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Hello,

I know to use f plugs wherever possible but I need a coax plug to
connect at the back of the tv. I had a quick look on the CPC web site
but they sell aluminium plugs, nickel plated zinc plugs, and plated
brass plugs. Are they all the same or is one better than the others?

Thanks,
Stephen.
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On 07/07/15 16:37, Stephen wrote:
Hello,

I know to use f plugs wherever possible but I need a coax plug to
connect at the back of the tv. I had a quick look on the CPC web site
but they sell aluminium plugs, nickel plated zinc plugs, and plated
brass plugs. Are they all the same or is one better than the others?

Thanks,
Stephen.


In real terms, there isn't much difference. The typical Belling Lee
style TV plug is pretty grim as connectors go but, as they tend to be
only plugged/unplugged once in a while, it doesn't make much difference.

I use whatever I have to hand, mainly aluminium as I happened to pick up
a stock of them for free.

You can get converters so you can use F plugs but, in all honesty, they
can be pretty grim as well, if no fitted correctly. I carry some in my
motorhome as some caravan sites use F sockets on the TV distribution
system and the adaptors are sometimes missing.

I was lucky enough to pick up some nice pre-made F leads for free which
are about a metre long, which I use between the wall plates and the
satellite receivers here.


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On 07/07/2015 17:11, Brian Reay wrote:
On 07/07/15 16:37, Stephen wrote:
Hello,

I know to use f plugs wherever possible but I need a coax plug to
connect at the back of the tv. I had a quick look on the CPC web site
but they sell aluminium plugs, nickel plated zinc plugs, and plated
brass plugs. Are they all the same or is one better than the others?

Thanks,
Stephen.


In real terms, there isn't much difference. The typical Belling Lee
style TV plug is pretty grim as connectors go


Why do punters invariably put the cable grip on upside down?





but, as they tend to be
only plugged/unplugged once in a while, it doesn't make much difference.

I use whatever I have to hand, mainly aluminium as I happened to pick up
a stock of them for free.

You can get converters so you can use F plugs but, in all honesty, they
can be pretty grim as well, if no fitted correctly. I carry some in my
motorhome as some caravan sites use F sockets on the TV distribution
system and the adaptors are sometimes missing.

I was lucky enough to pick up some nice pre-made F leads for free which
are about a metre long, which I use between the wall plates and the
satellite receivers here.



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On 07/07/2015 16:37, Stephen wrote:
Hello,

I know to use f plugs wherever possible but I need a coax plug to
connect at the back of the tv. I had a quick look on the CPC web site
but they sell aluminium plugs, nickel plated zinc plugs, and plated
brass plugs. Are they all the same or is one better than the others?


The plated brass plugs tend to be best IME. CPC also do some quite
decent "screw on" belling lee style plugs that you fit in a similar way
to an F connector.


--
Cheers,

John.

/================================================== ===============\
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I think the real choice is the solder type for the central conductor or the
ones that have a screw to hold it rather than solder.
Of course in practice I guess most in use are solder type but not soldered.
Regards
David



"Brian Reay" wrote in message ...




In real terms, there isn't much difference. The typical Belling Lee
style TV plug is pretty grim as connectors go but, as they tend to be
only plugged/unplugged once in a while, it doesn't make much difference.



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In article , David wrote:
I think the real choice is the solder type for the central conductor or
the ones that have a screw to hold it rather than solder. Of course in
practice I guess most in use are solder type but not soldered. Regards
David


Indeed, a slight kink in the centre wire and it just makes a rubbing
contact with the plug's pin.


"Brian Reay" wrote in message ...





In real terms, there isn't much difference. The typical Belling Lee style
TV plug is pretty grim as connectors go but, as they tend to be only
plugged/unplugged once in a while, it doesn't make much difference.


--
Please note new email address:

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On Tue, 07 Jul 2015 18:45:43 +0100, John Rumm wrote:

On 07/07/2015 16:37, Stephen wrote:
Hello,

I know to use f plugs wherever possible but I need a coax plug to
connect at the back of the tv. I had a quick look on the CPC web site
but they sell aluminium plugs, nickel plated zinc plugs, and plated
brass plugs. Are they all the same or is one better than the others?


