"Peter Able" stuck@home wrote in message
o.uk...
"gareth" wrote in message
...
"Peter" wrote in message
...
On Sat, 24 Aug 2013 21:06:59 +0100, "gareth"
wrote:
I wonder if some more experienced and senior (in the literal sense)
amateur
could explain to me one difficulty that I have in understanding single
signal
reception with the crystal phasing control?
AIUI, the phasing control is adjusted so that the frequency that would
give
the audio image is phased out by being in the notch.
If that is true, how is it then possible to adjust the BFO to a
pleasant-for-you tone,
because such adjustment will alter the CIO frequency?
Surely the BFO has to be set in advance to be halfway between the serial
resonant
frequency and the notchable parallel resonant frequency?
This is a query stimulated by my current project which is to build a
boatanchor style
RX, with a flywheel-loaded slide rule dial like that of the Eddystone
EA12
The filter is operating on the incoming signal. The BFO frequency is
applied to the output of the filter.
Thanks, but I think that you may have missed the point.
IMHO, Peter's reply is the correct opening statement of a response to your
rather unstructured question. If you cannot then use this statement to
seed and to refine your own thought process, it might be more helpful if
you elaborated the point that you think he is missing.

Thanks. but the subject matter seems to have WHOOSHED over your head.