On 26/07/2017 21:30, David Wade wrote:
On 26/07/2017 18:33, Michael Black wrote:
On Wed, 26 Jul 2017, Gareth's Downstairs Computer wrote:

Intrigued by the possibility of Binaural reception,
snip

There was a guy with a last name of Hildreth who wrote a number of
articles on this sort of thing in Ham Radio magazine in the seventies.
Used active filters, but he also did some other things.

Receivers with phasing adapters could be modified so you could listen
to one sideband in one ear, and the other sideband in the other ear,
that apparently gave some interesting effects.

They guy who's written a lot in recent times in QST about the phasing
method, a string of projects, one was in effect a phasing receiver
except no audio phasing network. So he had two mixers, fed from an
oscillator with quadrature output, and then each of the mixers fed one
of side of stereo headphones. That apparently gave some nice depth
effect.

Michael

Also discussed in Pat Hawkers Technical Topics column, long ago, whe I
was a G8..
Dave
G4UGM

Around 1979 IIRC. There was a simple circuit using passive components in
a highpass/lowpass config to drive a pair of headphones. It worked well
for me with CW.

--
Mouse.
Where Morse meets House.