I picked up a very clean and fully functional Heathkit AR 1302 receiver at a sale this weekend. After considerable research, I cannot find a manual (I did find a schematic), unless I part with $40, which will more or less kill the fun of a cheap weekend find. Is anyone familiar with this unit? It has a couple of front panel functions that are foreign to me or don't do what I normally expect. For example, a "tone" button that does not defeat bass/treble, insert filters or adjust phase that I can hear (there is a separate loudness button).
The receiver has adjustable input gain controls for both channels of every input, tape loops a fine tuner (AM and FM) and a number of other features not common in a vintage mid 1970s mid-fi receiver. The distortion spec is .25%, which all adds up to a rather nice piece.
Other than needing a cap or two, I may want to hang onto this receiver for awhile. Does anyone have any knowledge to share?