Bad air on the West Coast, now means 3 months of seriously dense smoke.
Walk outside in the morning take a deep breath and smell all your
neighbors houses floating in the air...
On 10/15/2020 12:37 PM, Ken Hohhof wrote:
Yeah, and the Trango heater solution sucked bigly.
Other than our long departed SmartBridges stuff, everything actually
seems to run better in winter. The microwave equipment is fine in the
cold, and we have a lot less RF path problems than in summer with all
the stupid crop related issues like multipath, and trees growing into
the path. You can also see a long ways in the crisp cool air, unlike in
summer with the heat waves in the air, what I call “bad air”.
*From:* AF <[email protected]> *On Behalf Of *[email protected]
*Sent:* Thursday, October 15, 2020 2:18 PM
*To:* [email protected]
*Subject:* Re: [AFMUG] Cold-weather Ethernet isolation (electrical / ground)
Was it Trango... yeah I think it was Trango that had a heater for some
of the components on their SMs....
That is one way around it.
*From:*Adam Moffett
*Sent:*Thursday, October 15, 2020 1:12 PM
*To:*[email protected] <mailto:[email protected]>
*Subject:*Re: [AFMUG] Cold-weather Ethernet isolation (electrical / ground)
Interesting. The JDSU industrial temp SFP's are like $200+
Makes me wonder if one of them is robbing me or is the other one
bullshitting me.
On 10/15/2020 3:07 PM, Ken Hohhof wrote:
FS sells a bazillion different SFPs. What is the spec temp range on
the ones you got?
Someone else pointed me to these:
https://www.fs.com/products/12622.html
-30 is pretty cold, not sure if that’s F or C. Of course at -40
they’re the same. You’d expect if you have them plugged into a
switch there would be some heating and the SFP wouldn’t be as cold
as the outdoor temp.
*From:*AF <[email protected]> <mailto:[email protected]>
*On Behalf Of *[email protected] <mailto:[email protected]>
*Sent:* Thursday, October 15, 2020 12:49 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [AFMUG] Cold-weather Ethernet isolation (electrical /
ground)
When I was designing for Carlson, we discovered cold is always the
enemy, not heat.
*From:*Bill Prince
*Sent:*Thursday, October 15, 2020 11:45 AM
*To:*[email protected] <mailto:[email protected]>
*Subject:*Re: [AFMUG] Cold-weather Ethernet isolation (electrical /
ground)
Run fiber. Goes farther, does not conduct.
bp
<part15sbs{at}gmail{dot}com>
On 10/15/2020 10:12 AM, Colin Stanners wrote:
We have a rural tower site where the owner has a few houses on
the property, they ran conduit and cat5e between the houses and
the tower so the houses could get Internet access.
But.... with the size of the property and the tower being a big
metal structure, that caused some voltage / ground imbalances
that fried gear at the houses after storms, I believe even
through surge supressors (hich are made to protect against
single high-voltage direct strikes).
We put in some electrical isolation using copper-fiber-copper
converters / switches at the tower, those worked until the
winter: when it got to -30 outside the FiberStore SFPs were unhappy.
Does anyone have good cold-weather solutions? Or were we just
unlucky with those SFPs and should try something else in the cold?
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