The plated brass plugs tend to be best IME. CPC also do some quite
decent "screw on" belling lee style plugs that you fit in a similar way
to an F connector.


Agreed - I bought some plugs from Wilko, as I was desperate for them, and
they were useless as the aluminium had no 'spring'. Got som brass ones asap
and they've been OK for several years.
--
Peter.
The gods will stay away
whilst religions hold sway
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Try to avoid the ally ones as they can get very grotty after a while if
there is any kind of humidity about.

Brian

--
From the Sofa of Brian Gaff Reply address is active
"Stephen" wrote in message
...
Hello,

I know to use f plugs wherever possible but I need a coax plug to
connect at the back of the tv. I had a quick look on the CPC web site
but they sell aluminium plugs, nickel plated zinc plugs, and plated
brass plugs. Are they all the same or is one better than the others?

Thanks,
Stephen.



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On Tue, 07 Jul 2015 18:12:01 +0100, MacDonald
wrote:

On 07/07/2015 17:11, Brian Reay wrote:
On 07/07/15 16:37, Stephen wrote:
Hello,

I know to use f plugs wherever possible but I need a coax plug to
connect at the back of the tv. I had a quick look on the CPC web site
but they sell aluminium plugs, nickel plated zinc plugs, and plated
brass plugs. Are they all the same or is one better than the others?

Thanks,
Stephen.


In real terms, there isn't much difference. The typical Belling Lee
style TV plug is pretty grim as connectors go


Why do punters invariably put the cable grip on upside down?


Not just punters. I corrected some in my daughters house fitted by a
self-styled "AV Consultant".



--

Graham.

%Profound_observation%
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On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always fitted the
segmented end farthest away from the connection end. Am I right or wrong?

Jim


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On Wed, 08 Jul 2015 19:50:05 +0100
Indy Jess John wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always fitted
the segmented end farthest away from the connection end. Am I right
or wrong?

Jim


http://satcure.co.uk/tech/tvplugs.htm

--
Davey.
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On 08/07/2015 19:50, Indy Jess John wrote:
On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.


We were taught how to fit them properly at college some 15 years ago
as part of out very first practical exam' along with fitting 13A plugs.





There is a continuous end and a segmented end. I have always fitted the
segmented end farthest away from the connection end. Am I right or wrong?

Jim


The segmented end faces away from the plug tip.


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"Davey" wrote in message
...
On Wed, 08 Jul 2015 19:50:05 +0100
Indy Jess John wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always fitted
the segmented end farthest away from the connection end. Am I right
or wrong?


I can understand the mistake of fitting the cable grip upside down, given
that the cylindrical metal shroud of the plug often has a conical
indentation at the cable end into which the conical end of an upside-down
cable clamp fits nicely. I've even seen plugs with the clamp already
inserted upside down so a punter would naturally assume that when he has
removed it to fit onto the cable it should remain in that orientation.

I've never heard of soldering the central core to the centre pin of the
plug. I was told to use fine-nosed pliers to crimp a slight kink in the core
so it will make good contact with the inside of the centre pin.

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"MacDonald" wrote in message
...
On 08/07/2015 19:50, Indy Jess John wrote:
On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.


We were taught how to fit them properly at college some 15 years ago
as part of out very first practical exam' along with fitting 13A plugs.





There is a continuous end and a segmented end. I have always fitted the
segmented end farthest away from the connection end. Am I right or
wrong?


The segmented end faces away from the plug tip.


I'm amazed that isn't obvious to everyone.



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"NY" wrote in message
o.uk...
"Davey" wrote in message
...
On Wed, 08 Jul 2015 19:50:05 +0100
Indy Jess John wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always fitted
the segmented end farthest away from the connection end. Am I right
or wrong?


I can understand the mistake of fitting the cable grip upside down, given
that the cylindrical metal shroud of the plug often has a conical
indentation at the cable end into which the conical end of an upside-down
cable clamp fits nicely. I've even seen plugs with the clamp already
inserted upside down so a punter would naturally assume that when he has
removed it to fit onto the cable it should remain in that orientation.

I've never heard of soldering the central core to the centre pin of the
plug.


I've done it any other way.

