[sudo-discuss] Can someone please donate Cat6 Shielded cable?

[danarauz at gmail.com]

Hey Andrew,

I am wondering if you had the chance to bring the boxes of cable?

I came in to Sudo during the week and now again (today Saturday), but I
don't see any boxes here; at least if they are stored in some secret room.

Thanks,

Daniel

On Tue, Aug 25, 2015 at 12:54 PM, danarauz at gmail.com <danarauz at gmail.com>
wrote:

> Hey Andrew, that is awesome, many thanks!
>
> Daniel
>
> On Tue, Aug 25, 2015 at 1:44 AM, Andrew Lowe <andrew at lostways.com> wrote:
>
>> I have boxes of cat 6 cables to donate, and cat5e. I'll try to stop by
>> tomorrow during the day to drop them off.
>>
>> On Tue, Aug 25, 2015 at 1:38 AM, max b <maxb.personal at gmail.com> wrote:
>>
>>> Hey Charley,
>>>
>>> You're more than welcome to donate money (or time) if that's more up
>>> your alley. Also, if you want to donate UTP cat6, we'll take that as well.
>>> We use a bunch of ethernet cable both at the omni and for other
>>> installations, so we can always use more. If you're feeling really
>>> generous, we can really use shielded outdoor cat5 and cat6 for installing
>>> antennas. Don't worry - no matter what kind of ethernet cabling you feel
>>> like donating, we can almost certainly find a use for it :)
>>>
>>> As for the questions you've outlined:
>>>
>>> First thing: shielded cable
>>>
>>> This isn't actually an ethernet run. It's dsl lines + phone lines
>>> running over cat copper wires. As such, it's my understanding that it's
>>> more sensitive to EMI disturbance. Additionally, it's much better to err on
>>> the safe side as we'll only want to string this once and the entire network
>>> communications infrastructure depends on the dsl signal that passes through
>>> this line. As for needing shielded mating jacks, we have plenty of grounded
>>> rj-45 connectors and with whatever other scenarios, it's pretty easy to
>>> ensure that they're grounded. We're not talking about our entire network
>>> infrastructure, we're just talking about this one cable run.
>>>
>>> Second thing: hand termination
>>>
>>> We're using an EZ RJ-45 crimper, which makes the process fairly
>>> straightforward. We have spools of other types of ethernet cables and have
>>> done runs throughout the building. Also - we'll be breaking out these pairs
>>> anyhow, so most of this is fairly non standard types of termination which
>>> are much easier than rj-45 disconnects.
>>>
>>>
>>> Daniel, let us know if I missed anything here?
>>>
>>>
>>> Max
>>>
>>> On Tue, Aug 25, 2015 at 2:01 AM, Charley Sheets <rcsheets at acm.org>
>>> wrote:
>>>
>>>> Hey Daniel,
>>>>
>>>> I am interested in helping out, but I have to admit I'm fairly
>>>> skeptical of two elements of this request, so I'd like to get some
>>>> clarification if possible.
>>>>
>>>> First thing: shielded cable. My understanding is that most of the noise
>>>> rejection comes from the twists, not the shielding, and that shielded
>>>> cable is only useful in high-EMI environments. Am I mistaken about the
>>>> application, or are we perhaps in a high-EMI environment? The standard
>>>> example of high EMI is something like a factory floor. Shielding also
>>>> only works as intended if the mating connectors (jacks and whatnot) are
>>>> also shielded. Does that apply here? My inclination is to donate
>>>> standard (UTP) cat6 cable. Please help me understand why I should
>>>> donate shielded cable instead.
>>>>
>>>> Here is some information (could be biased -- it's from a cable
>>>> supplier) about the differences as they apply to cat6a:
>>>> http://mirapath.com/blog/item/cat6a-shielded-or-unshielded
>>>>
>>>> Second thing: hand termination. You've stated a preference for a box of
>>>> several hundred feet of cable. To me that implies that you'd prefer to
>>>> hand terminate the cable rather than having pre-terminated cables. I
>>>> certainly won't make any claims about your personal ability to
>>>> terminate cables, but most people are not especially skilled at this,
>>>> and many hand terminated cables I've seen in the field are visibly not
>>>> well made. I've terminated cat5 and cat5e cable, and it's always been
>>>> very fiddly and challenging for me to minimize the untwisted distance,
>>>> and to ensure there are no open pins. Pre-terminated cable is
>>>> available with strain relief boots and is often certified to be
>>>> complaint with the relevant cabling standard. What do you see as the
>>>> advantage of spools of cable? Why not buy pre-terminated cable?
>>>>
>>>> I hope this doesn't come across as overly critical. Sorry if it does. I
>>>> really just want to make sure we get exactly what we need.
>>>> --
>>>> Charley Sheets
>>>>
>>>> _______________________________________________
>>>> sudo-discuss mailing list
>>>> sudo-discuss at lists.sudoroom.org
>>>> https://sudoroom.org/lists/listinfo/sudo-discuss
>>>>
>>>>
>>>
>>> _______________________________________________
>>> sudo-discuss mailing list
>>> sudo-discuss at lists.sudoroom.org
>>> https://sudoroom.org/lists/listinfo/sudo-discuss
>>>
>>>
>>
>>
>> --
>> ---------
>> Andrew Lowe
>> http://www.lostways.com
>>
>> _______________________________________________
>> sudo-discuss mailing list
>> sudo-discuss at lists.sudoroom.org
>> https://sudoroom.org/lists/listinfo/sudo-discuss
>>
>>
>
>
> --
>
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> - - - - - - - - - - - - -
> Help open a people-powered common space in Oakland, California!
> https://omnicommons.org/donate
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> - - - - - - - - - - - - -
>
>
>


-- 

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - -
Help open a people-powered common space in Oakland, California!
https://omnicommons.org/donate
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - -
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sudoroom.org/pipermail/sudo-discuss/attachments/20150829/c015a328/attachment.html>