[TangerineSDR] TangerineSDR Digest, Vol 17, Issue 7--rm3100 tempco
Julius Madey
hillfox at fairpoint.net
Tue Aug 4 08:32:29 EDT 2020
Thanks, should have caught that .. too late at night !
So from 27 to 40 C, your results for the Z axis are in the same ballpark
as the JJ runs, approximately -10nT per degree C. One of my RM3100s
shows the same relative magnitude but opposite sign on the Z axis. And
I'm also seeing a sign change depending upon the axis.
Jules K2KGJ
On 8/4/2020 1:20 AM, tangerinesdr-request at lists.tapr.org wrote:
> Send TangerineSDR mailing list submissions to
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>
> Today's Topics:
>
> 1. Weekly Thursday 10 AM Telecon on Low-Cost PSWS System
> (Kristina Collins)
> 2. Re: TangerineSDR Digest, Vol 17, Issue 5---re: N1HAC temp
> test (David G. McGaw)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 4 Aug 2020 00:54:00 -0400
> From: Kristina Collins <kvc2 at case.edu>
> To: TAPR TangerineSDR Modular Software Defined Radio
> <tangerinesdr at lists.tapr.org>
> Subject: [TangerineSDR] Weekly Thursday 10 AM Telecon on Low-Cost PSWS
> System
> Message-ID:
> <CAEeerr4JWVA4p25=nDUun83Ap+twSoqsbS8w6DEJzC2vm_xuvw at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi all,
>
> I'd like to make you aware of our weekly telecon discussing the Standard
> Station Receiver/Low Cost Personal Space Weather Station - colloquially,
> the Grape. We meet on Thursdays at 10 am EDT to discuss the system
> development and related topics. As we're articulating our software
> requirements, we'd like to get some feedback from the Tangerine team to
> ensure the systems work well together. All are welcome to join. Please
> email me if you'd like to be added to the mailing list for weekly telecon
> reminders.
>
> Zoom link:
> https://cwru.zoom.us/j/93592820870?pwd=SXhjU0ZDeGNmcTlEc0pSSTltNGs0UT09
> (Password: 734778)
>
> YouTube playlist of meetings to date:
> https://www.youtube.com/playlist?list=PLTvFnCylkeSDkcVfj_qjAhQXar2LYrIP5
>
> Hope to see you there!
>
> 73 de KD8OXT,
> -KC
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> ------------------------------
>
> Message: 2
> Date: Tue, 4 Aug 2020 01:19:34 -0400
> From: "David G. McGaw" <david.g.mcgaw at dartmouth.edu>
> To: tangerinesdr at lists.tapr.org
> Subject: Re: [TangerineSDR] TangerineSDR Digest, Vol 17, Issue 5---re:
> N1HAC temp test
> Message-ID: <cb24a50b-eca0-3f7f-74ad-ef1e316492ae at dartmouth.edu>
> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>
> No, not Rz, just Z from runMag.? Started the temperature high above 85C,
> ended at 27C.
>
> The space between T and Z has been suppressed in your copy below. The
> first line is 27C, 50.9uT, the last line is 85C, 48.6uT.
>
> David N1HAC
>
> On 8/3/20 11:34 PM, Julius Madey via TangerineSDR wrote:
>> Dave, is 'raw data' the rz column from the latest runMag?? I assume
>> you started the test at 85C and ended around perhaps 25C or close to
>> that ??????
>> For Z axis on one of my two RM3100's I'm seeing around -10nT/degreeC
>> Thanks,
>> Jules K2KGJ
>>
>>
>> On 8/3/2020 10:51 PM, tangerinesdr-request at lists.tapr.org wrote:
>>> Send TangerineSDR mailing list submissions to
>>> tangerinesdr at lists.tapr.org
>>>
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>>> or, via email, send a message with subject or body 'help' to
>>> tangerinesdr-request at lists.tapr.org
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>>> tangerinesdr-owner at lists.tapr.org
>>>
>>> When replying, please edit your Subject line so it is more specific
>>> than "Re: Contents of TangerineSDR digest..."
