AMRAD suggested microcontroller projects

[Jeff Scaparra]

I watched the video and he has the same general idea but I don't think his
solution is exactly what I want. I have emailed him to learn more and the
big limitations for me right now is that there is no API for integration
into your own software and it is windows only (I need something that will
run in linux). Additionally the switching matrix is only rated for 30v at
1amp which I believe means that this wouldn't be able to handle much more
power than QRP. I want to have different types of switches with beefier
ones for the TX antenna ports and amplification outputs. I also want to
build in 1 or 2 TX/RX switches so I can use different rx antennas and tx
antennas on radios that only have one port. His product comes close but
falls short in some areas that matter to me. I did ask him if he would be
willing to give me all the details I would need to write the software to
make it work in Linux. If people are interested I will keep posting what I
find.

73, Jeff N6SDR


On Tue, May 14, 2013 at 7:29 PM, <wb4jfi at knology.net> wrote:

>   Interesting to note relating to the second item, www.HamRadioNow.tv<http://www.hamradionow.tv/>just highlighted a new product regarding station automation and control.
> See:
> http://www.udcsys.com/hamShackSwitchSTNCTRL.html
>
> I’m sure that this could easily be done with an Arduino as well (grin).
> 73, Terry, WB4JFI
>
>
>  *From:* Jeff Scaparra <jeff at scaparra.com>
> *Sent:* Monday, May 13, 2013 10:47 PM
> *To:* Karl W4KRL <W4KRL at arrl.net>
> *Cc:* tacos AMRAD <tacos at amrad.org>
> *Subject:* Re: AMRAD suggested microcontroller projects
>
>  Two projects that I want to work on that I would find interesting are:
>
> Using Rasp PI/Arduino to control a stepper motor for remotely tuning a
> small magnetic antenna so that after calibration it could use information
> from the radio to always be in tune with no user intervention. This would
> mitigate the number one problem of using a small transmitting loop. That is
> small bandwidth and the constant need to adjust tuning. I don't believe
> this is super novel but I am interested in it none the less.
>
> I want to build a switching station that can switch all of my radios (and
> future radios) with filter banks, preamps, other radios and antennas. I got
> this idea over the last weekend durring the Armed Forces MARS/HAM test
> thing. For the digital work I had my antenna fed into a mini-curcuits
> pre-amp which fed the rx side of a USRP with the LFRX daughter board. From
> there I took 1 MHz of complex IQ samples to my computer where I displayed
> an FFT and waterfall, recorded to disk for replay and analysis later, and
> finally sent the samples back out to the TX side of the USRP for
> transmitting  That then went to my KX3 so that I could use that radio to
> tune around the band (within that 1 MHz on 40 meters) and hear what was
> going on. It was very neat but I had no way to transmit with this set up.
> The ability to switch all of these things on the fly quickly with a
> computer controlled interface would be amazing.
>
> 73 Jeff N6SDR
>
>
> On Mon, May 13, 2013 at 3:13 PM, Karl W4KRL <W4KRL at arrl.net> wrote:
>
>>  Tacoistas,****
>>
>> ****
>>
>> I just posted a list of possible Arduino or other microcontroller
>> projects to the AMRAD website. Please send me your suggestions to add to
>> the list and any details about microcontroller projects you are working on.
>> ****
>>
>> ****
>>
>> http://amrad.org/projects/sbc/?updated****
>>
>> ****
>>
>> 73 Karl W4KRL****
>>
>> ****
>>
>> ****
>>
>> _______________________________________________
>> Tacos mailing list
>> Tacos at amrad.org
>> https://amrad.org/mailman/listinfo/tacos
>>
>>
>
> ------------------------------
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>
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