Wireless Networking I can hear my Wifi card on my TV!

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Subject Author Date
I can hear my Wifi card on my TV! fishman 01-21-05
Posted by fishman on January 21, 2005, 1:47 pm
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As the subject really. It sounds like the interference from a mobile phone
but with longer pulses.



Posted by on January 21, 2005, 12:02 pm
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>It sounds like the interference from a mobile phone
>but with longer pulses.

Move the AP/client further from the TV/antenna, change the WiFi
channel, or get a TV that's not so susceptable...



Posted by bumtracks on January 21, 2005, 5:56 pm
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> As the subject really. It sounds like the interference from a mobile phone
> but with longer pulses.
>
I can hear my TV on my wifi, and see it too ;)

might try plugging your ap into different 120v outlets, maybe if its not on
the same circuit the noise will go away.




Posted by Jeff Liebermann on January 22, 2005, 4:11 am
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wrote:

>As the subject really.

Swell. I have to reconfigure my news reader to display the subject so
I can figure out what you're talking about. Instead of reminding me
to read the subject line in the body of the message, it's so much
easier to just repeat the subject (in greater detail) in the body of
the message.

>It sounds like the interference from a mobile phone
>but with longer pulses.

The TDMA/GSM/IDEN RF pulses from a cell phone are somewhat similar to
the beacon broadcasts from a wireless access point. They have a
different repetition rate, but they all generally sound the same.
Your TV is rectifying some of the RF. Since you didn't mention
anything about the TV picture, I'll assume that it's an audio only
phenomenon. It's probably the audio circuitry in the TV that's doing
the rectification. You could just move the access point away from the
TV and eliminate the problem. Or, you could find the point of entry
and apply some shielding or RF blocking ferrite beads. It could be
coming in via some of the audio amplifier phone cables, especially if
the TV has a high gain phono (turntable) input.


--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831.336.2558 voice http://www.LearnByDestroying.com
# jeffl@comix.santa-cruz.ca.us
# jeffl@cruzio.com AE6KS


Posted by fishman on January 24, 2005, 6:50 pm
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> Swell. I have to reconfigure my news reader to display the subject so
> I can figure out what you're talking about. Instead of reminding me
> to read the subject line in the body of the message, it's so much
> easier to just repeat the subject (in greater detail) in the body of
> the message.

Thanks for going to the effort of that so you can reply! I think your
newsreader software is a bit ropey, if you can't find out what the subject
of a message is.

-snip informative reply-

Thanks, I understand now. I can't seem to recreate the problem again, so
perhaps it was to do with the atmospherics on the day I first experienced
it.

> # Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
> # 831.336.2558

I don't know of many people who put their direct contact details on usenet.



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