I was told to use fine-nosed pliers to crimp a slight kink in the core so
it will make good contact with the inside of the centre pin.


I was never told by anyone how to use them, in person or in instructions.



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In article ,
Indy Jess John wrote:
On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?


Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.


The BBC booklet TV Tansmiiting stations used to publish a re-drawn Belling
Lee picture.

There is a continuous end and a segmented end. I have always fitted the
segmented end farthest away from the connection end. Am I right or wrong?


The segmented end should grip on the braid when the connector is screwed
together, Segmented end away from the central pin.

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In article ,
NY wrote:
"Davey" wrote in message
...
On Wed, 08 Jul 2015 19:50:05 +0100
Indy Jess John wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always fitted
the segmented end farthest away from the connection end. Am I right
or wrong?


I can understand the mistake of fitting the cable grip upside down, given
that the cylindrical metal shroud of the plug often has a conical
indentation at the cable end into which the conical end of an upside-down
cable clamp fits nicely. I've even seen plugs with the clamp already
inserted upside down so a punter would naturally assume that when he has
removed it to fit onto the cable it should remain in that orientation.


I've never heard of soldering the central core to the centre pin of the
plug. I was told to use fine-nosed pliers to crimp a slight kink in the
core so it will make good contact with the inside of the centre pin.


oh dear.

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In message , Davey
writes
On Wed, 08 Jul 2015 19:50:05 +0100
Indy Jess John wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always fitted
the segmented end farthest away from the connection end. Am I right
or wrong?

Jim


http://satcure.co.uk/tech/tvplugs.htm

Images 9 (the one with the fingers) and 10 are wrong. The braid of the
coax should be splayed out radially, lightly sandwiched between the
clamp and the body, trimmed to very slightly more than the diameter of
the clamp - and then the 'nut' tightened up.

That said, I have been known to do it the way shown - especially when I
found myself making a right pig's ear of the proper way!
--
Ian
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On 08/07/15 20:18, NY wrote:
I've never heard of soldering the central core to the centre pin of the
plug.


I've always done them that way if I had a soldering ioron handy


--
New Socialism consists essentially in being seen to have your heart in
the right place whilst your head is in the clouds and your hand is in
someone else's pocket.
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In message , Charles Hope
writes



I've never heard of soldering the central core to the centre pin of the
plug. I was told to use fine-nosed pliers to crimp a slight kink in the
core so it will make good contact with the inside of the centre pin.


oh dear.


I've only kinked the inner when I didn't have a soldering iron at hand -
and then it was a sufficiently kinky kink to require a very firm push to
insert it through the pin.
--
Ian


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"Rod Speed" wrote in message
...


"NY" wrote in message
o.uk...
"Davey" wrote in message
...
On Wed, 08 Jul 2015 19:50:05 +0100
Indy Jess John wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always fitted
the segmented end farthest away from the connection end. Am I right
or wrong?


I can understand the mistake of fitting the cable grip upside down, given
that the cylindrical metal shroud of the plug often has a conical
indentation at the cable end into which the conical end of an upside-down
cable clamp fits nicely. I've even seen plugs with the clamp already
inserted upside down so a punter would naturally assume that when he has
removed it to fit onto the cable it should remain in that orientation.

I've never heard of soldering the central core to the centre pin of the
plug.


I've done it any other way.

I was told to use fine-nosed pliers to crimp a slight kink in the core so
it will make good contact with the inside of the centre pin.


I was never told by anyone how to use them, in person or in instructions.


Understandable as you live in Australia, are Australian and like all
Australians are as thick and as much use as pig ****.






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"Ian Jackson" wrote in message
...
In message , Charles Hope
writes


I've never heard of soldering the central core to the centre pin of
the
plug. I was told to use fine-nosed pliers to crimp a slight kink in
the
core so it will make good contact with the inside of the centre pin.


oh dear.


I've only kinked the inner when I didn't have a soldering iron at
hand - and then it was a sufficiently kinky kink to require a very
firm push to insert it through the pin.


I've rarely been able to get the inner straight enough that it didn't.

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On Wed, 08 Jul 2015 21:14:07 +0100, Charles Hope
wrote:

In article ,
Indy Jess John wrote:
On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?


Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.


The BBC booklet TV Tansmiiting stations used to publish a re-drawn Belling
Lee picture.

There is a continuous end and a segmented end. I have always fitted the
segmented end farthest away from the connection end. Am I right or wrong?


The segmented end should grip on the braid when the connector is screwed
together, Segmented end away from the central pin.


No it shouldn't. The segmented end grips the outer insulation. The
braid goes right through the segmented piece and out of the plain
end, where it is splayed out like a chimney sweep's brush, then
trimmed into a circle. When the nut is tightened, it forces the
segmented piece to grip the insulation, at the same time pressing the
plain end to grip the sweep's brush between it and the plastic that
holds the centre pin.
--
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On 08/07/2015 20:18, NY wrote:


I've never heard of soldering the central core to the centre pin of the
plug. I was told to use fine-nosed pliers to crimp a slight kink in the
core so it will make good contact with the inside of the centre pin.



In my youth I seem to remember high quality plugs with a small grub
screw on the plastic spacer for the purpose - haven't seen one like that
for a good while however.



--
CB
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In article ,
CB wrote:
On 08/07/2015 20:18, NY wrote:



I've never heard of soldering the central core to the centre pin of the
plug. I was told to use fine-nosed pliers to crimp a slight kink in the
core so it will make good contact with the inside of the centre pin.



In my youth I seem to remember high quality plugs with a small grub
screw on the plastic spacer for the purpose - haven't seen one like that
for a good while however.


any right angle one that I've seen uses a grub screw.



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CB wrote:

In my youth I seem to remember high quality plugs with a small grub
screw on the plastic spacer for the purpose - haven't seen one like that
for a good while however.


The metal Maplin ones have a grub screw

http://www.maplin.co.uk/p/high-quali...oax-plug-fd85g

According to the reviews, even the cheapo plastic ones have a screw, but
it doesn't work too well ...

http://www.maplin.co.uk/p/plastic-coax-plug-yw08j

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In message , Ian Jackson
writes
In message , Davey
writes
On Wed, 08 Jul 2015 19:50:05 +0100
Indy Jess John wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always fitted
the segmented end farthest away from the connection end. Am I right
or wrong?

Jim


http://satcure.co.uk/tech/tvplugs.htm

Images 9 (the one with the fingers) and 10 are wrong. The braid of the
coax should be splayed out radially, lightly sandwiched between the
clamp and the body, trimmed to very slightly more than the diameter of
the clamp - and then the 'nut' tightened up.

That said, I have been known to do it the way shown - especially when I
found myself making a right pig's ear of the proper way!


Just to follow up - this is the correct way to deal with the braid - and
centre pin.
http://www.megalithia.com/elect/bellinglee/
--
Ian
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On Wed, 08 Jul 2015 21:15:32 +0100, Charles Hope
wrote:

In article ,
NY wrote:
"Davey" wrote in message
...
On Wed, 08 Jul 2015 19:50:05 +0100
Indy Jess John wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always fitted
the segmented end farthest away from the connection end. Am I right
or wrong?


I can understand the mistake of fitting the cable grip upside down, given
that the cylindrical metal shroud of the plug often has a conical
indentation at the cable end into which the conical end of an upside-down
cable clamp fits nicely. I've even seen plugs with the clamp already
inserted upside down so a punter would naturally assume that when he has
removed it to fit onto the cable it should remain in that orientation.


I've never heard of soldering the central core to the centre pin of the
plug. I was told to use fine-nosed pliers to crimp a slight kink in the
core so it will make good contact with the inside of the centre pin.


oh dear.



It was a lot more important to solder the inner when TV was delivered
via VHF especially Band I

Also not soldering the inner of a B.L plug that is carrying DC to a
masthead amp is asking for trouble.

--

Graham.

%Profound_observation%
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In article , Graham.
wrote:
On Wed, 08 Jul 2015 21:15:32 +0100, Charles Hope
wrote:


In article , NY
wrote:
"Davey" wrote in message
...
On Wed, 08 Jul 2015 19:50:05 +0100 Indy Jess John
wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always
fitted the segmented end farthest away from the connection end. Am
I right or wrong?


