[Elecraft] KX2 Satellite Derivative? (Was: Re: The KX2)
Kevin Stover
kevin.stover at mediacombb.net
Tue May 24 20:17:35 EDT 2016
I have changed my thinking on this.
My suggestion would be a kick butt single band 6m rig in a K3s box. All
the bells and whistles the K3s has now with the addition of cross band
duplex and 100W any mode no time limit. The other bands would be
installed as transverters in a computer style main board in the rig.
Each transverter would be capable of 50W minimum output, have it's own
SO239/N connector. The current K3EXTREF would be standard for 10MHz
reference, as well as a 0.5 ppm TCXO along with RX I/Q out ala KX3. A
V/UHF version of the P3 would have to be offered for the computer averse
among us.
Call it the K3s SAT+.
On 5/24/2016 6:44 PM, Kevin Stover wrote:
> I like it!
> Especially the laptop style dock.
>
> On 5/24/2016 4:33 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:
>> dubususa at gmail.com
>>
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>>
>
>
--
R. Kevin Stover
AC0H
ARRL
FISTS #11993
SKCC #215
NAQCC #3441
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