Ed, re "Who will build it?": It seems the market
must be large enough to justify the investment. I
wonder if it really is?
73, Phil W7OX
On 5/24/16 2:33 PM, Edward R Cole wrote:
I replied in depth to Barry but let me share
that more briefly with the List:
My vision for a "KXV3sat" would be based on a
50-MHz direct conversion SDR (if that is
practical at this time).
That would establish the IF for other bands
which would be accomplished with transverters.
HF would be unnecessary and just take up
valuable real estate inside the radio.
To keep a KX3 sized concept power would likely
be held to 10w on 2m and 70cm. The radio would
have IQ baseband access for running other sw on
external computers. Similar I/F for Line in
audio and computer PTT would enable use of sw
other than the internal DSP. SDR means any
number of modes could be accommodated. Stable
LO would be required for NB digital modes and
use with mw. Full cross-band duplex plus
computer tuning of both VFO's to enable
satellite auto-tune from external sw. BNC would
suffice for ANT connections since power is low.
Battery operation (option).
An option would be a K3 sized transverter
housing which modules for 222, 432, 902, and 1.2
GHz that could be added making a complete
50-1296 package, or just what you want. The
KXV3sat would dock to this "console" for 'no
external interconnect' wiring package. Probably
modules would be 10w or maybe 25w. If enough
room, 60-80w PA boards might be included for
6m/2m/70cm. Though there are ext. PA's
available from the ham community.
Keeping the power down in the KXV3sat would make
it usable for portable operating and keep it
light. Also 100w linears would likely add $300
per band to the total price.
Design considerations would emcompass VHF/UHF
SSB/CW/FM plus digital modes. Interconnection
for ext amps, ext freq. source, ext computer
I/F, Panadaptor. One could operate satellite in
full-duplex and operating eme/ms/weak-signal
modes. Perhaps optional Rx antenna ports could
be incorporated as options.
My belief there is a large market for such a
radio. Satellite population is on the rise, so
is small-scale eme. VHF/eme Dxpeditions are on
the rise for which a small footprint is
desirable for airline baggage.
Who will build it?
73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubus...@gmail.com
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