit was fairly popular, so I'm surprised that a schematic for it is so elusive.