[clug] Microwave/Wireless - DTV Overload

[dave]

hehe, I think this thread has gone off the rails a bit. I never said
anything about the microwave interfering with the digital TV...

Dave

On Fri, 2005-02-04 at 09:42 +1100, Bob Edwards wrote:
> Possibly, (of course, you meant 2.45GHz for wireless, not 1.2GHz - right?)
> 
> I would be _very_ cautious of any DTV tuner that was susceptible to
> harmonics or IF interference, though. These are easy enough artifacts to
> design against and with all the CE-style accreditation for consumer
> electronics not to emit, nor be susceptible to reasonable emissions, I
> would not think that you should see _any_ noticeble interference on your
> DTV from either 802.11, or a microwave oven.
> 
> If your microwave is interfering with your DTV, this is a sure sign that
> the microwave is _very_ sick and needs replacing  immediately.
> 
> Cheers,
> 
> Bob Edwards.
> 
> Neil Pickford wrote:
> > Although Digital TV runs at lower frequencies (174-230 MHz VHF & 520-800 
> > MHz UHF) than WiFi/Microwave (1.2 GHz) it is quite possible that the 
> > first Intermediate Frequency used by the tuner card is in the 1200 MHz 
> > area.  Thus strong local signals in this area of the spectrum will get 
> > directly into the receiver chain. It depends on the topology of the 
> > particular DTV tuner module that is in use as to how susceptible it will 
> > be to WiFi overload.
> > 
> > Bob Edwards wrote:
> > 
> >>
> >> I'd be more worried about standing in the sun on a summer day for 15 
> >> minutes
> >> than being near an 802.11 wireless device for several years.
> >>
> >> The amount of energy that a microwave is allowed to "leak" before it is
> >> considered to be faulty is significantly more than the amount of energy
> >> that a (non-modified :-) 802.11 wireless device can emit.
> >>
> >> Digital TV runs at completely different frequencies.
> >>
> >> Cheers,
> >>
> >> Bob Edwards.
> >>
> >> John Fletcher wrote:
> >>
> >>> That's probably because they both run on the same frequency.  Which 
> >>> kind of
> >>> makes non-scientists like me wonder why I am shooting these microwave
> >>> oven-like waves through my house... or the effect of shooting them 
> >>> through
> >>> our neighbourhoods.
> >>>
> >>> Fletch.
> >>>
> >>> Message: 8
> >>> Date: Wed, 02 Feb 2005 18:06:44 +1100
> >>> From: dave <davico at tpg.com.au>
> >>>
> >>>> Incidentally, my microwave is another story.
> >>>> When it's running the wlan is cactus. (Digital TV is fine though) I 
> >>>> don't stand too close that thing anymore...
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> 
>