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tech / sci.electronics.design / This is rather scary

SubjectAuthor
* This is rather scaryDavid Lesher
+- Re: This is rather scaryLasse Langwadt Christensen
+- Re: This is rather scaryRobert Baer
+* Re: This is rather scaryJasen Betts
|+- Re: This is rather scaryDavid Lesher
|`- Re: This is rather scaryRobert Baer
`* Re: This is rather scaryjlarkin
 `- Re: This is rather scarybitrex

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This is rather scary

<sqdqth$60e$1@reader1.panix.com>

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https://www.novabbs.com/tech/article-flat.php?id=86019&group=sci.electronics.design#86019

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From: wb8...@panix.com (David Lesher)
Newsgroups: sci.electronics.design
Subject: This is rather scary
Date: Tue, 28 Dec 2021 01:57:05 -0000 (UTC)
Organization: NRK Clinic for habitual NetNews Abusers - Beltway Annex
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 by: David Lesher - Tue, 28 Dec 2021 01:57 UTC

<https://nepp.nasa.gov/whisker/failures/index.htm>

--
A host is a host from coast to coast...............wb8foz@panix.com
& no one will talk to a host that's close..........................
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

Re: This is rather scary

<940d2c8e-43f9-49e2-a01b-e99ca0eff030n@googlegroups.com>

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Subject: Re: This is rather scary
From: langw...@fonz.dk (Lasse Langwadt Christensen)
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 by: Lasse Langwadt Chris - Tue, 28 Dec 2021 02:02 UTC

tirsdag den 28. december 2021 kl. 02.57.11 UTC+1 skrev David Lesher:
> <https://nepp.nasa.gov/whisker/failures/index.htm>
>

mostly +15 years ago?

Re: This is rather scary

<16c4d7d95fb63db6$1$3261276$64dd6e6a@news.thecubenet.com>

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Subject: Re: This is rather scary
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From: robertb...@localnet.com (Robert Baer)
Date: Mon, 27 Dec 2021 22:38:11 -0800
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 by: Robert Baer - Tue, 28 Dec 2021 06:38 UTC

David Lesher wrote:
> <https://nepp.nasa.gov/whisker/failures/index.htm>
>
>
SILVER??

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Re: This is rather scary

<sqeepj$ke2$1@gonzo.revmaps.no-ip.org>

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From: use...@revmaps.no-ip.org (Jasen Betts)
Newsgroups: sci.electronics.design
Subject: Re: This is rather scary
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 by: Jasen Betts - Tue, 28 Dec 2021 07:36 UTC

On 2021-12-28, David Lesher <wb8foz@panix.com> wrote:
><https://nepp.nasa.gov/whisker/failures/index.htm>

It seems to only effect satellites launched before 1996

--
Jasen.

Re: This is rather scary

<t7cmsg5ctkgjd849c9rv33fdcuurnksvnl@4ax.com>

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NNTP-Posting-Date: Tue, 28 Dec 2021 09:49:13 -0600
From: jlar...@highlandsniptechnology.com
Newsgroups: sci.electronics.design
Subject: Re: This is rather scary
Date: Tue, 28 Dec 2021 07:49:12 -0800
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 by: jlar...@highlandsniptechnology.com - Tue, 28 Dec 2021 15:49 UTC

On Tue, 28 Dec 2021 01:57:05 -0000 (UTC), David Lesher
<wb8foz@panix.com> wrote:

><https://nepp.nasa.gov/whisker/failures/index.htm>

I guess whiskers can grow in vacuum. I thought moisture had something
to do with them.

Another unexpected satellite failure mode was Farnsworth
secondary-emission oscillations in RF power amps.

Shiny <> good.

--

I yam what I yam - Popeye

Re: This is rather scary

<sqfdrf$3lp$1@reader1.panix.com>

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From: wb8...@panix.com (David Lesher)
Newsgroups: sci.electronics.design
Subject: Re: This is rather scary
Date: Tue, 28 Dec 2021 16:26:23 -0000 (UTC)
Organization: NRK Clinic for habitual NetNews Abusers - Beltway Annex
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 by: David Lesher - Tue, 28 Dec 2021 16:26 UTC

Jasen Betts <usenet@revmaps.no-ip.org> writes:

>On 2021-12-28, David Lesher <wb8foz@panix.com> wrote:
>><https://nepp.nasa.gov/whisker/failures/index.htm>

>It seems to only effect satellites launched before 1996

Gee, maybe the satellite designers got smarter.

That does not say others did as well, like automotive
parts manufacturers.

--
A host is a host from coast to coast...............wb8foz@panix.com
& no one will talk to a host that's close..........................
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

Re: This is rather scary

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 by: bitrex - Tue, 28 Dec 2021 19:27 UTC

On 12/28/2021 10:49 AM, jlarkin@highlandsniptechnology.com wrote:
> On Tue, 28 Dec 2021 01:57:05 -0000 (UTC), David Lesher
> <wb8foz@panix.com> wrote:
>
>> <https://nepp.nasa.gov/whisker/failures/index.htm>
>
> I guess whiskers can grow in vacuum. I thought moisture had something
> to do with them.
>
> Another unexpected satellite failure mode was Farnsworth
> secondary-emission oscillations in RF power amps.
>
> Shiny <> good.
>
>
>

Murphy's law in action, I hate it:

<https://www.semlab.com/wp-content/uploads/2017/06/Suspected-tin-whisker-1.png>

Re: This is rather scary

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From: robertb...@localnet.com (Robert Baer)
Date: Tue, 28 Dec 2021 21:44:28 -0800
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 by: Robert Baer - Wed, 29 Dec 2021 05:44 UTC

Jasen Betts wrote:
> On 2021-12-28, David Lesher <wb8foz@panix.com> wrote:
>> <https://nepp.nasa.gov/whisker/failures/index.htm>
>
> It seems to only effect satellites launched before 1996
>
>
I meant silver whiskers; never thought it was possible.

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