Webcam usb extension cable recommendations

[Mr.Electric]

I have been experimenting with adding cheap USB webcams to my camera network. Im running icam on a netbook. I have an active USB extension and a regular USB extension both don't work to connect to the webcam. The webcam is no longer present on my computer. Oddly a USB mouse will work through both extensions. I am thinking of trying the extension in conjunction with a powered USB hub to make sure it is not a voltage drop issue. I am also considering trying the USB over cat 5 cable set ups.  Does anyone have a combination of parts that works to instal a webcam wired about 20' from the computer?

[SKJM Support]

Generally we do not recommend connecting USB cameras via hubs or extension because they tend to degrade the signal.

For cameras located at a distance from the computer running iCamSource, we recommend WiFi Network IP cameras.

We discuss the recommended cameras on our forum here: http://skjm.com/forum/index.php?topic=908.0

[lanedava]

My local electronics store expert told me that usb signal will degrade rapidly after about 15 ft of cable (especially with video). I bought a 75 ft usb cable that has a built in signal/power booster and a 4 port usb hub and then connected my usb webcam. WORKS PERFECT. Appears to me he was correct

[Mr.Electric]

I think I could live with signal degradation if it meant fuzzy image not no image. Can you show a link to the 75 foot cord and camera that worked for you.
Thank you