Red Pitaya SDR update

[Martin]

There's more discussion on the clock starting here:
http://forum.redpitaya.com/viewtopic.php?f=11&t=265&start=60#p3062

I hope we can find an off the shelf metal case that we can stuff everything
into.  I'm using their plastic case with a little 5V fan on the Zynq
module.  The whine is driving me crazy.

On Wed, Nov 11, 2015 at 5:30 PM, Jeff Scaparra <jeff at scaparra.com> wrote:

> Looks like we can utilize an external clock but it wouldn't be 10MHz.
>
> http://wiki.redpitaya.com/index.php?title=External_ADC_clock
> http://forum.redpitaya.com/viewtopic.php?f=9&t=17
>
> On Wed, Nov 11, 2015 at 7:20 PM, Jeff Scaparra <jeff at scaparra.com> wrote:
>
>> Has anyone evaluated the clock on the RP or used it for JT65? Is it good
>> enough? Is there a way to provide a 10MHz reference that is common on some
>> other radios? I always wanted a good reason to build a rubidium clock
>> source. :) I do believe the Red Pitaya will be a better radio. 14 bit ADCs
>> and Direct Sampling should be able to have better dynamic range and less
>> noise. Some shielding will be needed for the Red Pitaya as I get much
>> better results with a metal cover over it (probably just picking up noise
>> in my "shack").
>>
>> On Wed, Nov 11, 2015 at 2:50 PM, Terry N4TLF <n4tlf at wb4jfi.com> wrote:
>>
>>> I am definitely interested Martin.  After I straighten out a few things,
>>> I can do both the LF and RP.  Right now, I have so many different versions
>>> of PowerSDR and Quisk on so many computers, it’s hard to keep track!
>>>
>>> I am glad that you are taking charge of this!  The Red Pitaya is
>>> definitely a wonderful SDR platform.  I wish the HPSDR guys would get more
>>> interested in it, as I think the RP platform would be better than the
>>> present Hermes Lite.  Of course, the RP costs a little more, but look at
>>> what the hardware can do!
>>> 73, Terry, N4TLF
>>>
>>>
>>> *From:* Martin <dcmk1mr2 at gmail.com>
>>> *Sent:* Wednesday, November 11, 2015 1:35 PM
>>> *To:* Tacos <tacos at amrad.org>
>>> *Subject:* Red Pitaya SDR update
>>>
>>> Thanks to Pavel Demin, the Red Pitaya now has a couple of SD card images
>>> to support a wide array of interesting and useful software.
>>>
>>> There's a dual receiver single transmitter
>>> <http://pavel-demin.github.io/red-pitaya-notes/sdr-transceiver-hpsdr/>
>>> configuration that acts like a HPSDR network interface with dual receivers
>>> and a transmitter.  This opens up the possibility of using PowerSDR, Quisk,
>>> an Android app or other software.  It seems like diversity reception works
>>> in PowerSDR.
>>>
>>> I'd like help design and build the rest of the stuff it takes to turn
>>> the RP into a robust, portable transceiver.  I've never done this before
>>> and hope there's others on this list who would be interested in joining
>>> me.  We have some great resources in the club although I know everyone is
>>> time constrained.  I'm willing to commit significant time and effort to the
>>> project.
>>>
>>> I realize there's time sensitive work going on in the AMRAD Low
>>> Frequency world. That said, I'd like to propose this as a AMRAD project to
>>> follow on the Charleston receiver as time permits.  As most of the digital
>>> heavy lifting has been done it's mostly a matter of building the analog
>>> transmit/receive chain and ancillary stuff.
>>>
>>> Terry N4TLF has done testing on the RP LF performance and found it too
>>> noisy to be useful but perhaps there's a fix.
>>>
>>> The Red Pitaya <http://store.redpitaya.com/red-pitaya-board.html> is
>>> now $238 so an affordable, complete HF SDR transceiver should be possible.
>>>
>>> This could be a great project for the club that hopefully attracts
>>> interest and new members.
>>>
>>> So - anyone else in?  What do you think?
>>>
>>> 73 Martin W6MRR.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> ------------------------------
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>>> https://lists.amrad.org/mailman/listinfo/tacos
>>>
>>>
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>>>
>>>
>>
>
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