Tuners aren't really as hard as you may think. I've been rebuilding old radios for years and have seen sets with as few as four tubes for AM or six or seven transistors for FM that can acheive relatively good fidelity with such a small speaker. The problem that I'm having so far is that all of the circuits I've found on the net are much too simple, one or two transistors, with the ability to possibly pick up one or two strong stations. The closest I've come so far is this circuit, which is interesting, but it uses an obselete IC, model TDA7000, that hasn't been manufactured for years, and none of my suppliers know of a cross-reference for it.
It doesn't have to be ultra hi-fi or super sophisticated, so a schematic from an older (1980s or so) portable could do nicely. I have a book with with about thirty or so designs for FM radios and even more for AM, if only I could find the blasted thing.  What would be ideal would be a small tuner circuit, around four transistors or an IC, which outputs a line-level audio signal, then I could use one of the many small amplifiers I've built over the years to drive the speaker.
I have an excellent AM/FM portable from the 70s (A little rectangular thing made by GE) that plays like a champ and uses eight transistors (and lots of "fun" little trimmers to spend hours playing with). I could probably duplicate it with some effort, but I'd much rather have a schematic to go by. In any case, I hope I can find the book soon.
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Need a Radio Schematic.
What would be ideal would be a small tuner circuit, around four transistors or an IC, which outputs a line-level audio signal, then I could use one of the many small amplifiers I've built over the years to drive the speaker. 
