[Yaesu] TV and receiver noise

2002年6月29日 06:52:47 +0200

Hi John
We should move this discussion to the TVI/RFI/EMI reflector at Qth.net, but
here is my last comment.
Of course device non-compliance is not the only source of TV interference.
A local Ham has almost total wipe-out on MF/HF. He spent months checking
his installation and experimenting with improved earth systems and still the
interference continues unabated. Eventually, he called in our
FCC-equivalent and the problem was traced to a faulty switched-mode power
supply in his neighbour's television receiver. The authorities then
instructed the television owner to have his set repaired as required by the
EMI regulations.
Now the twist in the tail.
The neighbour handed his case over to his lawyer and it was promptly
established that there is no specific legislation in place to control EMI
issues around power supply units. Legislation only dictates that a
television receiver must comply with EMI standards and a PSU must comply
with the relevant safety standards. The lawyer argued that his client's TV
set complies with EMI standards and there is no evidence that the PSU is not
operating safely. EMI from the PSU is not covered in any regulation and his
client cannot be held responsible for that problem.
The sad part is that the neighbour never uses the offending TV set. He
bought a new TV and leaves the old set switched on in standby mode all the
time.
The problem arose when our FCC-equivalent separated the issue and specified
that the PSU is faulty, not the TV set.
This poor Ham has been living with this problem for about three years and is
ready to give up Ham Radio. The neighbour can easily end the interference
by switching the old TV off, but it seems that he has a problem with the
Ham's tower.
Loacal legislation is being passed to control EMI from PSUs, but that has
been in the pipeline for two years.
Perhaps you have a problem with your television receiver.
Regards
Deon ZR1DQ
.
----- Original Message -----
From: Deon Erwin <[email protected]>
To: John Geiger <[email protected]>; Reflector Yaesu
<[email protected]>
Sent: Friday, June 28, 2002 12:07 AM
Subject: Re: [Yaesu] TV and receiver noise
| Hi John
|| All television sets sold in your country must comply with the relevant
| interference regulations, as promulgated by the FCC, and should not cause
| any interference.
|| I would address a letter to senior management of GE and bring it to their
| attention that their product is violating the FCC interference regulations
| and request them to rectify the matter. It will strengthen your case if
you
| could establish references to these FCC regulations.
|| I always manage to solve my problems by referring them to senior
management
| of a company.
|| Good luck.
| Deon ZR1DQ
| .
| ----- Original Message -----
| From: John Geiger <[email protected]>
| To: <[email protected]>; <[email protected]>;
| <[email protected]>; <[email protected]>
| Sent: Thursday, June 27, 2002 3:55 AM
| 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
| |
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