[clug] Microwave/Wireless - DTV Overload
neilp at goldweb.com.au
Thu Feb 3 22:08:49 GMT 2005
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
> 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.
> 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
>> our neighbourhoods.
>> 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...
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