Thanks guys, GPG, give me a few day s to absorb the material.
Yes, Hop, I built the same transmitter in the early 60"s. I don't remember where I got the schematic. I do remember scrounging parts, and as Colin suggested, I think I just used what ever I could find. I remember the 5R4 rectifier, and a dual 40 ufd can cap. I found a 10 Hy 500mA choke and used it because I wanted good regulation to prevent oscillator chirp when keying. (At least that seemed like a good idea at the time.)
The physical size of the 10 HY 500 mA choke was about that of a pint canning jar.
That 40 meter HB rig is long gone
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I still am interested in calculating values . I've been looking at published designs of various equipment, and the design values are all over the place.so its hard to determine: did they just use what they had, or was there some thought behind the design.
Naturally, regulation, load, ripple, etc. are considerations, but there should be a starting point..