>>>
>>>
>>> Today's Topics:
>>>
>>> 1. Notes from PSWS / TangerineSDR call of 08-02-2020 (Tom McDermott)
>>> 2. Re: Mag update? (David G. McGaw)
>>>
>>>
>>> ----------------------------------------------------------------------
>>>
>>> Message: 1
>>> Date: Mon, 3 Aug 2020 19:12:11 -0700
>>> From: Tom McDermott<tom.n5eg at gmail.com>
>>> To: TAPR TangerineSDR Modular Software Defined Radio
>>> <tangerinesdr at lists.tapr.org>
>>> Subject: [TangerineSDR] Notes from PSWS / TangerineSDR call of
>>> 08-02-2020
>>> Message-ID:
>>> <CACO3nRRbYte9MYE4UQBsej7puLR-qQtSddFH9j8D6wY1Zoku+g at mail.gmail.com>
>>> Content-Type: text/plain; charset="utf-8"
>>>
>>> Notes from PSWS / TangerineSDR call of 08-02-2020
>>>
>>> 1. Still an open question about correlation of the Tangerine magnetometer
>>> data with the instruments at Jenny Jump. Other measurements seem like the
>>> Tangerine unit is basically working, so there are plans to re-try the
>>> measurements at Jenny Jump but at a location closer to the existing science
>>> grade fluxgate magnetometer. Given the very few working copies of Dave's
>>> hand-built units, it's difficult to separate a possible problem with one
>>> unit from a general problem. We agreed to make 10 prototype sets (20
>>> extender boards + 10 PNI boards) using Scotty's artwork so we can have more
>>> units in order to verify proper operation.
>>>
>>> -- Tom, N5EG
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>>> ------------------------------
>>>
>>> Message: 2
>>> Date: Mon, 3 Aug 2020 22:50:25 -0400
>>> From: "David G. McGaw"<david.g.mcgaw at dartmouth.edu>
>>> To:tangerinesdr at lists.tapr.org
>>> Subject: Re: [TangerineSDR] Mag update?
>>> Message-ID:<8aadd47f-fc94-e011-fec3-dfb049fe2b41 at dartmouth.edu>
>>> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>>>
>>> I did a quick and rough test of the magnetometer change vs temperature.?
>>> Here is my raw data.? I was measuring the Z-axis which here in NH is
>>> about 50 uT while changing the temperature, as measured by the T
>>> sensor.? I heated the unit up above 85C and then put it under a
>>> cardboard cover to slow down the cooling and equilibrate the
>>> temperature.? Here is my raw data:
>>>
>>> T??????? Z-axis
>>>
>>> 2750.9 uT
>>>
>>> 3050.85
>>>
>>> 3550.77
>>>
>>> 4050.7
>>>
>>> 4550.7
>>>
>>> 5050.5
>>>
>>> 5550.4
>>>
>>> 6050.1
>>>
>>> 6549.9
>>>
>>> 7049.6
>>>
>>> 7549.2
>>>
>>> 8548.6
>>>
>>>
>>> Noise was about .10 uT peak-peak.
>>>
>>>
>>> David N1HAC
>>>
>>>
>>>
>>> On 8/3/20 12:15 PM, Dr. Nathaniel A. Frissell Ph.D. via TangerineSDR wrote:
>>>> This all sounds very good. I?m eager to see the results.
>>>>
>>>> 73 de Nathaniel W2NAF
>>>>
>>>> *From:* TangerineSDR<tangerinesdr-bounces at lists.tapr.org> *On Behalf
>>>> Of *Julius Madey via TangerineSDR
>>>> *Sent:* Monday, August 3, 2020 11:57 AM
>>>> *To:* Kim, Hyomin<hmkim at njit.edu>; TAPR TangerineSDR Modular Software
>>>> Defined Radio<tangerinesdr at lists.tapr.org>
>>>> *Cc:* Julius Madey<hillfox at fairpoint.net>
>>>> *Subject:* Re: [TangerineSDR] TangerineSDR Digest, Vol 16, Issue
>>>> 32_RM3100temperature effects
>>>>
>>>> Great ! Out of direct sunlight and close to ground level would be best.
