[Elecraft] H mode mixer

[J F]

Hi Geoff,

It seems strange to me that it lingers more on the
fringes than moving into the mainstream. If it's been
around for 15 or more years, one would think something
could have been negotiated regarding any intellectual
rights.

It certainly sounds interesting based on what I've
read. 'Twould be interesting to see it implemented for
more of a mass market...

Hope you're doing well in loverly France...

Cheers,
Julius
n2wn

--- Geoffrey Mackenzie-Kennedy
<gmk at gm4esd.fsworld.co.uk> wrote:

> Hi Julius,
> 
> It might have something to do with Intellectual
> Title, but not being well 
> versed in such matters I could well be wrong. I have
> read very recently that 
> the H-Mode is being used in a new receiver for
> military use, and I know that 
> Rhode & Schwarz use a very similar mixer in one of
> their "Professional" 
> receivers designed during the mid or late 1990s - I
> would have to look up 
> the model. Perhaps the differences in the R&S mixer
> are sufficient to 
> prevent legal problems. I have asked myself the same
> question as yours 
> because the original H-Mode design appeared at least
> 15 years ago and has 
> been "maturing" ever since, and without any doubt is
> a high class performer.
> 
> In the European amateur press the H-Mode has
> received good coverage which 
> includes the publication of rceiver designs in which
> the mixer is used. The 
> ARRL Hanbook 2001 includes a description of the
> "Triad" receiver, a relative 
> of the receiver in the CDG2000, the latter was
> offered as a kit if memory 
> serves me right.
> 
> 73,
> Geoff
> GM4ESD
> 
> 
> Julius N2WN wrote:
> 
> 
> > Geoff & Gian,
> >
> > To play devil's advocate (I'm decent in this
> role), if
> > the H-mode mixers is as simple and as effective as
> you
> > both suggest. Why hasn't it been more widely
> adopted?
> >
> > For the most part, I've seen a couple mixers
> boards
> > and mostly references to homebrew building, but
> > nothing in the way of kits or commercially offered
> > radios.
> >
> > Considering how difficult the 40M situation is in
> > Europe, and how large the ham population is,
> certainly
> > one would think that someone would have championed
> the
> > technology by now...
> >
> > Any thoughts on this?
> >
> > Cheers,
> >
> > Julius
> > n2wn
> 
> 
>