Increasing Cable TV signal strength
 

On Fri, 10 Feb 2012 06:17:03 -0800 (PST), JIMMIE
wrote:

Jeff, I installed TVRO systems for several years and used a lot of F
connectors. Suprisingly the ones I found that worked best were the
ultra cheap ones that only took a pair of pliers to fasten These were
the ones with the separate crimp rings. Used with some good quality
heat shrink tubing this eliminated most of the problems you mention. I
dont know why these connectors went away, my only guess is that
someone wasn't making enough money on them.

Jimmie

Yech...

Please try this test. Insert such a crimp type F connector and cable
into some useless piece of equipment with a type F jack. Pull on the
cable hard. In my experience, it doesn't take much to make the cable
and connector part ways. Repeat with a screw on connector. Now,
repeat the experiment using a properly assembled compression type F
connector and cable. It takes considerably more brute force to break
the connection. I think the official minimum pull test is 55 lbs, but
I'm too lazy to Google for it now.

Hiding the workmanship under shrink tube is not very functional. It
will have little effect on the pull test.

Most of the cable leakage problems I've seen (and found) were due to
crimp type F connectors coming apart or badly crimped. That includes
both the hex shaped crimp, and ones held together with a crimped ring.

Bad:
http://www.fconnector.org/wp-content/uploads/2011/12/F-Connector2.jpg

Worse:
http://www.showmecables.com/images/catalog/product/F-connector-RG59.jpg.ashx?format=jpg

Good:
http://images.lowes.com/product/converted/783250/783250926510lg.jpg



--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

Increasing Cable TV signal strength
 

On Thu, 09 Feb 2012 20:27:00 -0800, The_Giant_Rat_of_Sumatra
wrote:

On Thu, 09 Feb 2012 16:02:35 +0000, Pomegranate *******
wrote:

On Thu, 09 Feb 2012 06:44:45 -0800, The_Giant_Rat_of_Sumatra
wrote:

On Thu, 09 Feb 2012 13:12:15 +0000, Pomegranate *******
wrote:

Would you please supply some evidence of your claims?

You don't even know what a 10Gb/s optical port looks like either,
jackass.

You are truly pathetic, and a total loser.

The only response a retard like you knows is "stalk and jab".

Would you please supply some evidence of your claims?


You wouldn't know what a constellation measurement was if one bit you in
the ass, much less understand it. Nuff said.

Would you please supply some evidence of your claims?

Increasing Cable TV signal strength
 

On Fri, 10 Feb 2012 05:52:31 -0800, The_Giant_Rat_of_Sumatra
wrote:

I was system engineering director for several
military satellites systems,

And now you are a withering old **** who comes in here mouthing petty
horse**** about someone as if you know them, when you, in fact, have no
clue about anything about them. What you are doing is jumping on the
petty, immature asshole bandwagon. You are a special case type asswipe.

I tend to judge people by their willingness and abilities to learn new
things. You fail.

You may know something about CATV and fiber, but it doesn't show.
Instead of taking the time to educate those whom you suspect of being
in error, you waste our time with insults and unsubstantiated
opinions. Your command of profanity is truly impressive, but
misplaced. If someone presented you with your comments, what you
would think of the author?

I can't imagine what personal tragedy has occurred in your life, that
you find it necessary to demonstrate your competence at the expense of
others. If you're truly competent, such a crutch is not necessary. If
you clean up your act, there may be hope for you remaining.




--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

Increasing Cable TV signal strength
 

On Thu, 09 Feb 2012 20:43:14 -0800, The_Giant_Rat_of_Sumatra
wrote:

On Thu, 09 Feb 2012 20:29:01 -0600, tom wrote:

Nice to have amusing idiots back again.

Actually, asshole, folks here would like it if you would leave.

Speak for yourself, Nymbecile.

Everyone here would love to see you leave. You have polluted this and
other groups far too long.



Bad enough seeing dopes like SkyBuck here, now we have to see idiots
like you and krw as well. No, dumb****, you are not amusing, idiot.

Did ya catch the FOAD in that, boy?