I can understand the mistake of fitting the cable grip upside down,
given that the cylindrical metal shroud of the plug often has a
conical indentation at the cable end into which the conical end of an
upside-down cable clamp fits nicely. I've even seen plugs with the
clamp already inserted upside down so a punter would naturally assume
that when he has removed it to fit onto the cable it should remain in
that orientation.


I've never heard of soldering the central core to the centre pin of
the plug. I was told to use fine-nosed pliers to crimp a slight kink
in the core so it will make good contact with the inside of the centre
pin.


oh dear.



It was a lot more important to solder the inner when TV was delivered via
VHF especially Band I


I'd expect far greater losses from an un-soldered joint at Band V

Also not soldering the inner of a B.L plug that is carrying DC to a
masthead amp is asking for trouble.


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On Thu, 09 Jul 2015 19:26:35 +0100, Charles Hope
wrote:

In article , Graham.
wrote:
On Wed, 08 Jul 2015 21:15:32 +0100, Charles Hope
wrote:


In article , NY
wrote:
"Davey" wrote in message
...
On Wed, 08 Jul 2015 19:50:05 +0100 Indy Jess John
wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always
fitted the segmented end farthest away from the connection end. Am
I right or wrong?

I can understand the mistake of fitting the cable grip upside down,
given that the cylindrical metal shroud of the plug often has a
conical indentation at the cable end into which the conical end of an
upside-down cable clamp fits nicely. I've even seen plugs with the
clamp already inserted upside down so a punter would naturally assume
that when he has removed it to fit onto the cable it should remain in
that orientation.

I've never heard of soldering the central core to the centre pin of
the plug. I was told to use fine-nosed pliers to crimp a slight kink
in the core so it will make good contact with the inside of the centre
pin.

oh dear.



It was a lot more important to solder the inner when TV was delivered via
VHF especially Band I


I'd expect far greater losses from an un-soldered joint at Band V


It's a commonly held view given that feeder losses are so much greater
at UHF, but it's wrong.

Even if it's open circuit at DC there will still be a few picofarads
of capacitance, and capacitive reactance decreases as the frequency
increases.


--

Graham.

%Profound_observation%


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Default tv coax plugs

In article , Graham.
wrote:
On Thu, 09 Jul 2015 19:26:35 +0100, Charles Hope
wrote:


In article , Graham.
wrote:
On Wed, 08 Jul 2015 21:15:32 +0100, Charles Hope
wrote:


In article , NY
wrote:
"Davey" wrote in message
...
On Wed, 08 Jul 2015 19:50:05 +0100 Indy Jess John
wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I
have never seen anything resembling an installation diagram or
fitting instructions.

There is a continuous end and a segmented end. I have always
fitted the segmented end farthest away from the connection end.
Am I right or wrong?

I can understand the mistake of fitting the cable grip upside down,
given that the cylindrical metal shroud of the plug often has a
conical indentation at the cable end into which the conical end of
an upside-down cable clamp fits nicely. I've even seen plugs with
the clamp already inserted upside down so a punter would naturally
assume that when he has removed it to fit onto the cable it should
remain in that orientation.

I've never heard of soldering the central core to the centre pin of
the plug. I was told to use fine-nosed pliers to crimp a slight
kink in the core so it will make good contact with the inside of
the centre pin.

oh dear.



It was a lot more important to solder the inner when TV was delivered
via VHF especially Band I


I'd expect far greater losses from an un-soldered joint at Band V


It's a commonly held view given that feeder losses are so much greater at
UHF, but it's wrong.


How about reading the manufacturers tables?
eg: URM43. 100MHz loss 13dB/100m
600MHz 34

URM67 50 MHz 4.5
800 MHz 18

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Posts: 630
Default tv coax plugs

On Thu, 09 Jul 2015 21:32:55 +0100, Charles Hope
wrote:

In article , Graham.
wrote:
On Thu, 09 Jul 2015 19:26:35 +0100, Charles Hope
wrote:


In article , Graham.
wrote:
On Wed, 08 Jul 2015 21:15:32 +0100, Charles Hope
wrote:

In article , NY
wrote:
"Davey" wrote in message
...
On Wed, 08 Jul 2015 19:50:05 +0100 Indy Jess John
wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I
have never seen anything resembling an installation diagram or
fitting instructions.

