[TangerineSDR] RFI and PSWS Magnetometer

[Dave Larsen]

Ward

FYI  All of us that have been involved in the initial testing of the
Magnetometer boards are using cat6a shielded cables and  shield
connectors.  Dave Witten KD0EAG has created a draft install manual that is
being reviewed now and will be available on the tangerinesdr.com website
once the reviews are done.

Dave KV0S

On Thu, Jun 3, 2021 at 9:23 AM Ward Silver via TangerineSDR <
tangerinesdr at lists.tapr.org> wrote:

> (Changing the thread title to something more descriptive...)
>
> > Jonathan,
> > If necessary, we could probably reduce the i2c bus speed and still
> > easily meet the 1 per second magnetometer polling rate currently in use.
> > Jules-K2KGJ
>
> RFI from the digital data stream would be mostly generated by the edges of
> the I2C pulses and isn't really affected much by the bit rate.  The edges
> have to remain sharp, so not a lot of relief there.  I guess intermittent
> polling would result in bursts of RF which might be an improvement.
>
> I want to mention that we probably don't have a serious RFI.  As Bill
> noted, the receive antenna is quite close to the unit and it is not an
> enormous increase in the noise floor.
>
> At this point, having noted a potential issue, I think the focus should be
> on proper metallic enclosures and shielding, including cable connectors,
> along with careful connections between the chassis and enclosure, in the
> configuration we expect to actually be deployed.  Once that is available,
> more testing can be performed.
>
> 73, Ward N0AX
> --
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> TangerineSDR at lists.tapr.org
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>


-- 
KV0S - Dave Larsen
Columbia, MO, USA
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