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-   -   Low volt question (RG-6 cable & shorts) (http://www.diychatroom.com/f18/low-volt-question-rg-6-cable-shorts-99144/)

Alan 03-21-2011 10:27 PM

Low volt question (RG-6 cable & shorts)
 
I was at the hardware store looking for a pocket toner to figure out this mess of dish network cables running everywhere in the new house so I can hook my TV and modem to one of them inside the house, and tell the cable guy which one to connect to the box outside of the house.

This guy from the phone company tells me I should just 'short' the end using a barrel connector and then use a regular multi-meter on the other end to find it.

How do I go about accomplishing shorting an RG-6 cable? :huh:

jlmran 03-21-2011 10:37 PM

I would simply cut off the connector, strip it, connect the inner conductor to the shielding, then test for continuity. Place new connector on the end when finished.

PaliBob 03-21-2011 11:03 PM

1 Attachment(s)
Here is a neat Tester from Amazon.com
.

nap 03-22-2011 12:56 AM

Quote:

Originally Posted by Alan (Post 614339)

How do I go about accomplishing shorting an RG-6 cable? :huh:

with one of these:

http://www.amazon.com/Type-75-Ohm-Te...bxgy_hi_text_c

. You will have to also get a female to female coupling (external threads on both ends). Screw into the F connector on the cable and screw the terminator on the other end of the coupling.

vsheetz 03-22-2011 01:11 AM

  • make a jumper from a short piece of wire and two alligator clips - clip to center conductor and shield at one end to short, check with ohm meter or continuety tester at other end
  • buy jumper as above from Radio Shack or elsewhere
  • use a barrel connector, wrap or solder a wire to short one end
  • use a couple paper clips as jumper...
lots of quick and inexpensive ways to short one end of the cable...

mpoulton 03-22-2011 04:43 AM

If it already has an F connector on it, you can usually bend the inner conductor against the connector shell, sticking the tip against the threads to make it stay.

PaliBob 03-22-2011 06:30 AM

1 Attachment(s)
Here is the Coax Coupler

Amazon says they have 8 in stock. Let's see that should come to 8
And that's for what Amazon calls the Premium model.
.

Alan 03-22-2011 10:50 PM

Quote:

Originally Posted by nap (Post 614383)
with one of these:

http://www.amazon.com/Type-75-Ohm-Te...bxgy_hi_text_c

. You will have to also get a female to female coupling (external threads on both ends). Screw into the F connector on the cable and screw the terminator on the other end of the coupling.

I didn't know that would short it. Good call. Cheap radio shack device.

:thumbup::thumbup::thumbup:Thanks :)

nap 03-22-2011 11:02 PM

Quote:

Originally Posted by Alan (Post 615026)
I didn't know that would short it. Good call. Cheap radio shack device.

:thumbup::thumbup::thumbup:Thanks :)

that's a termination resistor. It should allow a read through of the characteristic impedance which is 75 ohm for rg6

Alan 03-23-2011 10:19 PM

Quote:

Originally Posted by nap (Post 615036)
that's a termination resistor. It should allow a read through of the characteristic impedance which is 75 ohm for rg6

so when I check the other end I should place the test leads 1 on the center conductor and one on the outside of the fitting and I should read 75 ohms, right? :huh:

jlmran 03-23-2011 10:21 PM

Quote:

Originally Posted by Alan

so when I check the other end I should place the test leads 1 on the center conductor and one on the outside of the fitting and I should read 75 ohms, right? :huh:

Or check for continuity. Uses a tone (beep) on a digital meter.

What kind of meter do you have?

Alan 03-23-2011 11:56 PM

Quote:

Originally Posted by jlmran (Post 615755)
Or check for continuity. Uses a tone (beep) on a digital meter.

What kind of meter do you have?

I've got a craftsman digital, and it has both functions, so I should be o.k. either way.

Thanks all.

:thumbup:


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