There is a continuous end and a segmented end. I have always
fitted the segmented end farthest away from the connection end.
Am I right or wrong?

I can understand the mistake of fitting the cable grip upside down,
given that the cylindrical metal shroud of the plug often has a
conical indentation at the cable end into which the conical end of
an upside-down cable clamp fits nicely. I've even seen plugs with
the clamp already inserted upside down so a punter would naturally
assume that when he has removed it to fit onto the cable it should
remain in that orientation.

I've never heard of soldering the central core to the centre pin of
the plug. I was told to use fine-nosed pliers to crimp a slight
kink in the core so it will make good contact with the inside of
the centre pin.

oh dear.


It was a lot more important to solder the inner when TV was delivered
via VHF especially Band I

I'd expect far greater losses from an un-soldered joint at Band V


It's a commonly held view given that feeder losses are so much greater at
UHF, but it's wrong.


How about reading the manufacturers tables?
eg: URM43. 100MHz loss 13dB/100m
600MHz 34

URM67 50 MHz 4.5
800 MHz 18



I'll repeat it and highlight the important word.

It's a commonly held view **given** that feeder losses are so much
greater at UHF, but it's wrong.

The view that the same amount capacitive coupling attenuates the
signal more at UHF than at VHF is wrong,

Feeder losses increase with frequency, that's a given!



--

Graham.

%Profound_observation%
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"Charles Hope" wrote in message
...
In article , Graham.
wrote:
On Thu, 09 Jul 2015 19:26:35 +0100, Charles Hope
wrote:


In article , Graham.
wrote:
On Wed, 08 Jul 2015 21:15:32 +0100, Charles Hope
wrote:

In article , NY
wrote:
"Davey" wrote in message
...
On Wed, 08 Jul 2015 19:50:05 +0100 Indy Jess John
wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I
have never seen anything resembling an installation diagram or
fitting instructions.

There is a continuous end and a segmented end. I have always
fitted the segmented end farthest away from the connection end.
Am I right or wrong?

I can understand the mistake of fitting the cable grip upside down,
given that the cylindrical metal shroud of the plug often has a
conical indentation at the cable end into which the conical end of
an upside-down cable clamp fits nicely. I've even seen plugs with
the clamp already inserted upside down so a punter would naturally
assume that when he has removed it to fit onto the cable it should
remain in that orientation.

I've never heard of soldering the central core to the centre pin of
the plug. I was told to use fine-nosed pliers to crimp a slight
kink in the core so it will make good contact with the inside of
the centre pin.

oh dear.


It was a lot more important to solder the inner when TV was delivered
via VHF especially Band I

I'd expect far greater losses from an un-soldered joint at Band V


It's a commonly held view given that feeder losses are so much greater at
UHF, but it's wrong.


How about reading the manufacturers tables?
eg: URM43. 100MHz loss 13dB/100m
600MHz 34

URM67 50 MHz 4.5
800 MHz 18


That isn't the loss in an unsoldered center pin connector.

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On 07/07/2015 18:45, John Rumm wrote:

The plated brass plugs tend to be best IME. CPC also do some quite
decent "screw on" belling lee style plugs that you fit in a similar way
to an F connector.


The are vastly better connectors than the old Belling-Lee around in the
TV/AV world these days.

For DIY use the Cabelcon 'self-install' products (no crimp or axial
compression tools required) are really good. Here's a selection from Ebay

http://www.ebay.co.uk/sch/i.html?_od...stall&_sacat=0

There's also these neat right-angle versions

http://www.cabelcon.dk/download/IEC90_SI_120912.pdf

--
Andy
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On 08/07/2015 19:58, Davey wrote:
On Wed, 08 Jul 2015 19:50:05 +0100
Indy Jess wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always fitted
the segmented end farthest away from the connection end. Am I right
or wrong?

Jim


http://satcure.co.uk/tech/tvplugs.htm

Thanks. I have been doing it right.

