[TangerineSDR] Magnetometer Status 2020-02-13

Dr. Nathaniel A. Frissell Ph.D. nathaniel.frissell at scranton.edu
Sat Apr 18 07:30:25 EDT 2020

Thank you, David. We will do that.

Dave Witten, Scotty, and Hyomin, I think we should make sure Dave McGaw gets access to some of these to test, especially since he has access to testing facilities and significant experience in this area.

73 de Nathaniel W2NAF

Dr. Nathaniel A. Frissell, Ph.D., W2NAF
HamSCI Lead
Assistant Professor
Department of Physics and Electrical Engineering
University of Scranton
(973) 787-4506

> On Apr 16, 2020, at 3:42 PM, David G. McGaw via TangerineSDR <tangerinesdr at lists.tapr.org> wrote:
> 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.
> I am at Dartmouth, but my home address as shown on QRZ is best for shipping.
> 73,
> David N1HAC
> On 2/13/20 11:02 AM, David Witten via TangerineSDR wrote:
>> Tentative Result - info only
>> =====================
>> 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. 
>> 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.
>> 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.  
>> 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.
>> Dave Witten KD0EAG
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