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MK_TO Posted:
On the Vonage
Canada web site,
it states that
outbound calls
from my Vonage
home
...

In The Forum:
Vonage Canada
Topic:
Outbound Caller ID
On Mar 27, 2015 at 10:23:31

xfilesera Posted:
Customer Care
yesterday and was
told that the
conference calling
feature is being
...

In The Forum:
VoIP Feature Wish List
Topic:
Do Not Disburb
On Mar 27, 2015 at 07:05:16

hasan Posted:
...
In The Forum:
Vonage Canada
Topic:
BD||INDIA||PK DIRECT ROUTE PROVIDE
On Mar 26, 2015 at 08:17:23

RajeshCO27 Posted:
Hey, I have
built a PBX by
using the Ozeki
SDK and and want
to connect it to
my
...

In The Forum:
Vonage
Topic:
SIP trunking issue: authentication problem (CUCM & own P
On Mar 26, 2015 at 07:30:31

OPT Posted:
...
In The Forum:
Vonage
Topic:
Optima Saver Bandwidth Optimizer Service
On Mar 11, 2015 at 06:50:50

sunnyshazy Posted:
thansk for this
post . . .. . . .
_______
____ sunny
...

In The Forum:
Vonage V-Phone & SoftPhone
Topic:
Xlite 4.5 configuration
On Mar 10, 2015 at 06:46:45

miter Posted:
since Voicewing is
going bye bye (or
at least in the
process of
switching). So far
...

In The Forum:
Vonage
Topic:
Playing message wav files?
On Mar 03, 2015 at 01:55:00

Gogi22 Posted:
I don't believe
that becoming a
public company
would have a
negative effect on
...

In The Forum:
Vonage Stock
Topic:
Vonage IPO
On Feb 27, 2015 at 01:15:13

kdf55 Posted:
No. It is a 2 year
contract that you
are locked in to.
The first year is
discounted,
...

In The Forum:
The Cafeteria - Any Non Vonage Topic
Topic:
Ethical Business Billing
On Feb 26, 2015 at 11:25:40

breetlee Posted:
I am thinking
about having a
family member get
DirecTV. The
$29.99 plan looks
good,
...

In The Forum:
The Cafeteria - Any Non Vonage Topic
Topic:
Ethical Business Billing
On Feb 23, 2015 at 01:40:36


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Post new topic   Reply to topic  Vonage® VoIP Forum - Vonage News, Reviews And Discussion » The Cafeteria - Any Non Vonage Topic
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mbhn5204
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Joined: Jan 19, 2005
Posts: 492
Location: Denver, Colorado

PostPosted: Sat Feb 05, 2005 7:41 pm    Post subject: Coaxial Cable or Circular Waveguide Reply with quote Back to top

As I'm sure most of us have, I have a respectable collection of assorted cables that have piled up in a drawer over the years. I was looking for a short piece to connect two phase splitters in order to connect two TV's when I noticed that the newer cables were distinctly different from the old.

The old cables, RG75 if I remember correctly, were thinner than the new cables. They were also shielded with cheap copper braiding and had a sloppy connector. A plain old coaxial cable for sure. I had a roll of the newer cable for comparison. Thick, nonflexible and expensive connectors. The shielding proved to be something special. A solid stainless metal was wrapped around the inner insulator. It was fixed to the insulator with some sort of adhesive. The distance from the center conductor to the shielding was perfectly uniform throughout the length of cable.

I did microwave work years ago when I was a younger man. It seemed likely that what I had been examining was in fact a circular waveguide. I don't remember when Comcast had switched to this type of device. I assume the cable came in when the data rates went up. Impressive to say the least.

I think I'll be taking much better care of these cables from now on. Don't step on it, no crimps or sharp bends. I don't know enough about what goes through these cables. What are the standing wave ratios? How does a standing wave affect data rate, voltage, and rise times? Then again maybe it doesn't matter at all, or is a poor cable the root of some of the Broadband Router problems that some experience?
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kd1s
Vonage Forum Senior
Vonage Forum Senior


Joined: Jan 13, 2005
Posts: 78
Location: Providence, RI

PostPosted: Sat Feb 05, 2005 8:38 pm    Post subject: Ah, the good old days Reply with quote Back to top

While I was still active in the amateur radio field we used Belden 9913 cable. That stuff was rated for use from 144MHz to 1.2GHz or so without any serious attenuation.

Of course the gold standard was hardline. Hardline used an aluminum outer shell surrounded by polyeth or something similar. Inside was the center copper conductor supported by nylon supports every so many cm. That stuff was good for pretty much anything you throw at it with low attenuation of signal.

Many cable companies used it for their backbone before switching to fiber.
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mbhn5204
Vonage Forum Evangelist
Vonage Forum Evangelist


Joined: Jan 19, 2005
Posts: 492
Location: Denver, Colorado

PostPosted: Sun Feb 06, 2005 1:26 am    Post subject: Coaxial Cable Or Circular Waveguide Reply with quote Back to top

Ah! Amateur radio. I was once WB1AUJ. General class license. I can't remember the equipment manufacturer, it was common and a twin setup. That was over 30 years ago. Lost interest quickly. Got tired of QSL?
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