Jim



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Posts: 6,896
Default tv coax plugs


I can understand the mistake of fitting the cable grip upside down,
given that the cylindrical metal shroud of the plug often has a
conical indentation at the cable end into which the conical end of
an upside-down cable clamp fits nicely. I've even seen plugs with
the clamp already inserted upside down so a punter would naturally
assume that when he has removed it to fit onto the cable it should
remain in that orientation.

I've never heard of soldering the central core to the centre pin of
the plug. I was told to use fine-nosed pliers to crimp a slight
kink in the core so it will make good contact with the inside of
the centre pin.

oh dear.


It was a lot more important to solder the inner when TV was delivered
via VHF especially Band I

I'd expect far greater losses from an un-soldered joint at Band V


It's a commonly held view given that feeder losses are so much greater at
UHF, but it's wrong.


How about reading the manufacturers tables?
eg: URM43. 100MHz loss 13dB/100m
600MHz 34

URM67 50 MHz 4.5
800 MHz 18


He's right on that one!.

And thats taking decent cables, not the ones sold for TV use that have
sod all copper in them.

I believe the noble member for Rotherham Lord W Wright did quite a bit
of work on that a while ago?..
--
Tony Sayer




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In article ,
says...

In message , Ian Jackson
writes
In message , Davey
writes
On Wed, 08 Jul 2015 19:50:05 +0100
Indy Jess John wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always fitted
the segmented end farthest away from the connection end. Am I right
or wrong?

Jim

http://satcure.co.uk/tech/tvplugs.htm

Images 9 (the one with the fingers) and 10 are wrong. The braid of the
coax should be splayed out radially, lightly sandwiched between the
clamp and the body, trimmed to very slightly more than the diameter of
the clamp - and then the 'nut' tightened up.

That said, I have been known to do it the way shown - especially when I
found myself making a right pig's ear of the proper way!


Just to follow up - this is the correct way to deal with the braid - and
centre pin.
http://www.megalithia.com/elect/bellinglee/


If the cable has a generous quantity of braid (as it should have) this wont
work because there is not room inside the body to accept both clamp and
braid.

The correct way - based on pictures provided by Belling & Lee 50 years ago
but recreated from memory - is as shown he

http://i260.photobucket.com/albums/i...oto/tv/BL1.png
http://i260.photobucket.com/albums/i...oto/tv/BL2.png
http://i260.photobucket.com/albums/i...oto/tv/BL3.png

It will probably be found easier to solder the centre pin first - this should
make it easier to trim the braid with flush bladed cutters.

The ring of braid compressed between the clamp and the insulator when the
plug is assembled provides a true coaxial termination.

--

Terry
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In message ,
Terry Casey writes
In article ,
says...

In message , Ian Jackson
writes
In message , Davey
writes
On Wed, 08 Jul 2015 19:50:05 +0100
Indy Jess John wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always fitted
the segmented end farthest away from the connection end. Am I right
or wrong?

Jim

http://satcure.co.uk/tech/tvplugs.htm

Images 9 (the one with the fingers) and 10 are wrong. The braid of the
coax should be splayed out radially, lightly sandwiched between the
clamp and the body, trimmed to very slightly more than the diameter of
the clamp - and then the 'nut' tightened up.

That said, I have been known to do it the way shown - especially when I
found myself making a right pig's ear of the proper way!


Just to follow up - this is the correct way to deal with the braid - and
centre pin.
http://www.megalithia.com/elect/bellinglee/


If the cable has a generous quantity of braid (as it should have) this wont
work because there is not room inside the body to accept both clamp and
braid.

The correct way - based on pictures provided by Belling & Lee 50 years ago
but recreated from memory - is as shown he

http://i260.photobucket.com/albums/i...oto/tv/BL1.png
http://i260.photobucket.com/albums/i...oto/tv/BL2.png
http://i260.photobucket.com/albums/i...oto/tv/BL3.png

It will probably be found easier to solder the centre pin first - this should
make it easier to trim the braid with flush bladed cutters.

The ring of braid compressed between the clamp and the insulator when the
plug is assembled provides a true coaxial termination.

Those drawings show essentially what I described. The text says "Now do
a haircutting action - trim the braid as close to the aluminium part as
possible and smooth what's left back along the cable". I take that as
meaning "Try to trim off most of the splayed braiding - but it's OK to
leave a few longer strands on".
--
Ian
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In article ,
says...

