Thread: tv coax plugs
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Graham.[_5_] Graham.[_5_] is offline
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Default tv coax plugs

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%