[mythtv-users] Which antenna is attached to this wire?

[Robert M. Riches Jr.]

> Date: Sun, 1 Jan 2012 18:31:08 +1300
> From: Nick Rout <nick.rout at gmail.com>
> To: Discussion about MythTV <mythtv-users at mythtv.org>
>
> On Sun, Jan 1, 2012 at 3:59 PM, Richard Morton
> <richard.e.morton at gmail.com> wrote:
> > Satellite is usually a screw fitting and terrestrial a push fit... But I
> > expect you knew that already.
>
> These are all screw F-type connectors so no clues there (and I have
> found it very dependent on the installer as to what connector they
> use.
>
> > Alternatively you can use a tool which puts a
> > frequency down the cable you can detect with the other half of the tool.
> > Finally disconnect from auroral l aerial and connect the infer cable to the
> > outer cable temporarily and use a multimeter on a resistance setting to see
> > which off them is shorted.
> > R
> >
>
> I think I have it sussed from a peek at roof level, didn't need to get
> right up there, just sighted where the cables disappeared into the
> house and deduced from there. I'll test it out with some real gear
> tomorrow.


If the cables can all be disconnected from their equipment, a
quick way to check cable routing is to make up a simple jig.  For
one end, connect a 9V battery, maybe a current-limiting resistor
if you're not sure all equipment is disconnected, and the cable
connector in series.  For the other end, connect a piezo buzzer.
Make sure the polarity is right so that the buzzer will sound.
Use push-on connectors if possible.

When I built a house with 26 runs of coax to a central panel,
that's how I mapped out what went where.  The professional
installer was right that it's faster to just pull the cables
without bothering to keep track of what went where, and map them
out later.  He was right.  It was a piece of cake to map them
out.

HTH

Robert