>>>>
>>>> On 8/3/2020 11:28 AM, Kim, Hyomin wrote:
>>>>
>>>> This time, I will try to place the sensor as close as possible to
>>>> the science magnetometer at Jenny Jump and insulate it to minimize
>>>> the temperature effect if any.
>>>>
>>>> Gil (the site manager) and I will not be available until next week
>>>> but will try to address this issue as soon as possible.
>>>>
>>>> Hyomin
>>>>
>>>>
>>>> NJIT logo
>>>> <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.njit.edu%2F&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C3b6a91608e414c3e359408d837c88c7e%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637320681789745357&sdata=ucpyw%2FCCoLnq8YpSxPDMvU6K9r7Kgz7CaZbXeNqFNk0%3D&reserved=0>
>>>>
>>>>
>>>>
>>>> *Hyomin Kim*
>>>> Assistant Professor
>>>> Physics
>>>> Center for Solar-Terrestrial Research
>>>> Institute for Space Weather Sciences
>>>> hmkim at njit.edu <mailto:hmkim at njit.edu>???(973)?596-5704
>>>> https://web.njit.edu/~hmkim/
>>>> <https://nam12.safelinks.protection.outlook.com/?url=https:%2F%2Fweb.njit.edu%2F~hmkim%2F&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C3b6a91608e414c3e359408d837c88c7e%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637320681789745357&sdata=BHNGmalVicIaozYaLs8qrpyLbAZVxSgPteuU4DFCMP4%3D&reserved=0>
>>>> 104 Tiernan Hall, 161 Warren Street, Newark, NJ 07102
>>>>
>>>> On Sun, Aug 2, 2020 at 1:49 PM Julius Madey via TangerineSDR
>>>> <tangerinesdr at lists.tapr.org <mailto:tangerinesdr at lists.tapr.org>>
>>>> wrote:
>>>>
>>>> That is the claim.? So either that's not the case, or perhaps
>>>> it holds for levels in excess of a few hundred nT or something
>>>> else is causing the variations that were observed at Jenny
>>>> Jump and in my various tests.? It is probably not B fields
>>>> very local to the adapter board, which sees currents in the
>>>> 10mA range.? Just did some tests with 100mA into a twisted
>>>> pair of #31 magnet wire held near different parts of the
>>>> RM3100 board.
>>>>
>>>> If the twisted pair was 0.5cm or more away from anything on
>>>> the board, no effect observed.? If it lay directly on one of
>>>> the sensing inductors, effect was ~ 50nT.
>>>>
>>>> Another thought on temperature stability .... place the mag in
>>>> an in-ground vault.? Back in the 60's when we needed xtal
>>>> oscillator stability on the cheap and better than the usual
>>>> xtal oven of the day, we put the oscillator assembly about 3
>>>> feet underground.? Very stable short term and excellent long
>>>> term.? It would certainly work for 24 hour observation periods.
>>>>
>>>> Jules Madey-K2KGJ
>>>>
>>>> On 7/31/2020 1:38 PM,tangerinesdr-request at lists.tapr.org
>>>> <mailto:tangerinesdr-request at lists.tapr.org> wrote:
>>>>
>>>> Send TangerineSDR mailing list submissions to
>>>>
>>>> tangerinesdr at lists.tapr.org <mailto:tangerinesdr at lists.tapr.org>
>>>>
>>>> To subscribe or unsubscribe via the World Wide Web, visit
>>>>
>>>> http://lists.tapr.org/mailman/listinfo/tangerinesdr_lists.tapr.org <https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.tapr.org%2Fmailman%2Flistinfo%2Ftangerinesdr_lists.tapr.org&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C3b6a91608e414c3e359408d837c88c7e%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637320681789755315&sdata=B3wNdBV%2FREqktEeE0y7y%2FDiYquLZOy5OTAc9LCnruhc%3D&reserved=0>
>>>>
>>>> or, via email, send a message with subject or body 'help' to
>>>>
>>>> tangerinesdr-request at lists.tapr.org <mailto:tangerinesdr-request at lists.tapr.org>
>>>>
>>>> You can reach the person managing the list at
>>>>
>>>> tangerinesdr-owner at lists.tapr.org <mailto:tangerinesdr-owner at lists.tapr.org>
>>>>
>>>> When replying, please edit your Subject line so it is more specific
>>>>
>>>> than "Re: Contents of TangerineSDR digest..."
