On Thu, 18 Nov 2010 10:45:57 -0800, Jim wrote:

I think that you need to ask the author.

Hi Jim,

There are too many indifferent scribblers to merit reading them, much
less entering into a dialog when they already demonstrate a lack of
communication skill. I tried that for years with Art.

Having said that, your suggested link did reveal someone who looked at
the problem carefully and laid out the steps taken to achieve a
result. What was missing was motivation, and a connection to reality
(not being smart-assed, just wondering about the extra components
decorating the schematic is all).

I would say that he used some ideal values as a place to start with.
Kind of a 'what if.'

The "What if" is demonstrated, and it certainly gives scope. However,
ideal circuit values are far from apparent. It is just as easy to use
values any Xtal set owner might find exhibited by his window screen,
as contrasted starting with a full size BCB antenna with an odd
reactive component tossed in for spice (excuse the pun, but it works
at all levels). In other words, it takes absolutely no more effort to
model what one can reasonably expect to find at home, than to go to a
broadcast station and borrow their sky hook (and then antagonize the
Field Engineer by tossing in a haphazard capacitor).

73's
Richard Clark, KB7QHC