Disconnecting Antenna From Sony Head Unit

[Cartrivision1]

Hi, I posted here last week regarding a problem I was having with
noise on the shortwave bands on my Sony XR-C610 head unit. I bought a
noise filter from Scosche that goes between the radio and antenna. If
it will work is another matter, but I assumed wrongly that it
installed at the antenna end. I was wrong as it is supposed to
install at the radio end. Anyway I pull the head unit out to install
this thing and what I assume to be the antenna lead is snaked all the
way back behind a bunch of other wiring and I do not want to yank
things out in fear I will break some connections.

The lead seems to be very long, over 6 inches and I was looking at the
instructions for the filter and it says that the thing should plug in
RIGHT into the head unit, but then the diagram on the packaging shows
it plugging into the antenna lead itself. How long is the typical
Sony antenna lead usually? Any tips for a novice on doing this
without doing any damage?


thanks,
CTV

[MOSFET]

As you can see, our precious newsgroup has been invaded by a marauding band
of Sporgers. It makes posting or communicating VERY difficult.

It sounds like you may have the right item to stop the noise from your SW
radio. All I can say is give it a try and see if it works. As far as
length of Sony antenna's, I'm not sure what you mean by that. They are as
long as they are, I guess (see, I don't know what you mean).

Anyway, good luck. I hope the noise goes away.

MOSFET

"Cartrivision1" > wrote in message
ups.com...
> Hi, I posted here last week regarding a problem I was having with
> noise on the shortwave bands on my Sony XR-C610 head unit. I bought a
> noise filter from Scosche that goes between the radio and antenna. If
> it will work is another matter, but I assumed wrongly that it
> installed at the antenna end. I was wrong as it is supposed to
> install at the radio end. Anyway I pull the head unit out to install
> this thing and what I assume to be the antenna lead is snaked all the
> way back behind a bunch of other wiring and I do not want to yank
> things out in fear I will break some connections.
>
> The lead seems to be very long, over 6 inches and I was looking at the
> instructions for the filter and it says that the thing should plug in
> RIGHT into the head unit, but then the diagram on the packaging shows
> it plugging into the antenna lead itself. How long is the typical
> Sony antenna lead usually? Any tips for a novice on doing this
> without doing any damage?
>
>
> thanks,
> CTV
>
>

[arthur[_3_]]

Is it tunable? My guess is that it goes in series with the Motorola
radio cable. An attempt at picture:

HU > filter > antenna lead > antenna. There are different styles of
antenna cable connectors. There is a conversion male to female if you
must make connect disimilar connectors.

The antenna cable is as long as it must be to connect the antenna to
the radio. The antenna should be about 25% of the wave length in
meters. This will be a "1/4 wave" antenna. The nominal antenna
length in inches is (300 / frequency in megahertz) x .25 x 39. It is
not likely you will want such a long vertical for the short wave
bands.

You really should try to identify the source of the noise. Do you
hear a whining noise that changes pitch as the engine speed changes?
alternator noise. Do you hear clicking noise that speeds up or slows
down with the engine speed? Ignition noise. Try the A/C too.

An all band radio is not efficient because it must be made to cover
too much radio spectrum so do not expect too much from it. It is an
example of compromising compromises.



On Sun, 12 Aug 2007 11:16:16 -0700, Cartrivision1 >
wrote:
>
>The lead seems to be very long, over 6 inches and I was looking at the
>instructions for the filter and it says that the thing should plug in
>RIGHT into the head unit, but then the diagram on the packaging shows
>it plugging into the antenna lead itself. How long is the typical
>Sony antenna lead usually? Any tips for a novice on doing this
>without doing any damage?
>
>thanks,
>CTV