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From: LT on 17 Jan 2006 15:39
Besides 2.4 ghz phones and microwave ovens, what else interferse with a
wireless router? Wireless keyboards and/or mice? Wireless headphones?
Bluetooth devices?
Thanks
LT


From: Thomas Krüger on 17 Jan 2006 17:46
LT wrote:
> Besides 2.4 ghz phones and microwave ovens, what else interferse with a
> wireless router?
> Wireless keyboards and/or mice?
yes*

> Wireless headphones?
yes*

> Bluetooth devices?
big yes

Thomas


*if working in the 2.4GHz area.
From: Jeff Liebermann on 17 Jan 2006 21:34
"LT" <lorentheodore(a)hotmail.com> hath wroth:

>Besides 2.4 ghz phones and microwave ovens, what else interferse with a
>wireless router?

The definition if interference is usually "anything exept my radios".

>Wireless keyboards and/or mice? Wireless headphones?
>Bluetooth devices?

1. Other 802.11b/g wireless devices and hot spots.
2. 2.4GHz cordless phones (various modulation types).
3. High speed point to point links that use proprietary protocols.
4. Microwave ovens.
5. RF excited sulfur lamps by Fusion Lighting (defunct).
| http://www.lrc.rpi.edu/programs/Futures/LF-Electrodeless/index.asp
6. Wireless video extensions for security cameras and X10 systems.
7. Wireless mouse and keyboard (mostly using Wireless USB from
Cypress semiconductor).
| http://www.cypress.com/portal/server.pt?space=CommunityPage&control=S...
8. Bluetooth
9. Zigbee
10. Microwave fruit dryers, plastics preheaters, and moisture
removers.
11. ISM (Industrial, scientific, medical) devices used in
research.
12. Low speed 2.4GHz data links. For example:
| http://www.freewave.com/fgr24series.html
13. WiMax on 2.4 and 5.6GHz. (Clearwire, NextNet)
14. Karlnet protocol based WISP (wireless internet service provider).
15. Ham radio.
16. VoIP 2.4GHz Wi-Fi phones.
17. 2.4GHz vehicle navigation systems.
18. Service distribution from some fiber to the pole providers.
19. Wi-fi connected games.
| http://www.nintendo.com/wifi
20. Digital camera wireless picture transfers.
21. Buses and trains that operated moving wireless hot spots.


--
Jeff Liebermann jeffl(a)comix.santa-cruz.ca.us
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
From: LT on 18 Jan 2006 00:26
Yikes, thanks for the list Jeff, as usual your contribution to this NG is
extreme and most helpful. Couple of questions....
- How can I tell if a keyboard/mouse uses the Cypress semi? I'm looking
into a Logitech KB/ laser mouse combo.
- I'm buying 900mHz wireless headphones, they're OK right?
Thanks
LT


"Jeff Liebermann" <jeffl(a)comix.santa-cruz.ca.us> wrote in message
news:tr9rs15brahnpj5fnudimorc4u7sbl7pnh(a)4ax.com...
> "LT" <lorentheodore(a)hotmail.com> hath wroth:
>
>>Besides 2.4 ghz phones and microwave ovens, what else interferse with a
>>wireless router?
>
> The definition if interference is usually "anything exept my radios".
>
>>Wireless keyboards and/or mice? Wireless headphones?
>>Bluetooth devices?
>
> 1. Other 802.11b/g wireless devices and hot spots.
> 2. 2.4GHz cordless phones (various modulation types).
> 3. High speed point to point links that use proprietary protocols.
> 4. Microwave ovens.
> 5. RF excited sulfur lamps by Fusion Lighting (defunct).
> | http://www.lrc.rpi.edu/programs/Futures/LF-Electrodeless/index.asp
> 6. Wireless video extensions for security cameras and X10 systems.
> 7. Wireless mouse and keyboard (mostly using Wireless USB from
> Cypress semiconductor).
> |
> http://www.cypress.com/portal/server.pt?space=CommunityPage&control=S...
> 8. Bluetooth
> 9. Zigbee
> 10. Microwave fruit dryers, plastics preheaters, and moisture
> removers.
> 11. ISM (Industrial, scientific, medical) devices used in
> research.
> 12. Low speed 2.4GHz data links. For example:
> | http://www.freewave.com/fgr24series.html
> 13. WiMax on 2.4 and 5.6GHz. (Clearwire, NextNet)
> 14. Karlnet protocol based WISP (wireless internet service provider).
> 15. Ham radio.
> 16. VoIP 2.4GHz Wi-Fi phones.
> 17. 2.4GHz vehicle navigation systems.
> 18. Service distribution from some fiber to the pole providers.
> 19. Wi-fi connected games.
> | http://www.nintendo.com/wifi
> 20. Digital camera wireless picture transfers.
> 21. Buses and trains that operated moving wireless hot spots.
>
>
> --
> Jeff Liebermann jeffl(a)comix.santa-cruz.ca.us
> 150 Felker St #D http://www.LearnByDestroying.com
> Santa Cruz CA 95060 http://802.11junk.com
> Skype: JeffLiebermann AE6KS 831-336-2558


From: Jeff Liebermann on 18 Jan 2006 02:02
"LT" <lorentheodore(a)hotmail.com> hath wroth:

>- How can I tell if a keyboard/mouse uses the Cypress semi? I'm looking
>into a Logitech KB/ laser mouse combo.

The driver will have "Cypress Wireless USB" listed in the device list.
The chips will look something like this:

http://802.11junk.com/jeffl/pics/wireless/Wi-Spy/slides/Wi-Spy-01.html
and will have CYxxxxx as the part numbers. If you can get the FCC ID
number off the device, you can look it up on the FCCID database and
check the inside photos.

However, I wouldn't worry (much) about interference from WirelessUSB
devices (i.e. mice and keyboards). The AFH algorith used in Bluetooth
1.2 and 2.0 is also used for Wireless USB. See the description at:

http://www.mwee.com/features/showArticle.jhtml?articleID=163700631&pgno=2
Wireless USB listens before selecting a channel and moves if it hears
garbage from 802.11 or Bluetooth.

>- I'm buying 900mHz wireless headphones, they're OK right?

Yep. No interference to 2.4GHz.

--
Jeff Liebermann jeffl(a)comix.santa-cruz.ca.us
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
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