[Jeffhs]

I have a Sony TFM-7720W AM/FM portable radio that I found in a dumpster, while I was helping my dad's third wife clean out his house so she could sell it. (My dad passed away from lung cancer in March 1998, almost 12 years ago.) The radio worked, and well. It was made in 1973, so I have every reason to believe it is a genuine Sony. I also inherited my dad's Sony MR-9700W AM/FM/stereo-FM 17-transistor portable from the same year, which still works but doesn't get much use these days. That radio, too, is a genuine Sony. Both radios are in my bedroom, on my dresser, along with a Zenith C845, Zenith H480, et al.

BTW, does anyone here know anything about the Sony TFM-7720W radio? I've been looking everywhere on the Internet for a schematic, owners manual, anything at all, for mine, but to date I haven't found a bit of info on this excellent portable. I'd guess it has at least eleven transistors, maybe a tuned RF stage on AM as well as FM, all the trimmings, as this set looks like it must have been fairly high-end when it was new. The dial scale stretches the entire width of the radio (about nine inches), which is why I think this set must have fairly high-performance signal circuits--not unlike my Zenith R-70 portable, which has two IF stages on AM, four IFs on FM, ceramic filters on both bands and push-pull audio. That set must have cost quite a bit when it was new in 1980; I got it on eBay a few years ago for, IIRC, $24.95 or so.

Thanks in advance.