[Skimmertalk] Red Pitaya set up with N6TV's instructions

N4ZR n4zr at comcast.net
Wed Oct 4 21:51:26 EDT 2017

We're with you 100 percent, Wes. I have just finished evaluating an RP 
with the input transformer (actually home-brew but the same 14:1 
transformer) and see virtually identical performance to that of the 
QS1R. My test unit, with the plastic case and a 25mm cooling fan, never 
exceeds 58C.  I feel no trepidation about saying we'll use the RP in the 
gap-filling program, with plastic case and cooling fanas Wes suggests.

In fact, the one I'm testing here will probably go to the next 
gap-filling location.  We're still looking for a site in West Africa.

73, Pete N4ZR
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On 10/4/2017 2:30 PM, Wes Cosand wrote:
> Just a note to say that I received a RP board and got it going in a couple
> days using N6TV's excellent instructions.
> http://hamsci.org/n6tv-red-pitaya-combine-cw-rtty-skimmer-hdsdr
> I can remember the frustration every time I tried to work in a different
> biochemistry lab -- the frustration of being a true "newbie" and *everybody
> *knowing more than you do.  *"I can't even find the pipette drawer!*"  That
> frustration came back this week trying to get the RP going and you will
> probably experience it also.  But don't fear.  Bob's instructions will
> guide you through it -- just takes some time.
> Just as Bob warns, cooling is an issue.  I don't have the plastic case --
> just the aluminum one where the entire case tries to be a heat sink.  But I
> stuck an old CPU cooling fan on top and it is running at about 44 degrees
> C.  With a frequency correction factor of "1" I am getting the same
> frequencies as on the gps-disciplined QS1R on all the HF bands.
> If we use this board for any RBN gap filling I would suggest that we
> install the necessary software on the SD card and ship it with some kind of
> cooling solution.
> Wes WZ7I
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