Increasing Cable TV signal strength
 

Michael A. Terrell wrote:
Joerg wrote:
Michael A. Terrell wrote:
Joerg wrote:
amdx wrote:
Hi All,
I'm on a boat, about 170ft from the utility post.
Recently our cable company switched to the wonderful world of
Digital TV. I got the new digital converter and had no picture.
I took the box back and got a second box, still no picture. So now I
suspect a weak signal and confirm that it is the cable length. The cable
company came out and gave me a better cable than I had installed. At
this point I have a picture but it is intermittent. The signal at the
utility post has 3 outputs and had a four way splitter, I suggested the
cable guy put in two 2 way splitters and give me the stronger (first) tap.
That got my signal to work almost all the time. I'd like to get the
signal to work 100% of the time.
Looks like the cable guys screwed up.

In your opinion.
If their company cable box doesn't deliver a useful and reliable signal
I call that screwed up. One pays for a service and expects to either get
it delivered as promised or money back.

... If they are delivering the level called for in
their franchise, they didn't screw up. It has always been up to the
customer to pay for or provide extra equipment for non standard
installs.

Mike's install does not sound non-standard. 170ft cable drop towards
premises which is fairly normal, plus the cable company's set-top box.


Grow up. That is an excessive length drop. A standard drop is under
100 feet. You think you know everything, and that the world has to live
by your rules. You don't, and it doesn't. ...


http://www.starvision.tv/lineup_res.htm

Quote "Maximum Drop Length 300 Feet"

Now that's what I call good service.


... I'll bet you've never even
seen a CATV franchise, or the dozen of pages of specifications agreed to
by both the CATV company and the local government. The CATV company
isn't a Santa Clause machine, and local governments know why there are
limits to the service provided. If there were't, no one could afford to
build or operate a CATV system. You've never designed a headend, or a
physical plant If they build to supply higher port levels, it has to
start at the headend, and requires closer spaced trunk amplifers. The
system noise goes up from all of the cascaded amplifers, and the
equipment runs hotter, withj a very reduced service life. When you can
design an RF distribution system of more than 500 MHz bandwidth and has
over 10,000 output ports, with the gain stabilized to a couple dBmv 20
miles from the headend and over a range from sub zero F to + 100 F then
you can tell me I'm wrong.

One headend I designed and built was only off by .1 dBmv at the test
port on the first trunk amp which was a half mile from the head end. If
you can do better than that, I'll listen to you and your opinions


See above. Obviously others can. And yes, I have designed RF broadband
power amps. Lots of them. Not just lashing up boxes but the actual
transistor level circuitry including layout guidance for the nasty stuff.

Fact is, if a cable company isn't competent to do a 170ft drop they
should decline the job. Otherwise it is a screw-up, plain and simple. In
our area they'd lose their shirts to the satellite guys because there
are many houses like ours where there is no reasonable way to get from
the street to the house with a 100ft limit. We have around 200ft that's
still there from the early 90's and the previous owner said cable TV
worked just fine for them. We are not subscribed because TV ain't that
important to us.

--
Regards, Joerg

http://www.analogconsultants.com/

Increasing Cable TV SIGNAL LEVELS
 

On 2/8/2012 5:41 PM, Jeff Liebermann wrote:
On Wed, 08 Feb 2012 13:00:12 -0600, wrote:

I'm on a boat, about 170ft from the utility post.

Ok, 200ft of coax. Presumably RG6a/u.

Recently our cable company switched to the wonderful world of
Digital TV.

You have been assimilated. Resistance is futile.

I got the new digital converter and had no picture.

Something is wrong. The nominal signal from the cable drop is suppose
to be 0dBm. If there's a splitter involved, they like to crank it up
to about 10dBm. Your 200ft of RG6a/u will drop the signal from
between 4dB at the low end, to about 6dB at the high end. Your set
top box is suppose to operate with a 10dB margin. If you would kindly
disclose the maker and model, it might be possible to find the specs.
Typically, you'll have at least 10dB margin. Even with 200ft of coax,
you should have 4 to 6dB margin.