>>>>
>>>> Today's Topics:
>>>>
>>>> ?? 1. Re: Mag update? (David G. McGaw)
>>>>
>>>> ?? 2. Re: Mag update? (David G. McGaw)
>>>>
>>>> ----------------------------------------------------------------------
>>>>
>>>> Message: 1
>>>>
>>>> Date: Fri, 31 Jul 2020 13:36:38 -0400
>>>>
>>>> From: "David G. McGaw"<david.g.mcgaw at dartmouth.edu> <mailto:david.g.mcgaw at dartmouth.edu>
>>>>
>>>> To:tangerinesdr at lists.tapr.org <mailto:tangerinesdr at lists.tapr.org>
>>>>
>>>> Subject: Re: [TangerineSDR] Mag update?
>>>>
>>>> Message-ID:<3718db2a-97b4-eba5-8f0a-e94ead711cd7 at dartmouth.edu> <mailto:3718db2a-97b4-eba5-8f0a-e94ead711cd7 at dartmouth.edu>
>>>>
>>>> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>>>>
>>>> Interesting, this, as it says on the RM3100 webpage "Measurements are
>>>>
>>>> stable over temperature and inherently free of offset drift" and a
>>>>
>>>> temperature coefficient is not even mentioned in the specs.
>>>>
>>>> David N1HAC
>>>>
>>>> On 7/31/20 11:18 AM, Julius Madey via TangerineSDR wrote:
>>>>
>>>> Good morning all.? Betty Zhang at PNI is responding to the request and
>>>>
>>>> has asked for more information which I have supplied, including some
>>>>
>>>> of the JJ test comparisons, how I ran the calibration runs I did, data
>>>>
>>>> reduction, etc.
>>>>
>>>> I would suggest one further item for consideration in getting to a
>>>>
>>>> useable solution.? If RM3100 temperature turns out to be a concern,
>>>>
>>>> place the sensor in a small foam insulated box with a proportionally
>>>>
>>>> controlled heater which maintains the temperature at something just
>>>>
>>>> above what would be considered the highest environmental temperature
>>>>
>>>> around the sensor.? That should be relatively simple to do without
>>>>
>>>> introducing an interfering magnetic field local to the sensor.? Some
>>>>
>>>> power would be required but with careful design, I would think well
>>>>
>>>> within 1 watt.
>>>>
>>>> Another possibility would be using peltier effect heat pumps to do the
>>>>
>>>> same thing, although the technology would probably result is stronger
>>>>
>>>> local B fields from the peltier device and require more power.? The
>>>>
>>>> insulated foam box and proportional heater is also probably the
>>>>
>>>> cheapest approach considering the need to keep overall costs for the
>>>>
>>>> expected users low.
>>>>
>>>> Regards,
>>>>
>>>> Jules
>>>>
>>>> On 7/31/2020 10:26 AM, David Witten wrote:
>>>>
>>>> Hyomin,
>>>>
>>>> I'm not certain what the next step should be.? Julius is hoping for
>>>>
>>>> further response from PNI on this subject.
>>>>
>>>> If temperature compensation does account for the differences in
>>>>
>>>> observed response I would think that the important thing to? do may
>>>>
>>>> be to find a way to calibrate out the discrepancy.? Then we can look
>>>>
>>>> at insulation to further minimize the effect.
>>>>
>>>> Calibration will hopefully give us more meaningful values to begin?with.
>>>>
>>>> Insulation will dampen the effect of those behaviors over short
>>>>
>>>> timespans.
>>>>
>>>> Fortunately, neither requires changes?in the basic circuit, just
>>>>
>>>> adjustments to the data collection and device packaging.
