Getting NTL Installed on 7th Sept - need advice for my electrician

In message . com,
writes
Colin Stamp wrote:
So looks like it's definitely 75 ohm co-ax with F-TYPE/SMA
connectivity. Any challenges to that?

I'm now assuming they split the cable three ways i.e. for Phone box,
Internet Cable Modem and STB; all three devices take SMA/F-TYPE in and
job's a good'un. In which case I should be laughing

Regards - Tim Scarfe



What is an F-TYPE/SMA connector? I always thought they were F on NTLs
coax, have they started to use SMA now as well?
--
Bill

BJ/John:

Many thanks for your insights; they have been a life-saver!

What is an F-TYPE/SMA connector? I always thought they were F on NTLs
coax, have they started to use SMA now as well?

Hi Bill:

I may be wrong but I am assuming an F-TYPE is the same as a SMA
connector. This is going back to my amateur radio days though so I may
be wrong.

I've just checked wikipedia and it seems to conflict with my
assumption:

http://en.wikipedia.org/wiki/SMA_connector

I always assumed the tiny SMA connector on WIFI equipment/high
frequency radio equipment was known as "mini-SMA" and the F-TYPE form
factor was known as "SMA".

I'll just stick with F-TYPE then

In message .com,
writes
BJ/John:

Many thanks for your insights; they have been a life-saver!

What is an F-TYPE/SMA connector? I always thought they were F on NTLs
coax, have they started to use SMA now as well?

Hi Bill:

I may be wrong but I am assuming an F-TYPE is the same as a SMA
connector. This is going back to my amateur radio days though so I may
be wrong.

I've just checked wikipedia and it seems to conflict with my
assumption:

http://en.wikipedia.org/wiki/SMA_connector

I always assumed the tiny SMA connector on WIFI equipment/high
frequency radio equipment was known as "mini-SMA" and the F-TYPE form
factor was known as "SMA".

I'll just stick with F-TYPE then


Hi
the F type is one of the most horrific connectors invented by
man, there have been some dire twist on ones that even if fitted
"correctly" had a tendency to fall off. The crimp ones are somewhat
better, but if you take a look at one you will see that it uses the
centre conductor as the pin. Ugh
SMA on the other hand are professional and decent!

http://en.wikipedia.org/wiki/F_connector



--
Bill

In message , Bill
writes
In message .com,
writes
BJ/John:

Many thanks for your insights; they have been a life-saver!

What is an F-TYPE/SMA connector? I always thought they were F on NTLs
coax, have they started to use SMA now as well?

Hi Bill:

I may be wrong but I am assuming an F-TYPE is the same as a SMA
connector. This is going back to my amateur radio days though so I may
be wrong.

I've just checked wikipedia and it seems to conflict with my
assumption:

http://en.wikipedia.org/wiki/SMA_connector

I always assumed the tiny SMA connector on WIFI equipment/high
frequency radio equipment was known as "mini-SMA" and the F-TYPE form
factor was known as "SMA".

I'll just stick with F-TYPE then


Hi
the F type is one of the most horrific connectors invented by
man, there have been some dire twist on ones that even if fitted
"correctly" had a tendency to fall off. The crimp ones are somewhat
better, but if you take a look at one you will see that it uses the
centre conductor as the pin. Ugh
SMA on the other hand are professional and decent!

http://en.wikipedia.org/wiki/F_connector




It's a case of 'horses for courses'. There's essentially nothing wrong
with F-connectors. Cheap and cheerful, cost effective, and more than
good enough for the job.

Even the twist-on ones are OK. You just have to know how to do it right.
Done right, you can't get them off again! Anyway, I think you'll find
that NTL and Telewest use snap-and-seal.

And using the centre conductor as the pin is one way of helping to
preserve the characteristic impedance.

Ian.
--

In article , Ian Jackson IanJackson
writes
In message , Bill
writes
In message .com,
writes
BJ/John:

Many thanks for your insights; they have been a life-saver!

What is an F-TYPE/SMA connector? I always thought they were F on NTLs
coax, have they started to use SMA now as well?

Hi Bill:

I may be wrong but I am assuming an F-TYPE is the same as a SMA
connector. This is going back to my amateur radio days though so I may
be wrong.

I've just checked wikipedia and it seems to conflict with my
assumption:

http://en.wikipedia.org/wiki/SMA_connector

I always assumed the tiny SMA connector on WIFI equipment/high
frequency radio equipment was known as "mini-SMA" and the F-TYPE form
factor was known as "SMA".

I'll just stick with F-TYPE then


Hi
the F type is one of the most horrific connectors invented by
man, there have been some dire twist on ones that even if fitted
"correctly" had a tendency to fall off. The crimp ones are somewhat
better, but if you take a look at one you will see that it uses the
centre conductor as the pin. Ugh
SMA on the other hand are professional and decent!

http://en.wikipedia.org/wiki/F_connector




It's a case of 'horses for courses'. There's essentially nothing wrong
with F-connectors. Cheap and cheerful, cost effective, and more than
good enough for the job.

Even the twist-on ones are OK. You just have to know how to do it right.
Done right, you can't get them off again! Anyway, I think you'll find
that NTL and Telewest use snap-and-seal.

And using the centre conductor as the pin is one way of helping to
preserve the characteristic impedance.

Ian.

The crimp ones that ntl use are very well crimped and sealed as I tried
to get one undone the other day!. In fact their much better than that
real abortion the Belling Lee co-ax plug!.

Don't know what people find wrong with them for the job they do?...
--
Tony Sayer

On 7th Sept I'm getting NTL installed with TV, 10MB Internet + Phone.
I've just bought this house and I'm doing everything up i.e. I have the
luxury of having an electrician wire in a bunch of cat 6 patches
between the rooms etc.

Is this an electrician or a network engineer? To get gigabyte performance
from Cat 6 the cables need to be put in properly. Any idiot can lay cables
but Cat6 is FAR more sensitive than 240V mains. A common problem is making
bends too tight, stretching the cable, failing to wire to the patch panel
properly. A proper installer will use proper diagnostic tools (costing
hundreds of pounds) to produce a thorough analysis of the install showing
the performance you will get by using it.

I'll bet your electrician installs the cables, then does something like
plugs a PC into one end, your router to the web in the other, surfs the web
a bit and says "perfect" - and the throughput will be anywhere from gigabit
to 10s megabits/second. Can't soften the blow other than to say that you
won't be alone in assuming any fool can install network cables. Possibly
your guy will do a good job, but you get what you pay for!

Finally, don't assume you can test if with a PC. Few PCs are capable of
throwing gigabit performance at a cable and they certainly won't be
measuring error rates etc.

Paul DS.