The Box is a CISCO RNG100
Only data I know how to get is;
Tuner 537.00 Mhz 2dbmv
TDC 75.25 Mhz 5dbmv
RDC 20.00 Mhz 30.0dbmv Yes 30.0

On the road, will check in this evening.
Mikek

Increasing Cable TV signal strength
 

On Thu, 09 Feb 2012 20:45:31 -0800, The_Giant_Rat_of_Sumatra
wrote:

On Thu, 09 Feb 2012 20:34:43 -0600, tom wrote:


Interesting how little you bother to learn about the people you swear
at.

Interesting how ****tards like you make presumptions about people (and
include insults), and then forget that you even did it, and act as if I
am some kind of offender against you because I called you the ****tard
you are for doing it..

You are as ****ing retarded as it gets, boy. Your mother should be
jailed.

Go on, Nymbecile, finish your favourite joke off. It's ages since we
heard it!

Increasing Cable TV signal strength
 

Pomegranate ******* wrote:
On Thu, 09 Feb 2012 20:45:31 -0800, The_Giant_Rat_of_Sumatra
wrote:

On Thu, 09 Feb 2012 20:34:43 -0600, tom wrote:

Interesting how little you bother to learn about the people you swear
at.
Interesting how ****tards like you make presumptions about people (and
include insults), and then forget that you even did it, and act as if I
am some kind of offender against you because I called you the ****tard
you are for doing it..

You are as ****ing retarded as it gets, boy. Your mother should be
jailed.

Go on, Nymbecile, finish your favourite joke off. It's ages since we
heard it!

He really needs to create a new file from which to cut and paste. Like
most comedians', his jokes get stale after awhile.

--
VWW, K6EVE

Increasing Cable TV signal strength
 

On 2/10/2012 12:18 AM, VWWall wrote:
Hellequin wrote:
On Thu, 09 Feb 2012 21:47:31 -0800, VWWall wrote:

The_Giant_Rat_of_Sumatra wrote:
On Thu, 09 Feb 2012 23:07:01 -0600, tom wrote:

Very nice. We were much more constrained on the install I mentioned
up the thread a ways. The fiber was fed at E1 speed, which probably
didn't work it very hard.

Bwuahahahahahahahahahaahha!

You are too stupid to even know how to say OC-192!

It wasn't from google, idiot. It is what I work with daily. More than
an order of magnitude more, in fact. Over 300Gb/s

Tell us more about your work. You must not be doing much, since you're
always on Usenet. Do you work the graveyard janitorial shift?

Here's another link for you, dork:

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

Oh, and did I say **** YOU, Wall boy?

Wikipedia is also handy for things you know nothing about!

What's Ku got to do with anything. I was designing and using Ku TWTAs
over twenty years ago. I was system engineering director for several
military satellites systems, including those for the UK and NATO. These
did not use Ku because of the problem with rain attenuation.

P.S. How about a reply using one of the many Linux systems you mention?


He mentioned running 400 megabuck projects. With his attitude he
wouldn't last 10 seconds in the interview for a position like that. And
if he by chance made it through he'd be gone the first day because of
performance and trouble getting along with anyone.

He does sound like someone who does do janitorial work, now that you
mention it, and is trying to compensate for his lack of success and low
IQ with insults.

Usenet. You gotta love the kooks.

tom
K0TAR

Increasing Cable TV signal strength
 

On Thu, 09 Feb 2012 17:56:35 -0500, "Michael A. Terrell"
wrote:


" wrote:

On Wed, 08 Feb 2012 18:52:10 -0800, The_Giant_Rat_of_Sumatra
wrote:

On Wed, 8 Feb 2012 18:21:19 -0800 (PST), Mark wrote:



Just a point. I may not have made it clear. I had the tech put in two
2way splitters and connect me to the first one. Hoping to gain 3db.
(or 4) and it did make a difference.

Where does the other leg of that splitter go to? And is that end
properly terminated?



Cable installers terminating things? You must be ****ing joking.
They would have to have an IQ above 25 for that.

*WAY* above your pay grade.


Makes you wonder what they paid him for at Time Warner, if he wasn't
smart enough to install a terminator.

Probably customer service.