Vger
On 8/31/22 2:58 PM, Chuck McCown via AF wrote:
https://youtu.be/kHUZCVl28lg
*From:* Daniel Pautz via AF
*Sent:* Wednesday, August 31, 2022 3:51 PM
*To:* 'AnimalFarm Microwave Users Group'
*Cc:* Daniel Pautz
*Subject:* Re: [AFMUG] OT Voyager
I thought the star trek one was Pioneer 1?
*From:* AF <[email protected]> *On Behalf Of *Chuck McCown via AF
*Sent:* Wednesday, August 31, 2022 3:47 PM
*To:* [email protected]
*Cc:* Chuck McCown <[email protected]>
*Subject:* Re: [AFMUG] OT Voyager
Nope, did you not watch Star Trek?
*From:*Bill Prince
*Sent:*Wednesday, August 31, 2022 3:06 PM
*To:*[email protected]
*Subject:*Re: [AFMUG] OT Voyager
The Voyager probes don't use solar; they are nuke powered. There is
pretty much no actual sun out where they are now anyway. Their EOL is
coming around pretty darn soon though.
bp
<part15sbs{at}gmail{dot}com>
On 8/31/2022 10:13 AM, Chuck McCown via AF wrote:
I was taught, many years ago, that minority (might have been
majority) charge carrier migration in semiconductors would render
them useless in 20 years. Also solar panels are supposed to wear
out in 20 years. And cosmic rays kill all semiconductors. etc
etc Danged good modulation they are using whatever it is. I
think it was some kind of pseudo random noise code but I may be
wrong about that. A professor in an analog class told me that
almost 40 years ago.
*From:*[email protected]
*Sent:*Wednesday, August 31, 2022 11:08 AM
*To:*'AnimalFarm Microwave Users Group'
*Cc:*'Chuck McCown'
*Subject:*RE: [AFMUG] OT Voyager
I’d bet a smaller codebase helps. No gigabytes of libraries to debug.
But yeah, if something I built lasted 45 years in outer space I’d
pat myself on the back a bit.
*From:*AF mailto:[email protected] *On Behalf Of *Chuck
McCown via AF
*Sent:* Wednesday, August 31, 2022 11:50 AM
*To:* [email protected]
*Cc:* Chuck McCown mailto:[email protected]
*Subject:* [AFMUG] OT Voyager
This space vehicle launched 45 years ago started sending garbage
telemetry. The folks running that show figured it was routing the
data through a known defective computer.
So they commanded it to switch to the good computer and they got
good telemetry.
Talk about latency... 16 hours.
So 45 (more likely 55) year old hardware running an OS that old is
still essentially rocks solid. So are the transmitters and
receivers and other RF components allowing communication clear out
into deep space.
Damn, those engineers and coders must be proud of the job they did.
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