>>>>
>>>> Dave
>>>>
>>>> On Fri, Jul 31, 2020 at 9:10 AM Kim, Hyomin <hmkim at njit.edu <mailto:hmkim at njit.edu>
>>>>
>>>> <mailto:hmkim at njit.edu> <mailto:hmkim at njit.edu>> wrote:
>>>>
>>>> ??? Hi Dave
>>>>
>>>> ??? Sorry that I've been out of the loop for a while as I was
>>>>
>>>> ??? completely caught up with something else. May I ask you what the
>>>>
>>>> ??? current status is?
>>>>
>>>> ??? I can visit Jenny Jump if there is something that I can do. At
>>>>
>>>> ??? this moment, I cannot think of anything that can be fixed from my
>>>>
>>>> ??? end.
>>>>
>>>> ??? If the temperature compensation is the issue, I could install
>>>>
>>>> ??? insulations around the sensor.
>>>>
>>>> ??? Hyomin
>>>>
>>>> ??? NJIT logo
>>>>
>>>> <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.njit.edu%2F&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C2e59f624469544810c1c08d8356521e1%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637318055785489421&sdata=TmqWJw6VYdRSrTgS2xSIifG4OTUj6z5lcBLqd2UedyY%3D&reserved=0> <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.njit.edu%2F&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C3b6a91608e414c3e359408d837c88c7e%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637320681789755315&sdata=NPkBosTmBhBS2wYv0poh6V16oCwYx%2F1o5Znw4QtGFLA%3D&reserved=0>
>>>>
>>>> ??? ? *Hyomin Kim*
>>>>
>>>> ??? Assistant Professor
>>>>
>>>> ??? Physics
>>>>
>>>> ??? Center for Solar-Terrestrial Research
>>>>
>>>> ??? Institute for Space Weather Sciences
>>>>
>>>> hmkim at njit.edu <mailto:hmkim at njit.edu> <mailto:hmkim at njit.edu> <mailto:hmkim at njit.edu>?? (973)?596-5704
>>>>
>>>> https://web.njit.edu/~hmkim/ <https://nam12.safelinks.protection.outlook.com/?url=https:%2F%2Fweb.njit.edu%2F~hmkim%2F&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C3b6a91608e414c3e359408d837c88c7e%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637320681789765273&sdata=2VoO3Q96MjJxabOXnnX2z6K3Py7eG4UB0hJXFSlrl7Y%3D&reserved=0>
>>>>
>>>> <https://nam12.safelinks.protection.outlook.com/?url=https:%2F%2Fweb.njit.edu%2F~hmkim%2F&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C2e59f624469544810c1c08d8356521e1%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637318055785499423&sdata=Nz%2B0y9A0svN6RegTKpvfpWgJ%2FCb1N1vKkFr71fqtDFg%3D&reserved=0> <https://nam12.safelinks.protection.outlook.com/?url=https:%2F%2Fweb.njit.edu%2F~hmkim%2F&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C3b6a91608e414c3e359408d837c88c7e%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637320681789765273&sdata=2VoO3Q96MjJxabOXnnX2z6K3Py7eG4UB0hJXFSlrl7Y%3D&reserved=0>
>>>>
>>>> ??? 104 Tiernan Hall, 161 Warren Street, Newark, NJ 07102
>>>>
>>>> -------------- next part --------------
>>>>
>>>> An HTML attachment was scrubbed...
>>>>
>>>> URL:<http://lists.tapr.org/pipermail/tangerinesdr_lists.tapr.org/attachments/20200731/e6ae7f2b/attachment-0001.html> <https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.tapr.org%2Fpipermail%2Ftangerinesdr_lists.tapr.org%2Fattachments%2F20200731%2Fe6ae7f2b%2Fattachment-0001.html&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C3b6a91608e414c3e359408d837c88c7e%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637320681789765273&sdata=dZYvGKaUWirgcFfS4jtmgueRKk9giJ3%2BrFoDjnWVo6c%3D&reserved=0>
>>>>
>>>> ------------------------------
>>>>
>>>> Message: 2
>>>>
>>>> Date: Fri, 31 Jul 2020 13:37:51 -0400
>>>>
>>>> From: "David G. McGaw"<david.g.mcgaw at dartmouth.edu> <mailto:david.g.mcgaw at dartmouth.edu>
>>>>
>>>> To:tangerinesdr at lists.tapr.org <mailto:tangerinesdr at lists.tapr.org>
>>>>
>>>> Subject: Re: [TangerineSDR] Mag update?
