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Please keep me in the loop for eval PCBs. I have 2 of the PNI
magnetometer PCBs in hand and hope to be able to evaluate them
through the TangerineSDR mag prototype. As I have mentioned, I do
have a Bartington flux-gate magnetometer to compare to and have
access to a set of Helmholz coils that can be used for calibration
and test.<br>
<br>
I am at Dartmouth, but my home address as shown on QRZ is best for
shipping.<br>
<br>
73,<br>
<br>
David N1HAC<br>
<br>
<div class="moz-cite-prefix">On 2/13/20 11:02 AM, David Witten via
TangerineSDR wrote:<br>
</div>
<blockquote type="cite" cite="mid:CABJ3BVNw2xY5Yu21jF3bAZ7pB9LaKYw8P+GEdbXOJD71VWtU6A@mail.gmail.com">
<div dir="ltr">Tentative Result - info only
<div>=====================</div>
<div><br>
</div>
<div>At long last it *appears* that I have a working pair of
full magnetometer support boards that function as expected
over shielded twisted pair and powered from the local Odroid
N2 supply. </div>
<div><br>
</div>
<div>I believe the distance is 30 m, but it is coiled so need to
measure. No investigation yet of reliability, but the final
proof of concept seems to be in hand.</div>
<div><br>
</div>
<div>At least one more spin of the prototype boards is
necessary, as agreement on power derived from the so-called
'PMOD' connector has never been resolved. </div>
<div><br>
</div>
<div>This pair stays with me for further testing - evaluation
sets will come later for VERY selected testers. These take me
about a week to assemble (pair) all together.</div>
<div><br>
</div>
<div>Dave Witten KD0EAG</div>
</div>
<br>
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