I believe that those SFPs were specced to -40 (C) , but didn't directly confirm as IIRC that detail is not indicated on/by the unit's model number. These were small switches/converters of only a few watts, wouldn't heat much.
On Thu, Oct 15, 2020 at 2:08 PM Ken Hohhof <af...@kwisp.com> 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 <af-boun...@af.afmug.com> *On Behalf Of *ch...@wbmfg.com > *Sent:* Thursday, October 15, 2020 12:49 PM > *To:* af@af.afmug.com > *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:* af@af.afmug.com > > *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? > > > > > > > > ------------------------------ > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
-- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
