[Elecraft] Understanding the KX3 Block Diagram - SDR!

[Guy Olinger K2AV]

Dick Tracy 2 way wrist TV, all band (really) ham transceiver and word
processor.  All voice controlled.  All modes of operation.  Remote devices
of any kind via wifi or cellphone connections.  Any and all modes of 2 way
voice and data operation for commercial, police work with proper license.
 Automatic background upgrades to all firmware.  27 terabytes of onboard
memory.

0.6 ounces without wristband.  38 hour solar charged battery.  Internet
connection to remote QRO station anywhere in the world, or to any number of
central communications switching systems.

Optional satellite interface for use ANYWHERE.

Optional 3D lens auto-focusing presentation with any degree of opacity,
including legal night-driving presentation of maps and location data.
 Optional avionics packaging, including realistic full 3D flight simulator,
and Bikeways presentations for exercise.  Very high end embedding in
prescription contact lenses for an appropriate cost.

Retransmission of physical visual for "over the shoulder" participation in
tasks and sports.

Brought to you by Elecraft.

On Wed, Mar 7, 2012 at 11:44 PM, Mike Morrow <kk5f at earthlink.net> wrote:

> Mike wrote:
>
> > First, have you used a direct conversion receiver?...
> > Now add that back end you mention. There is so much "magic" that can be
> > done there. Of course, its not really magic. Its digital signal
> processing.
> > ...
> > Bottom line, its a very sound way to implement a rig these days.
>
> This is a little off-topic for the Elecraft list, but with respect to SDR
> technology mentioned above, it's very interesting (to me, anyway) that a
> Chinese 2m/70cm FCC part 90 HT (Baofeng UV-3R) has been available for a
> year
> that is implemented using SDR technology through a RDA1846 chip.  The very
> interesting data sheet showing the I/Q and DSP components of the chip is
> at http://versatechmicro.com/file/RDA1846_datasheet_v1.2e.pdf .
>
> How much are these pioneering SDR HTs?  They're all over the hamfest
> circuit
> for $50 to $60, or from China direct for much less.  Ignoring the various
> issues with this low cost and not-quite ham gear, I am amazed at finding
> full
> SDR technology now appearing within **very very inexpensive** radio gear.
>
> Doubtless, SDR is the future of radio electronics.
>
> 73,
> Mike / KK5F
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