[AusNOG] Smoke and radio performance

[Edwin Groothuis]

1 km? That should make it possible to see the beams of laser links.

Edwin


On Tue, 10 Dec 2019 at 13:17, Nathan Brookfield <
Nathan.Brookfield at simtronic.com.au> wrote:

> At the moment in Sydney, visibility is less than a km in some parts, it’s
> ridiculous!
>
>
>
> Kindest Regards,
>
> Nathan Brookfield (VK2NAB)
>
>
>
> Chief Executive Officer
>
> Simtronic Technologies Pty Ltd
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> *From:* AusNOG <ausnog-bounces at lists.ausnog.net> *On Behalf Of *Steven
> Waite
> *Sent:* Tuesday, December 10, 2019 12:49 PM
> *To:* John England <john at bitwave.com.au>; Narelle Clark <
> narellec at gmail.com>; ausnog at ausnog.net <ausnog at lists.ausnog.net>
> *Subject:* Re: [AusNOG] Smoke and radio performance
>
>
>
> We are seeing a similar thing. We have taken that into account within our
> fade margin. Only seeing 2-3dbm difference on the one or two 5ghz links we
> have. We have notice more of a hit on the 18ghz links but it only seems to
> be at night. I think its more related with humidity and temperature
> inversions added with smoke worse then last year. Noise floor has not
> changed.
>
>
>
>
>
>
>
>
>
> *From:* AusNOG <ausnog-bounces at lists.ausnog.net> *On Behalf Of *John
> England
> *Sent:* Tuesday, 10 December 2019 10:27 AM
> *To:* Narelle Clark <narellec at gmail.com>; ausnog at ausnog.net <
> ausnog at lists.ausnog.net>
> *Subject:* Re: [AusNOG] Smoke and radio performance
>
>
>
> Nothing too substantial during the day on any of our 5GHz, 24GHz or 80GHz
> links. Plenty of early AM thermal ducting events that seem worse than usual
> on 5GHz. Not sure how bad the smoke is there, but our visibility was down
> to ~4km at the worst.
>
>
>
> Cheers.
>
>
>
> John England
>
>
>
> *From:* AusNOG <ausnog-bounces at lists.ausnog.net> *On Behalf Of *Narelle
> Clark
> *Sent:* Tuesday, 10 December 2019 11:14 AM
> *To:* ausnog at ausnog.net <ausnog at lists.ausnog.net>
> *Subject:* [AusNOG] Smoke and radio performance
>
>
>
>
>
> Folks
>
> Does anyone have any real world measurement data on the performance impact
> from the bushfire smoke on point to point radio throughput?
>
>
>
> We're seeing a hit on a 5GHz system over the last week or so which seems
> awfully coincidental...
>
>
>
>
>
> Narelle
>
>
>
>
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