In message ,
Terry Casey writes
In article ,
says...

In message , Ian Jackson
writes
In message , Davey
writes
On Wed, 08 Jul 2015 19:50:05 +0100
Indy Jess John wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I have
never seen anything resembling an installation diagram or fitting
instructions.

There is a continuous end and a segmented end. I have always fitted
the segmented end farthest away from the connection end. Am I right
or wrong?

Jim

http://satcure.co.uk/tech/tvplugs.htm

Images 9 (the one with the fingers) and 10 are wrong. The braid of the
coax should be splayed out radially, lightly sandwiched between the
clamp and the body, trimmed to very slightly more than the diameter of
the clamp - and then the 'nut' tightened up.

That said, I have been known to do it the way shown - especially when I
found myself making a right pig's ear of the proper way!

Just to follow up - this is the correct way to deal with the braid - and
centre pin.
http://www.megalithia.com/elect/bellinglee/


If the cable has a generous quantity of braid (as it should have) this wont
work because there is not room inside the body to accept both clamp and
braid.

The correct way - based on pictures provided by Belling & Lee 50 years ago
but recreated from memory - is as shown he

http://i260.photobucket.com/albums/i...oto/tv/BL1.png
http://i260.photobucket.com/albums/i...oto/tv/BL2.png
http://i260.photobucket.com/albums/i...oto/tv/BL3.png

It will probably be found easier to solder the centre pin first - this should
make it easier to trim the braid with flush bladed cutters.

The ring of braid compressed between the clamp and the insulator when the
plug is assembled provides a true coaxial termination.

Those drawings show essentially what I described. The text says "Now do
a haircutting action - trim the braid as close to the aluminium part as
possible and smooth what's left back along the cable". I take that as
meaning "Try to trim off most of the splayed braiding - but it's OK to
leave a few longer strands on".


The distinction I was trying to make is that, using cable with significantly
more braid than in the pictures you previously linked to, it will be
impossible to get the clamp into the body BEFORE it is trimmed, thus the need
to trim it as closely as possible to the clamp/insulator assembly.

If you gave me a piece of coax with as skimpy a braid as that in those
photographs, I throw the cable away and start again with something decent!

--

Terry
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On 09/07/2015 21:32, Charles Hope wrote:
In article , Graham.
wrote:
On Thu, 09 Jul 2015 19:26:35 +0100, Charles Hope
wrote:


In article , Graham.
wrote:
On Wed, 08 Jul 2015 21:15:32 +0100, Charles Hope
wrote:

In article , NY
wrote:
"Davey" wrote in message
...
On Wed, 08 Jul 2015 19:50:05 +0100 Indy Jess John
wrote:

On 07/07/2015 18:12, MacDonald wrote:

Why do punters invariably put the cable grip on upside down?


Because there are no instructions with it when you buy one?

Perhaps I am one of those who fits them upside down, because I
have never seen anything resembling an installation diagram or
fitting instructions.

There is a continuous end and a segmented end. I have always
fitted the segmented end farthest away from the connection end.
Am I right or wrong?

I can understand the mistake of fitting the cable grip upside down,
given that the cylindrical metal shroud of the plug often has a
conical indentation at the cable end into which the conical end of
an upside-down cable clamp fits nicely. I've even seen plugs with
the clamp already inserted upside down so a punter would naturally
assume that when he has removed it to fit onto the cable it should
remain in that orientation.

I've never heard of soldering the central core to the centre pin of
the plug. I was told to use fine-nosed pliers to crimp a slight
kink in the core so it will make good contact with the inside of
the centre pin.

oh dear.


It was a lot more important to solder the inner when TV was delivered
via VHF especially Band I

I'd expect far greater losses from an un-soldered joint at Band V


It's a commonly held view given that feeder losses are so much greater at
UHF, but it's wrong.


How about reading the manufacturers tables?
eg: URM43. 100MHz loss 13dB/100m
600MHz 34

URM67 50 MHz 4.5
800 MHz 18


Note sure if that adds anything... he just said that the feeder losses
are higher at UHF, but that does not necessarily mean that termination
losses are as well.




--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/
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