[Yaesu] TV and receiver noise

Thu, 27 Jun 2002 02:27:20 -0400

John,

Is the TV connected to cable or is it **gasp** have an actual antenna ?  Is
there other 'entertainment equipment' (VCR, DVD player, cable box, audio
amps, 'Web TV', etc.) involved.

A few years ago, our 'less than well trained cable TV installers' installed
a separate ground rod to protect the cable TV coax where it enters the house
(opposite end from the AC power service.  This created a verrry long ground
loop at opposite ends of the house with RF hot spots.  Moving the cable
entrance to the same side as the power and grounding the coax to the single
house ground solved most of the problems for me.  Adding some common mode
chokes (the ones that either encircle the cable or you wind the cable
through) fixed the rest.

You might want to try cabling around as much TV/entertainment associated
gear (VCR, DVD player, cable control box, etc) in order to further isolate
the source.

Most problems like this that I've been involved in where resolved with
proper grounding and the use of common-mode chokes on all the entertainment
center cables (coax, power, speakers, VCR, and all the interconnecting
audio/video wires).

ARRL's seemingly classic RFI problem solving methods (from their 'Operating
Manual') are inexpensive to do.  In addition, Palomar Engineering has a good
RFI problem solving document that they are happy to mail out (free!):
http://www.palomar-engineers.com/
They're also happy to sell you their rfi problem solving kits (actually they
are reasonably priced).

73
Frank

 ._._.
----- Original Message -----
From: "John Geiger" <[email protected]>
To: <[email protected]>; <[email protected]>;
<[email protected]>; <[email protected]>
Sent: Wednesday, June 26, 2002 9:55 PM
Subject: [Yaesu] TV and receiver noise

> Here is a problem that I have not seen discussed
> before.  In our living room we have a GE 27 inch,
> picture in picture TV.  When it is turned on, the
> noise level on 30 thru 12 meters jumps to S5 to S6.
> No other TV in the house produces noise on the
> receiver, and it doesnt seem to affect 10 meters or
> above.  The TV is probably 20 feet from the rig in a
> straight line, but that is going thru a couple of
> walls.
>
> Any ideas as to what I can do to eliminate this noise?
>  I supposed calling GE might be a first step, but I
> have visions of them not having a clue.  I am sure
> that someone else has had this problem and fixed it.
> Believe me, selling the TV and getting another has
> seriously crossed my mind.  I just wish that I could
> take any TV I want to buy for a "test drive" to see if
> it produces the same results.
>
> 73s John NE0P
>
> __________________________________________________
> Do You Yahoo!?
> Yahoo! - Official partner of 2002 FIFA World Cup
> http://fifaworldcup.yahoo.com
> Moderator: Ray Brown, KB0STN
> _______________________________________________
> Yaesu mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/yaesu
>