>>>>
>>>> Message-ID:<f86f2596-ef2b-25c7-5b12-3f83c4429cb3 at dartmouth.edu> <mailto:f86f2596-ef2b-25c7-5b12-3f83c4429cb3 at dartmouth.edu>
>>>>
>>>> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>>>>
>>>> Interesting, this, as it says on the RM3100 webpage "Measurements are
>>>>
>>>> stable over temperature and inherently free of offset drift" and a
>>>>
>>>> temperature coefficient is not even mentioned in the specs.
>>>>
>>>> David N1HAC
>>>>
>>>> On 7/31/20 11:44 AM, Julius Madey via TangerineSDR wrote:
>>>>
>>>> One more thought.? I've asked PNI for information both on temperature
>>>>
>>>> and supply voltage sensitivity, the only two variables I could think
>>>>
>>>> of besides the need to minimize local B fields due to currents in
>>>>
>>>> circuit board traces, nearby wiring, etc.
>>>>
>>>> I did not find data on the temperature stability of the 3.3 volt
>>>>
>>>> regulator Dave's JJ board? is using but the regulator I used with the
>>>>
>>>> original adapter board Dave sent me has about 5 millivolts of change
>>>>
>>>> out of 3.3 volts between 25 and 50 C and Dave's is probably similar.?
>>>>
>>>> That doesn't seem like enough change to produce the observed
>>>>
>>>> variations but that information was given to PNI as well.
>>>>
>>>> On 7/31/2020 10:26 AM, David Witten wrote:
>>>>
>>>> Hyomin,
>>>>
>>>> I'm not certain what the next step should be.? Julius is hoping for
>>>>
>>>> further response from PNI on this subject.
>>>>
>>>> If temperature compensation does account for the differences in
>>>>
>>>> observed response I would think that the important thing to? do may
>>>>
>>>> be to find a way to calibrate out the discrepancy.? Then we can look
>>>>
>>>> at insulation to further minimize the effect.
>>>>
>>>> Calibration will hopefully give us more meaningful values to begin?with.
>>>>
>>>> Insulation will dampen the effect of those behaviors over short
>>>>
>>>> timespans.
>>>>
>>>> Fortunately, neither requires changes?in the basic circuit, just
>>>>
>>>> adjustments to the data collection and device packaging.
>>>>
>>>> Dave
>>>>
>>>> On Fri, Jul 31, 2020 at 9:10 AM Kim, Hyomin <hmkim at njit.edu <mailto:hmkim at njit.edu>
>>>>
>>>> <mailto:hmkim at njit.edu> <mailto:hmkim at njit.edu>> wrote:
>>>>
>>>> ??? Hi Dave
>>>>
>>>> ??? Sorry that I've been out of the loop for a while as I was
>>>>
>>>> ??? completely caught up with something else. May I ask you what the
>>>>
>>>> ??? current status is?
>>>>
>>>> ??? I can visit Jenny Jump if there is something that I can do. At
>>>>
>>>> ??? this moment, I cannot think of anything that can be fixed from my
>>>>
>>>> ??? end.
>>>>
>>>> ??? If the temperature compensation is the issue, I could install
>>>>
>>>> ??? insulations around the sensor.
