ddietrich
join:2002-02-22
Longmont, CO | Anybody got a picture of a Load Coil ?
I have never seen a load coil and was wondering if any body had a picture of one. I know it doesn't fit the 1k/month idea but it is broadband related. |
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CJPC
Premium
join:2001-02-20
Charlestown, MA
clubs:  | Umm...Those are inside the plant...so i dont know if someone will...but hopefully someone will come out with one!
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Oxygen
Times Square can't shine as bright
Premium
join:2001-12-04
Nesconset, NY
| said by CJPC  :
Umm...Those are inside the plant...so i dont know if someone will...but hopefully someone will come out with one!
No they are not... They hang off the poles.
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CJPC
Premium
join:2001-02-20
Charlestown, MA
clubs: | Really...wow...a tech told me they were inside....i hate stupid techs! |
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Bobcat
Premium
join:2001-02-04
Bedminster, NJ | reply to Oxygen
They're inside little, flat, rectangular metal boxes, aren't they? |
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drslash
Goya Asma
Premium
join:2002-02-18
Marion, IA | reply to ddietrich
When I had a second phone line I believe I had a load coil inside my NID box. |
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tschmidt
Premium,MVM
join:2000-11-12
Milford, NH
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| reply to ddietrich
How about a drawing instead of a picture? Load coils are not usually used individually. They are typically packaged in watertight containers and spliced into outside plant cable.
The most popular type of load coil, 88 mh, is used on circuits over 18,000 feet. They are spaced every 6,000 feet starting 3,000 feet from the CO. T1 repeater spacing was designed to use the same spacing.
Load coils flatten the attenuation curve over the 0-4 kHz voice range at the expense of tremendous attenuation above that range making them incompatible with DSL, ISDN and T1. Loading also slows down propagation speed – exacerbating echo problems on long lines. That used to be a problem on analog long distance circuits before digital. |
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Bobcat
Premium
join:2001-02-04
Bedminster, NJ
·Verizon Online DSL
| To add to the above post: When you have a pair of wires, like in a telephone line, there's a capacitance between the wires. Over long distances, this can affect the frequency response and cause distortion. The load coils counteract the capacitance, reducing distortion.
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panth1
The Coyote
join:2000-12-11
Boca Raton, FL | reply to ddietrich
Here is a site that I found on google:
»www.charlesindustries.com/main/t···opg.html |
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53059959
Temp banned from BBR more then anyone
join:2002-10-02
PwnZone | reply to ddietrich
whoa, thats a Load of...coil |
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justin
Australian
join:1999-05-28
Brooklyn, NY
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| reply to ddietrich
Bah! when the old ways are good enough, who needs to rush to change anything anyway? |
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Ryan F
Take Back The Web
Premium
join:2002-10-18
Alexandria, VA |  He's building customer satisfaction into the line? If he only knew just how many future dsl customers he was screwing over. |
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Dennis
Premium,Mod
join:2001-01-26
Algonquin, IL | reply to justin
Heat coils are inside, load coils are outside. They aren't related in form or function. |
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justin
Australian
join:1999-05-28
Brooklyn, NY
Host:
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| said by Dennis :
Heat coils are inside, load coils are outside. They aren't related in form or function.
Who said anything about heat coils? |
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Dennis
Premium,Mod
join:2001-01-26
Algonquin, IL
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| reply to CJPC
said by CJPC :
Really...wow...a tech told me they were inside....i hate stupid techs!
said by justin :
Who said anything about heat coils?
I assumed that the tech CJPC talked to got confused about them and thought they were talking about heat coils. So I figured that this information might help in the future if a tech says a load coil is inside......
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If its a "penny for your thoughts" and I just gave you my $.02....then where's my change? |
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justin
Australian
join:1999-05-28
Brooklyn, NY | ah ok, just you 'reply'd to me, not him hence my confusion. |
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CJPC
Premium
join:2001-02-20
Charlestown, MA
clubs:
| Theres more confusion!
said by CJPC :
i hate stupid techs!
Like i said!
The phone company doesnt seem to like me...ive called and filed a ton of complaints w/ the fcc and the BBB !
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bsd
join:2002-08-17
Pinckney, MI
| reply to ddietrich
Here are pics..
-bsd |
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spg
Grrrr
join:2001-10-31
NOT Texas!
| But this is only part of the picture. These are pics of individual coils used for individual lines. The "typical load coil" is grouped with hundreds of others and found for the most part in manholes.
As mentioned earlier, starting at 3kft and at every 6kft after that, they're spliced into the cable. They're cut in in series, i.e., the wire comes into the splice, goes out a cable stub to a "load pot", through the load coil, out the load pot through the stub and back into the spice and out the cable. At each location, there is a waterproof splice closure. And for the most part, the wires inside the splice are all the same colors and have no individual color code identity. So, tone has to be sent, the correct pair entering the splice found, the same pair leaving the splice found, and the load coil cut out and the pair spliced back together. Sounds simple enough, but sometimes the cables are as large as 3600 pairs or more. So it gets a little tricky.
If I can find some, I'll try to post a pic. No flash in the holes, but perhaps a pole mounted one.
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spg
Grrrr
join:2001-10-31
NOT Texas!
| These are small load pots, the larger one for about 100 pair. They look similar in MHs, but usually are larger for for more pair. Sometimes they bury these too.
That's about all there is. You've seen the coils and the way they look in the field. |
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