Cat5 305m?

[garlicbread]

Just having a discussion about this at work and still can't find the answer, does anyone know why data cables cat5/6 etc come in 305 meter coils.
Is this something to do with the max length of signal it can carry or something?
Seems a very specific number?

 

[Grenage]

Because it's 1000 feet.

100m is the recommended maximum run - or 90m with 10m patch allowance is sensible. This is assuming a basic 100Mb network on CAT5e.

 

[JohnW2]

...does anyone know why data cables cat5/6 etc come in 305 meter coils.... Seems a very specific number?

I presume it's a modern incarnation of 1000 feet!

Kind Regards, John
Edit: Damn - slow typing again

 

[Belboz]

Edited

 

[ban-all-sheds]

It's 1000'.

 

[Taylortwocities]

Bloomin Europe

What was wrong with Rods, Poles and Perches??

 

[JohnW2]

Bloomin Europe ... What was wrong with Rods, Poles and Perches??

Quite so. The three are, of course the same, and maybe the Cat5e drums were meant to be 60 rods (or poles or perches) - with just a little spare for the terminations!

Kind Regards, John

 

[EFLImpudence]

Bloomin Europe ... What was wrong with Rods, Poles and Perches??

Yeah, what could be simpler?

As a unit of area, a square perch (the perch being standardized to equal 16 1⁄2 feet, or 5 1⁄2 yards) is equal to a square rod, 30 1⁄4 square yards (25.29 square metres) or 0.00625 acres, or 1/160 acre. There are 40 square perches to a rood (A rectangular area with edges of one furlong (10 chains i.e. 40 rods) and one rod respectively), and 160 square perches to an acre (an area one furlong by one chain (i.e. 4 rods)). This unit is usually referred to as a perch or pole even though square perch and square pole were the more precise terms. Confusingly, rod was used as a unit of area but it meant a rood.
However in the traditional French-based system in some countries, 1 square perche is 42.21 square metres. - Wikipedia.

 

[OwainDIYer]

Bloomin Europe

More likely the good ol' US of A.

They still measure things in foot-gallons per degree Fahr and other strange combinations.

 

[Astra99]

The Imperial system of measurements was adopted by the United States (with slight differences in pints and gallons due to, IIRC, George III). Whereas we have complied with the will of the "thick" Europeans who can only multiply and divide by 10, the Yanks, thank goodness, have resisted the metric system. I remember learning 16ozs=1lb, 14lb=1stone, 8 stones = 1cwt, 20cwt= 1 ton. Also 12ins= 1ft, 3ft=1yard, 22yards=1chain, 10 chains=1furlong, 8furlongs=1mile! 1 mile = 5280 feet or 1760 yards.

They put a man on the moon using yards, feet, inches, pounds and stones. Stuff yer meters and kilos!

 

[Taylortwocities]

Do you remember those old school exercise books that had all of that stuff on the back cover…….??

Untitled

• Taylortwocities
• 30 Aug 2014
• 1

 

[JohnW2]

Do you remember those old school exercise books that had all of that stuff on the back cover…….??

Even if I could not remember, I still have some (with aged red covers, and containing my 50-something year-old writing) to look at to remind me

Kind Regards, John

 

[garlicbread]

ahh ok, i didnt click, should of realised!

cheers

 

[ban-all-sheds]

I remember learning 16ozs=1lb, 14lb=1stone, 8 stones = 1cwt, 20cwt= 1 ton. Also 12ins= 1ft, 3ft=1yard, 22yards=1chain, 10 chains=1furlong, 8furlongs=1mile! 1 mile = 5280 feet or 1760 yards!

But what about pottles, pecks, tuffets, strikes & combs?