This is the user manual for a Webcor Tape Recorder. It covers the use for models 2891, 2892, 2811, and 2812. Models 2891 and 2892 had an AM radio built in. To hear it you have to set the Record-Playback control to Stop. Then switch the monitor on, turn the radio on, then tune the station. It's interesting to note that the instructions actually say "Allow a few seconds for the radio to warm up." It's been a long time since any manufacturer felt the need to note that capacitors need time to charge.
I've scanned all 20 pages and made them into a 9MB pdf.
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