>>>>
>>>> ??? Hyomin
>>>>
>>>> ??? NJIT logo
>>>>
>>>> <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.njit.edu%2F&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C4a7b93ba3ecd455d4e0f08d83568b144%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637318071068004568&sdata=O09d%2FBt6N3Iq%2FUVQ5KdQz6V0Km3YIN%2BucnCkc1JQC8E%3D&reserved=0> <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.njit.edu%2F&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C3b6a91608e414c3e359408d837c88c7e%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637320681789775223&sdata=H6uOa%2F1m4ad5ZqG5fZC48ZI38v3K86nBZoVrEiBnLZc%3D&reserved=0>
>>>>
>>>> ??? ? *Hyomin Kim*
>>>>
>>>> ??? Assistant Professor
>>>>
>>>> ??? Physics
>>>>
>>>> ??? Center for Solar-Terrestrial Research
>>>>
>>>> ??? Institute for Space Weather Sciences
>>>>
>>>> hmkim at njit.edu <mailto:hmkim at njit.edu> <mailto:hmkim at njit.edu> <mailto:hmkim at njit.edu>?? (973)?596-5704
>>>>
>>>> https://web.njit.edu/~hmkim/ <https://nam12.safelinks.protection.outlook.com/?url=https:%2F%2Fweb.njit.edu%2F~hmkim%2F&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C3b6a91608e414c3e359408d837c88c7e%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637320681789775223&sdata=WRwBs7Qy86UEiCfSplyHYSvED0NXNLmAzebDp9b2RwM%3D&reserved=0>
>>>>
>>>> <https://nam12.safelinks.protection.outlook.com/?url=https:%2F%2Fweb.njit.edu%2F~hmkim%2F&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C4a7b93ba3ecd455d4e0f08d83568b144%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637318071068004568&sdata=W4LqWL2HfX4hkY0cMhqWDsY%2FlWS9nz1bpjcEZ9%2FbSNE%3D&reserved=0> <https://nam12.safelinks.protection.outlook.com/?url=https:%2F%2Fweb.njit.edu%2F~hmkim%2F&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C3b6a91608e414c3e359408d837c88c7e%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637320681789785179&sdata=9O71vnH9udWkE8OCMib3XRhfUsdlaM47x%2Fu3ywzCiwU%3D&reserved=0>
>>>>
>>>> ??? 104 Tiernan Hall, 161 Warren Street, Newark, NJ 07102
>>>>
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>>>>
>>>> ------------------------------
>>>>
>>>> Subject: Digest Footer
>>>>
>>>> TangerineSDR mailing list
>>>>
>>>> TangerineSDR at lists.tapr.org <mailto:TangerineSDR at lists.tapr.org>
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>>>> http://lists.tapr.org/mailman/listinfo/tangerinesdr_lists.tapr.org <https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.tapr.org%2Fmailman%2Flistinfo%2Ftangerinesdr_lists.tapr.org&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C3b6a91608e414c3e359408d837c88c7e%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637320681789785179&sdata=oNXGCjmXqTt8085LgVtuO6xeaNEnOmRobb5F2ZiJkro%3D&reserved=0>
>>>>
>>>> ------------------------------
>>>>
>>>> End of TangerineSDR Digest, Vol 16, Issue 32
>>>>
>>>> ********************************************
>>>>
>>>> --
>>>> TangerineSDR mailing list
>>>> TangerineSDR at lists.tapr.org <mailto:TangerineSDR at lists.tapr.org>
>>>> http://lists.tapr.org/mailman/listinfo/tangerinesdr_lists.tapr.org
>>>> <https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.tapr.org%2Fmailman%2Flistinfo%2Ftangerinesdr_lists.tapr.org&data=02%7C01%7CDavid.G.McGaw%40dartmouth.edu%7C3b6a91608e414c3e359408d837c88c7e%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C637320681789795142&sdata=%2FS94dFL8FzpJa898yaT3nTAT4gm0Km66Pp%2BUwbFFpHQ%3D&reserved=0>
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>>> ------------------------------
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>>> Subject: Digest Footer
>>>
>>> TangerineSDR mailing list
>>> TangerineSDR at lists.tapr.org
>>> http://lists.tapr.org/mailman/listinfo/tangerinesdr_lists.tapr.org
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>>>
>>> ------------------------------
>>>
>>> End of TangerineSDR Digest, Vol 17, Issue 5
>>> *******************************************
>>>
>>
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> ------------------------------
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> Subject: Digest Footer
>
> TangerineSDR mailing list
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> http://lists.tapr.org/mailman/listinfo/tangerinesdr_lists.tapr.org
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>
> ------------------------------
>
> End of TangerineSDR Digest, Vol 17, Issue 7
> *******************************************
>
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